|
Check Conditions
- 3.5 seconds elapse after the electric motor switch is turned ON, or 2 seconds elapse
after the main battery starts to be charged.
- Not while ground fault is prevented from being detected (not during the quick charge).
|
|
Judgement Criterion
- If the main battery ground fault detector input is not turned ON within 5.5 seconds
after the pre-check signal is turned ON from OFF.
|
|
- If the main battery ground fault detector input is not
turned OFF within 2.5 seconds after the pre-check signal is turned OFF from ON.
|
|
- Ground fault of high voltage system component.
- The main battery ground fault detector is failed.
- Open circuits of main battery ground fault detector circuit, short circuits to earth,
short circuits to power supply system or damage; poor contact of connector.
- The BMU is failed.
|
|
Q.
Is the diagnosis code of P1A44 set?
|
|
Check detecting ground fault (Code No. P1A44: Detecting Ground Fault ).
|
|
|
|
Q.
Is the check result normal?
|
|
- Disconnect connector, and measure at harness side.
- Electric motor switch: ON
- Voltage between terminal No. 4 and earth.
|
|
Q.
Is the check result normal?
|
|
Q.
Is the check result normal?
|
|

Check intermediate connectors B-27, C-102
and C-112, and repair if necessary. If intermediate connectors are normal, check and repair
harness between A-08X (terminal No. 1) EV control relay connector and C-22 (terminal No. 4)
main battery connector.
- Check power supply line for open/short circuit.
|
|
|
|
- Disconnect connector, and measure at harness side.
- Resistance between terminal No. 5 and earth.
|
|
OK: Continuity (2 Ω or less)
|
|
Q.
Is the check result normal?
|
|

Check and repair harness between C-22 (terminal No.
5) main battery connector and body earth.
- Check earthing line for open circuit and damage.
|
|
|
|
Q.
Is the check result normal?
|
|
- Disconnect connector, and measure at harness side.
- Resistance between terminal No. 6 and earth.
|
|
OK: Continuity (2 Ω or less)
|
|
Q.
Is the check result normal?
|
|

Check intermediate connector C-104, and repair
if necessary. If intermediate connector is normal, check and repair harness between C-21 (terminal No.
6) main battery connector and body earth.
- Check earthing line for open circuit and damage.
|
|
|
|
Q.
Is the check result normal?
|
|
- Check power supply line for damage.
|
|
Q.
Is the check result normal?
|
|
Q.
Is the check result normal?
|
|
- Measure BMU terminal voltage.
- Disconnect C-21 main battery connector.
- Electric motor switch: ON
- Voltage between terminal No. 35 and earth.
|
|
Q.
Is the check result normal?
|
|

Check and repair harness between C-109 (terminal No.
35) BMU connector and C-21 (terminal No. 5) main battery connector.
- Check output line for short circuit to power supply.
|
|
|
|
- Check output line for open circuit, short circuit to earth and damage.
|
|
Q.
Is the check result normal?
|
|
- Check signal line for open circuit, short circuit to earth, short circuit
to power supply system and damage.
|
|
Q.
Is the check result normal?
|
|
- Measure BMU terminal voltage.
- Electric motor switch: "LOCK" (OFF) → ON
- Voltage between terminal No. 46 and earth.
|
|
OK: 5.3 V or more → 1 V or less (After several seconds elapse)
|
|
Q.
Is the check result normal?
|
|
- Measure BMU terminal voltage.
- Electric motor switch: "LOCK" (OFF) → ON
- Voltage between terminal No. 35 and earth.
|
|
OK: 8 V or more → 1.3 V or less (After several seconds elapse)
|
|
Q.
Is the check result normal?
|
|
Q.
Is the diagnosis code set?
|
|
Replace the main battery.
|
|
|
|
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection
Service Points - How to Cope with Intermittent Malfunctions ).
|
|
|