Diagnosis Item
1: Diagnose shorts in the power supply to CAN bus line.
| caution |
When servicing a CAN bus line, earth yourself by touching a metal
object such as an unpainted water pipe. If you fail to do, a component connected to the CAN
bus line may be broken.
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FUNCTION
TROUBLE JUDGEMENT CONDITIONS
TROUBLESHOOTING HINTS
- Malfunction of the wiring harness
- Short to power supply of the connector
- Malfunction of each ECU
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STEP 1. Check the CAN bus lines. Voltage measurement at D-127
diagnosis connector.
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| caution |
A digital multimeter should be used. For details refer to  .
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| caution |
The test wiring harness should be used. For details refer
to .
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| note |
This inspection allows you to check that there is a short to power supply in either CAN_H
line or CAN_L line. Thus, in the following steps, check the CAN bus line that is defective.
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(1)Disconnect resistor connector D-42 <vehicles without ASTC>
or
ASTC-ECU connector D-223 <vehicles with ASTC>
and combination meter connector
D-04, and measure the voltage at the harness side of diagnosis connector D-127.
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(2)Connect the negative battery terminal, and turn the ignition switch to the ON position.
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(3)Voltage between D-127 diagnosis connector terminal No.6 (CAN_H) and body
earth
OK: 4.0 V or less
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(4)Voltage between D-127 diagnosis connector terminal No.14 (CAN_L) and body
earth
OK: 4.0 V or less
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(5)Disconnect the negative battery terminal.
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Q.
Is the check result normal?
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 <Both of the measurement results show 4.0 V or less>
Go to Step
28.
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 <Either of CAN_H line or CAN_L line the measurement
results shows 4.0 V or more>
Go to Step 2.
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STEP 2. Check the CAN line. Voltage measurement at D-230 intermediate
connector.
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| caution |
A digital multimeter should be used. For details refer to .
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| caution |
The test wiring harness should be used. For details refer
to .
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(1)Disconnect the intermediate connector, and measure at its female-side intermediate
connector (at the control wiring harness side).
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(2)Connect the negative battery terminal, and turn the ignition switch to the ON position.
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(3)Voltage between D-230 intermediate connector terminal No.13 (CAN_H) and
body earth
OK: 4.0 V or less
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(4)Voltage between D-230 intermediate connector terminal No.12 (CAN_L) and
body earth
OK: 4.0 V or less
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(5)Disconnect the negative battery terminal.
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Q.
Is the check result normal?
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<4.0 V or less>
Go to Step 15.
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<More than 4.0 V>
Go to Step 3.
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STEP 3. Check the CAN line between joint connector (CAN2) and the
resistor <vehicles without ASTC>
or ASTC-ECU <vehicles with ASTC>.
Voltage measurement at D-22 joint connector (CAN2).
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| caution |
A digital multimeter should be used. For details refer to .
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| caution |
The test wiring harness should be used. For details refer
to .
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(1)Disconnect joint connector (CAN2), and measure at the wiring harness side.
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(2)Connect the negative battery terminal, and turn the ignition switch to the ON position.
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(3)Voltage between D-22 joint connector (CAN2) terminal No.6 (CAN_H) and
body earth <3000, 3800>
OK: 4.0 V or less
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(4)Voltage between D-22 joint connector (CAN2) terminal No.11 (CAN_L) and
body earth <3000, 3800>
OK: 4.0 V or less
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(5)Voltage between D-22 joint connector (CAN2) terminal No.1 (CAN_H) and
body earth <3200>
OK: 4.0 V or less
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(6)Voltage between D-22 joint connector (CAN2) terminal No.12 (CAN_L) and
body earth <3200>
OK: 4.0 V or less
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(7)Disconnect the negative battery terminal.
| caution |
Strictly observe the specified wiring harness repair procedure.
For details refer to .
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Q.
Is the check result normal?
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YES <Vehicles with ASTC> : <4.0 V or less>
Go to Step 4.
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YES <Vehicles without ASTC> : <4.0 V or less>
Go to Step 6.
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NO (the check result is not normal.) : <More than 4.0 V>
Repair the wiring harness between joint connector (CAN2)
and the resistor connector <vehicle without ASTC>
or ASTC-ECU connector <vehicles
with ASTC>.
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STEP 4. Check the CAN line between joint connector (CAN2) and the
G and yaw rate sensor. Voltage measurement at D-22 joint connector (CAN2).
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| caution |
A digital multimeter should be used. For details refer to .
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| caution |
The test wiring harness should be used. For details refer
to .
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(1)Disconnect joint connector (CAN2), and measure at the wiring harness side.
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(2)Connect the negative battery terminal, and turn the ignition switch to the ON position.
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(3)Voltage between D-22 joint connector (CAN2) terminal No.1 (CAN_H) and
body earth <3000, 3800>
OK: 4.0 V or less
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(4)Voltage between D-22 joint connector (CAN2) terminal No.4 (CAN_L) and
body earth <3000, 3800>
OK: 4.0 V or less
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(5)Voltage between D-22 joint connector (CAN2) terminal No.2 (CAN_H) and
body earth <3200>
OK: 4.0 V or less
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(6)Voltage between D-22 joint connector (CAN2) terminal No.13 (CAN_L) and
body earth <3200>
OK: 4.0 V or less
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(7)Disconnect the negative battery terminal.
| caution |
Strictly observe the specified wiring harness repair procedure.
For details refer to .
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Q.
Is the check result normal?
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<4.0 V or less>
Go to Step 6.
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<More than 4.0 V>
Go to Step 5.
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STEP 5. M.U.T.-III CAN bus diagnostics [G and yaw rate sensor
connector disconnected]
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(1)Disconnect G and yaw rate sensor connector D-18, and diagnose by using the M.U.T.-III.
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(2)Diagnose CAN bus lines, and check if M.U.T.-III screen is as shown in the illustration.
Q.
Does M.U.T.-III screen correspond to the illustration?
Check the intermediate connector (D-225), and repair if necessary. If the intermediate
connector is in good condition, repair the wiring harness between joint connector (CAN2) and
the G and yaw rate sensor connector.
Check the G and yaw rate sensor connector, and repair if necessary. If the G and
yaw rate sensor connector is in good condition, repair the G and yaw rate sensor power supply
circuit. Refer to GROUP 35C, Diagnosis code procedures .
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STEP 6. Check the CAN line between joint connector (CAN2) and the
engine-A/T-ECU <3000-A/T, 3800>
or engine-ECU <3000-M/T, 3200>.
Voltage measurement at D-22 joint connector (CAN2).
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| caution |
A digital multimeter should be used. For details refer to .
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| caution |
The test wiring harness should be used. For details refer
to .
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(1)Disconnect joint connector (CAN2), and measure at the wiring harness side.
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(2)Connect the negative battery terminal, and turn the ignition switch to the ON position.
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(3)Voltage between D-22 joint connector (CAN2) terminal No.7 (CAN_H) and
body earth <3000, 3800>
OK: 4.0 V or less
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(4)Voltage between D-22 joint connector (CAN2) terminal No.12 (CAN_L) and
body earth <3000, 3800>
OK: 4.0 V or less
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(5)Voltage between D-22 joint connector (CAN2) terminal No.5 (CAN_H) and
body earth <3200>
OK: 4.0 V or less
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(6)Voltage between D-22 joint connector (CAN2) terminal No.16 (CAN_L) and
body earth <3200>
OK: 4.0 V or less
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(7)Disconnect the negative battery terminal.
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Q.
Is the check result normal?
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YES <3200-A/T> : <4.0 V or less>
Go to Step 9.
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YES <except 3200-A/T> : <4.0 V or less>
Go to Step 11.
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NO : <More than 4.0 V>
Go to Step 7.
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STEP 7. M.U.T.-III CAN bus diagnostics [engine-A/T-ECU <3000-A/T,
3800>
or engine-ECU <3000-M/T, 3200>
disconnected]
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(1)Disconnect engine-A/T-ECU connector D-216 <3000-A/T, 3800>
or
engine-ECU connector D-245 <3000-M/T>
or D-215 <3200>, and
diagnose by using the M.U.T.-III.
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(2)Diagnose CAN bus lines, and check if M.U.T.-III screen is as shown in the illustration.
Q.
Does M.U.T.-III screen correspond to the illustration?
Repair the wiring harness between joint connector (CAN2) and engine-A/T-ECU connector <3000-A/T, 3800>
or
engine-ECU connector <3000-M/T, 3200>.
Check engine-A/T-ECU connector <3000-A/T, 3800>
or engine-ECU
connector <3000-M/T, 3200>, and repair if necessary. If engine-A/T-ECU connector <3000-A/T,
3800>
or engine-ECU connector <3000-M/T, 3200>
is in good condition,
go to Step 8.
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STEP 8. M.U.T.-III CAN bus diagnostics (retest the system)
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Diagnose CAN bus lines, and check if M.U.T.-III screen shows normal state.
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Q.
Is the check result normal?
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The trouble can be an intermittent malfunction (Refer to GROUP 00 -
How
to use Troubleshooting/inspection Service Points -
How to Cope with Intermittent
Malfunction ).
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Replace the engine-A/T-ECU <3000-A/T, 3800>
or engine-ECU <3000-M/T,
3200>.
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STEP 9. Check the CAN line between joint connector (CAN2) and the
A/T-ECU. Voltage measurement at D-22 joint connector (CAN2).
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| caution |
A digital multimeter should be used. For details refer to .
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| caution |
The test wiring harness should be used. For details refer
to .
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(1)Disconnect joint connector (CAN2), and measure at the wiring harness side.
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(2)Connect the negative battery terminal, and turn the ignition switch to the ON position.
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(3)Voltage between D-22 joint connector (CAN2) terminal No.4 (CAN_H) and
body earth
OK: 4.0 V or less
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(4)Voltage between D-22 joint connector (CAN2) terminal No.15 (CAN_L) and
body earth
OK: 4.0 V or less
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(5)Disconnect the negative battery terminal.
| caution |
Strictly observe the specified wiring harness repair procedure.
For details refer to .
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Q.
Is the check result normal?
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<4.0 V or less>
Go to Step 11.
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<More than 4.0 V>
Go to Step 10.
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STEP 10. M.U.T.-III CAN bus diagnostics [A/T-ECU connector
disconnected]
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(1)Disconnect A/T-ECU connector D-140, and diagnose by using the M.U.T.-III.
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(2)Diagnose CAN bus lines, and check if M.U.T.-III screen is as shown in the illustration.
Q.
Does M.U.T.-III screen correspond to the illustration?
Repair the wiring harness between joint connector (CAN2) and A/T-ECU connector
.
Check the A/T-ECU connector, and repair if necessary. If the A/T-ECU connector
is in good condition, repair the A/T-ECU power supply circuit. Refer to GROUP 23A, Symptom procedures .
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STEP 11. Check the CAN line between joint connector (CAN2) and the
SRS-ECU. Voltage measurement at D-22 joint connector (CAN2).
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| caution |
A digital multimeter should be used. For details refer to .
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| caution |
The test wiring harness should be used. For details refer
to .
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(1)Disconnect joint connector (CAN2), and measure at the wiring harness side.
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(2)Connect the negative battery terminal, and turn the ignition switch to the ON position.
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(3)Voltage between D-22 joint connector (CAN2) terminal No.3 (CAN_H) and
body earth <3000, 3200, 3800>
OK: 4.0 V or less
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(4)Voltage between D-22 joint connector (CAN2) terminal No.9 (CAN_L) and
body earth <3000, 3800>
OK: 4.0 V or less
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(5)Voltage between D-22 joint connector (CAN2) terminal No.14 (CAN_L) and
body earth <3200>
OK: 4.0 V or less
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(6)Disconnect the negative battery terminal.
| caution |
Strictly observe the specified wiring harness repair procedure.
For details refer to .
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Q.
Is the check result normal?
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<4.0 V or less>
Go to Step 13.
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<More than 4.0 V>
Go to Step 12.
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STEP 12. M.U.T.-III CAN bus diagnostics [SRS-ECU connector
disconnected]
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(1)Disconnect SRS-ECU connector D-24, and diagnose by using the M.U.T.-III.
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(2)Diagnose CAN bus lines, and check if M.U.T.-III screen is as shown in the illustration.
Q.
Does M.U.T.-III screen correspond to the illustration?
Check the intermediate connector (D-231), and repair if necessary. If the intermediate
connector is in good condition, repair the wiring harness between joint connector (CAN2) and
the SRS-ECU connector.
Check the SRS-ECU connector, and repair if necessary. If the SRS-ECU connector
is in good condition, repair the SRS-ECU power supply circuit. Refer to GROUP 52B, Symptom procedures .
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STEP 13. Check the CAN line between joint connector (CAN2) and the
transfer-ECU. Voltage measurement at D-22 joint connector (CAN2).
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| caution |
A digital multimeter should be used. For details refer to .
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| caution |
The test wiring harness should be used. For details refer
to .
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(1)Disconnect joint connector (CAN2), and measure at the wiring harness side.
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(2)Connect the negative battery terminal, and turn the ignition switch to the ON position.
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(3)Voltage between D-22 joint connector (CAN2) terminal No.8 (CAN_H) and
body earth <3000, 3800>
OK: 4.0 V or less
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(4)Voltage between D-22 joint connector (CAN2) terminal No.10 (CAN_L) and
body earth <3000, 3800>
OK: 4.0 V or less
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(5)Voltage between D-22 joint connector (CAN2) terminal No.6 (CAN_L) and
body earth <3200>
OK: 4.0 V or less
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(6)Voltage between D-22 joint connector (CAN2) terminal No.17 (CAN_L) and
body earth <3200>
OK: 4.0 V or less
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(7)Disconnect the negative battery terminal.
| caution |
Strictly observe the specified wiring harness repair procedure.
For details refer to .
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Q.
Is the check result normal?
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<4.0 V or less>
Repair intermediate connector (D-230), or the
wiring harness between joint connector (CAN2) and the intermediate connector (D-230).
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<More than 4.0 V>
Go to Step 14.
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STEP 14. M.U.T.-III CAN bus diagnostics [transfer-ECU connector
disconnected]
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(1)Disconnect transfer-ECU connector D-124, and diagnose by using the M.U.T.-III.
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(2)Diagnose CAN bus lines, and check if M.U.T.-III screen is as shown in the illustration.
Q.
Does M.U.T.-III screen correspond to the illustration?
Check the intermediate connector (D-224), and repair if necessary. If the intermediate
connector is in good condition, repair the wiring harness between joint connector (CAN2) and
the transfer-ECU connector.
Check the transfer-ECU connector, and repair if necessary. If the transfer-ECU
connector is in good condition, repair the transfer-ECU power supply circuit. Refer to GROUP
22A, Symptom procedures .
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STEP 15. Check the CAN line between joint connector (CAN1) and the
combination meter. Voltage measurement at D-03 joint connector (CAN1).
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| caution |
A digital multimeter should be used. For details refer to .
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| caution |
The test wiring harness should be used. For details refer
to .
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(1)Disconnect joint connector (CAN1), and measure at the wiring harness side.
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(2)Connect the negative battery terminal, and turn the ignition switch to the ON position.
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(3)Voltage between D-03 joint connector (CAN1) terminal No.3 (CAN_H) and
body earth <3000, 3200-LHD, 3800>
OK: 4.0 V or less
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(4)Voltage between D-03 joint connector (CAN1) terminal No.14 (CAN_L) and
body earth <3000, 3200-LHD, 3800>
OK: 4.0 V or less
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(5)Voltage between D-03 joint connector (CAN1) terminal No.1 (CAN_H) and
body earth <3200-RHD>
OK: 4.0 V or less
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(6)Voltage between D-03 joint connector (CAN1) terminal No.12 (CAN_L) and
body earth <3200-RHD>
OK: 4.0 V or less
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(7)Disconnect the negative battery terminal.
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Q.
Is the check result normal?
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<4.0 V or less> Go to Step 16.
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<More than 4.0 V> Repair the wiring harness between joint connector (CAN1)
and the combination meter connector.
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STEP 16. Check the CAN line between joint connector (CAN1) and the
ETACS-ECU. Voltage measurement at D-03 joint connector (CAN1).
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| caution |
A digital multimeter should be used. For details refer to .
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| caution |
The test wiring harness should be used. For details refer
to .
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(1)Disconnect joint connector (CAN1), and measure at the wiring harness side.
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(2)Connect the negative battery terminal, and turn the ignition switch to the ON position.
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(3)Voltage between D-03 joint connector (CAN1) terminal No.6 (CAN_H) and
body earth
OK: 4.0 V or less
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(4)Voltage between D-03 joint connector (CAN1) terminal No.17 (CAN_L) and
body earth
OK: 4.0 V or less
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(5)Disconnect the negative battery terminal.
| caution |
Strictly observe the specified wiring harness repair procedure.
For details refer to .
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Q.
Is the check result normal?
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<4.0 V or less> Go to Step 19.
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<More than 4.0 V> Go to Step 17.
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STEP 17. M.U.T.-III CAN bus diagnostics [ETACS-ECU connector
disconnected]
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(1)Disconnect ETACS-ECU connector D-420, and diagnose by using the M.U.T.-III.
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(2)Diagnose CAN bus lines, and check if M.U.T.-III screen is as shown in the illustration.
Q.
Does M.U.T.-III screen correspond to the illustration?
Repair the wiring harness between joint connector (CAN2) and the ETACS-ECU connector.
Check the ETACS-ECU connector, and repair if necessary. If the ETACS-ECU connector
is in good condition, go to Step 18.
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STEP 18. M.U.T.-III CAN bus diagnostics (retest the system)
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Diagnose CAN bus lines, and check if M.U.T.-III screen shows normal state.
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Q.
Is the check result normal?
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The trouble can be an intermittent malfunction (Refer to GROUP 00 -
How
to use Troubleshooting/inspection Service Points -
How to Cope with Intermittent
Malfunction ).
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Replace the ETACS-ECU.
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STEP 19. Check the CAN line between joint connector (CAN1) and the
centre display. Voltage measurement at D-03 joint connector (CAN1).
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| caution |
A digital multimeter should be used. For details refer to .
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| caution |
The test wiring harness should be used. For details refer
to .
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(1)Disconnect joint connector (CAN1), and measure at the wiring harness side.
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(2)Connect the negative battery terminal, and turn the ignition switch to the ON position.
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(3)Voltage between D-03 joint connector (CAN1) terminal No.4 (CAN_H) and
body earth
OK: 4.0 V or less
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(4)Voltage between D-03 joint connector (CAN1) terminal No.15 (CAN_L) and
body earth
OK: 4.0 V or less
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(5)Disconnect the negative battery terminal.
| caution |
Strictly observe the specified wiring harness repair procedure.
For details refer to .
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Q.
Is the check result normal?
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YES <Vehicles without auto lamp or security alarm> : <4.0 V or less> Go to Step 23.
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YES <Vehicles with auto lamp or security alarm> : <4.0 V or less> Go to Step 21.
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NO : <More than 4.0 V> Go to Step 20.
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STEP 20. M.U.T.-III CAN bus diagnostics [centre display connector
disconnected]
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(1)Disconnect centre display connector D-106, and diagnose by using the M.U.T.-III.
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(2)Diagnose CAN bus lines, and check if M.U.T.-III screen is as shown in the illustration.
Q.
Does M.U.T.-III screen correspond to the illustration?
Repair the wiring harness between joint connector (CAN1) and the centre display
connector.
Check the centre display connector, and repair if necessary. If the centre display
connector is in good condition, repair the centre display power supply circuit. Refer to GROUP
54A, Centre display -
Symptom procedures .
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STEP 21. Check the CAN line between joint connector (CAN1) and the
CAN converter-ECU. Voltage measurement at D-03 joint connector (CAN1).
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| caution |
A digital multimeter should be used. For details refer to .
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| caution |
The test wiring harness should be used. For details refer
to .
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(1)Disconnect joint connector (CAN1), and measure at the wiring harness side.
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(2)Connect the negative battery terminal, and turn the ignition switch to the ON position.
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(3)Voltage between D-03 joint connector (CAN1) terminal No.7 (CAN_H) and
body earth
OK: 4.0 V or less
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(4)Voltage between D-03 joint connector (CAN1) terminal No.18 (CAN_L) and
body earth
OK: 4.0 V or less
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(5)Disconnect the negative battery terminal.
| caution |
Strictly observe the specified wiring harness repair procedure.
For details refer to .
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Q.
Is the check result normal?
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YES <vehicles with ASTC> : <4.0 V or less> Go to Step 23.
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YES <3200 (vehicles without ASTC)> : <4.0 V or less> Go to Step 25.
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YES <3000 (vehicles without ASTC), 3800 (vehicles without ASTC)> : <4.0 V or less>
Go to Step 27.
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NO : <More than 4.0 V> Go to Step 22.
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STEP 22. M.U.T.-III CAN bus diagnostics [CAN converter-ECU
connector disconnected]
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(1)Disconnect CAN converter-ECU connector D-252, and diagnose by using the M.U.T.-III.
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(2)Diagnose CAN bus lines, and check if M.U.T.-III screen is as shown in the illustration.
Q.
Does M.U.T.-III screen correspond to the illustration?
Repair the wiring harness between joint connector (CAN1) and the CAN converter-ECU
connector.
Check the CAN converter-ECU connector, and repair if necessary. If the CAN converter-ECU
connector is in good condition, repair the CAN converter-ECU power supply circuit. Refer to
GROUP 54A, Headlamp -
Symptom procedures .
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STEP 23. Check the CAN line between joint connector (CAN1) and the
steering wheel sensor. Voltage measurement at D-03 joint connector (CAN1).
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| caution |
A digital multimeter should be used. For details refer to .
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| caution |
The test wiring harness should be used. For details refer
to .
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(1)Disconnect joint connector (CAN1), and measure at the wiring harness side.
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(2)Connect the negative battery terminal, and turn the ignition switch to the ON position.
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(3)Voltage between D-03 joint connector (CAN1) terminal No.2 (CAN_H) and
body earth
OK: 4.0 V or less
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(4)Voltage between D-03 joint connector (CAN1) terminal No.13 (CAN_L) and
body earth
OK: 4.0 V or less
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(5)Disconnect the negative battery terminal.
| caution |
Strictly observe the specified wiring harness repair procedure.
For details refer to .
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Q.
Is the check result normal?
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YES <3000, 3800> : <4.0 V or less>
Go to Step 27.
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YES <3200> : <4.0 V or less>
Go to Step 25.
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NO <3800 and 3200> : <More than 4.0 V>
Go to Step 24.
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STEP 24. M.U.T.-III CAN bus diagnostics [steering wheel sensor
connector disconnected]
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(1)Disconnect steering wheel sensor connector D-308, and diagnose by using the M.U.T.-III.
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(2)Diagnose CAN bus lines, and check if M.U.T.-III screen is as shown in the illustration.
Q.
Does M.U.T.-III screen correspond to the illustration?
Repair the wiring harness between joint connector (CAN1) and the steering wheel
sensor connector.
Check the steering wheel sensor connector, and repair if necessary. If the steering
wheel sensor connector is in good condition, repair the steering wheel sensor power supply circuit.
Refer to GROUP 35C -
Diagnosis code procedures .
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STEP 25. Check the CAN line between joint connector (CAN1) and the
immobilizer-ECU. Voltage measurement at D-03 joint connector (CAN1).
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|
| caution |
A digital multimeter should be used. For details refer to .
|
|
|
|
| caution |
The test wiring harness should be used. For details refer
to .
|
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|
|
(1)Disconnect joint connector (CAN1), and measure at the wiring harness side.
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|
(2)Connect the negative battery terminal, and turn the ignition switch to the ON position.
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(3)Voltage between D-03 joint connector (CAN1) terminal No.5 (CAN_H) and
body earth
OK: 4.0 V or less
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(4)Voltage between D-03 joint connector (CAN1) terminal No.16 (CAN_L) and
body earth
OK: 4.0 V or less
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(5)Disconnect the negative battery terminal.
| caution |
Strictly observe the specified wiring harness repair procedure.
For details refer to .
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Q.
Is the check result normal?
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<4.0 V or less> Go to Step 27.
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<More than 4.0 V> Go to Step 26.
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STEP 26. M.U.T.-III CAN bus diagnostics [immobilizer-ECU connector
disconnected]
|
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|
(1)Disconnect immobilizer-ECU connector D-126, and diagnose by using the M.U.T.-III.
|
|
(2)Diagnose CAN bus lines, and check if M.U.T.-III screen is as shown in the illustration.
Q.
Does M.U.T.-III screen correspond to the illustration?
Repair the wiring harness between joint connector (CAN1) and the immobilizer-ECU
connector.
Check the immobilizer-ECU connector, and repair if necessary. If the immobilizer-ECU
connector is in good condition, repair the immobilizer-ECU power supply circuit. Refer to GROUP
54A, Immobilizer system -
Symptom procedures .
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STEP 27. Check the CAN line between joint connector (CAN1) and the
diagnosis connector. Voltage measurement at D-03 joint connector (CAN1).
|
|
|
| caution |
A digital multimeter should be used. For details refer to .
|
|
|
|
| caution |
The test wiring harness should be used. For details refer
to .
|
|
|
|
(1)Disconnect joint connector (CAN1), and measure at the wiring harness side.
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|
|
(2)Connect the negative battery terminal, and turn the ignition switch to the ON position.
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|
|
(3)Voltage between D-03 joint connector (CAN1) terminal No.1 (CAN_H) and
body earth <LHD>
OK: Less than 1.0 V
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(4)Voltage between D-03 joint connector (CAN1) terminal No.12 (CAN_L) and
body earth <LHD>
OK: Less than 1.0 V
|
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(5)Voltage between D-03 joint connector (CAN1) terminal No.3 (CAN_H) and
body earth <RHD>
OK: Less than 1.0 V
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(6)Voltage between D-03 joint connector (CAN1) terminal No.14 (CAN_L) and
body earth <RHD>
OK: Less than 1.0 V
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|
|
(7)Disconnect the negative battery terminal.
| caution |
Strictly observe the specified wiring harness repair procedure.
For details refer to .
|
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|
Q.
Is the check result normal?
|
|
|
<Less than 1.0 V> Repair the intermediate connector, or the wiring harness
between joint connector (CAN1) and the intermediate connector (D-230).
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<1.0 V or more> Repair the diagnosis connector, or the wiring harness between
joint connector (CAN1) and the diagnosis connector.
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STEP 28. M.U.T.-III CAN bus diagnostics [resistor <vehicles without
ASTC>
or ASTC-ECU <vehicles with ASTC>
connector disconnected]
|
|
|
(1)Disconnect resistor connector D-42 <vehicles without ASTC>
or
ASTC-ECU connector D-223 <vehicles with ASTC>
and diagnose by using the M.U.T.-III.
|
|
(2)Diagnose CAN bus lines, and check if M.U.T.-III screen is as shown in the illustration.
Q.
Does M.U.T.-III screen correspond to the illustration?
Go to Step 30.
Go to Step 29.
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STEP 29. M.U.T.-III CAN bus diagnostics (retest the system)
|
|
|
Diagnose CAN bus lines, and check if M.U.T.-III screen shows normal state.
|
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|
Q.
Is the check result normal?
|
|
|
The trouble can be an intermittent malfunction (Refer to GROUP 00 -
How
to use Troubleshooting/inspection Service Points -
How to Cope with Intermittent
Malfunction ).
|
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|
Check the resistor <vehicles without ASTC>
or ASTC-ECU <vehicles
with ASTC>
connector, and repair if necessary. If the resistor <vehicles without ASTC>
or
ASTC-ECU <vehicles with ASTC>ECU connector is in good condition, replace the
resistor <vehicles without ASTC>
or ASTC-ECU <vehicles with ASTC>.
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|
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|
STEP 30. M.U.T.-III CAN bus diagnostics (retest the system)
|
|
|
Diagnose CAN bus lines, and check if M.U.T.-III screen shows normal state.
|
|
|
Q.
Is the check result normal?
|
|
|
The trouble can be an intermittent malfunction (Refer to GROUP 00 -
How
to use Troubleshooting/inspection Service Points -
How to Cope with Intermittent
Malfunction ).
|
|
|
|
|
|
Check the combination meter connector, and repair if necessary. If the combination
meter connector is in good condition, replace the combination meter.
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