Code No.C1382: G-sensor malfunction (low voltage) <4WD>
Code No.C1383: G-sensor malfunction (high voltage) <4WD>












caution
  • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table .).
  • Before replacing the ECU, ensure that the communication circuit is normal.

OPERATION



DIAGNOSIS CODE SET CONDITIONS



Code No.C1382
  • With diagnosis code No. C1365 being not set, the input value from the G-sensor is excessive low.
Code No.C1383
  • With diagnosis code No. C1365 being not set, the input value from the G-sensor is excessive high.

PROBABLE CAUSES



  • Damaged wiring harness or connector
  • Malfunction of the G-sensor
  • Malfunction of the ABS-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnosis.
Use M.U.T.-III to diagnose the CAN bus lines.

Q. Is the check result normal?
Go to Step 3.
Repair the CAN bus line (Refer to GROUP 54C - CAN Bus Diagnostics Table .). Then go to Step 2.

STEP 2. Diagnosis code recheck after resetting CAN bus lines

Q. Are diagnosis codes No.C1382 or No.C1383 set?
Go to Step 3.
The procedure is complete.

STEP 3. M.U.T.-III data list
Check the following data list (Refer to .).

  • Item 09: G sensor

Q. Is the check result normal?
Go to Step 9.
Go to Step 4.

STEP 4. Connector check: A-01 ABS-ECU connector, C-13 intermediate connector, C-128 G-sensor connector

Q. Is the check result normal?
Go to Step 5.
Repair or replace it. Then go to Step 10.

STEP 5. Resistance measurement at A-01 ABS-ECU connector
(1)Disconnect the A-01 ABS-ECU connector.
(2)Disconnect the C-128 G-sensor connector.
(3)Measure the resistance between the A-01 ABS-ECU connector terminal No.10 and the body earth.
OK: No continuity

Q. Is the check result normal?
Go to Step 6.
A short circuit may be present in the signal circuit. Repair the wiring harness between the A-01 ABS-ECU terminal No.10 and the C-128 G-sensor connector terminal No.2. Then go to Step 10.

STEP 6. Resistance measurement between A-01 ABS-ECU connector and C-128 G-sensor connector
(1)Disconnect the A-01 ABS-ECU connector.
(2)Disconnect the C-128 G-sensor connector.
(3)Measure the resistance between the A-01 ABS-ECU connector terminal No.10 and the C-128 G-sensor connector terminal No.2.
OK: Continuity exists (2 Ω or less)

Q. Is the check result normal?
Go to Step 7.
An open circuit may be present in the signal circuit. Repair the wiring harness between the A-01 ABS-ECU terminal No.10 and the C-128 G-sensor connector terminal No.2. Then go to Step 10.

STEP 7. Voltage measurement at C-128 G-sensor connector.
(1)Disconnect the C-128 G-sensor connector and A-01 ABS-ECU connector, and measurement at the harness-side connector.
(2)Turn the ignition switch to the "ON" position.
(3)Measure the voltage between terminal No.2 and body earth.
OK: 0.5 V or less

Q. Is the check result normal?
Go to Step 8.
A short circuit may be present. Repair the wiring harness between the A-01 ABS-ECU terminal No.10 and the C-128 G-sensor connector terminal No.2. Then go to Step 10.

STEP 8. G-sensor check
Refer to .

Q. Is the check result normal?
Go to Step 9.
Replace the G-sensor (Refer to .). Then go to Step 10 .

STEP 9. Diagnosis code recheck
Erase the diagnosis code.

Q. Are diagnosis codes No.C1382 or No.C1383 set?
Replace the hydraulic unit (integrated with ABS-ECU) (Refer to ). Then go to Step 10.
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunctions .).

STEP 10. Diagnosis code recheck
Erase the diagnosis code.

Q. Are diagnosis codes No.C1382 or No.C1383 set?
Return to Step 1.
This diagnosis is complete.