Inspection Procedure J-7: The front door switch (RH) signal is not received. <COLT CZ3 (RH drive vehicles)>


caution Whenever the ECU is replaced, ensure that the input signal circuit is normal.


COMMENTS ON TROUBLE SYMPTOM


Input signal from the driver’s door switch is used to operate the functions below. If the signal is abnormal, these functions will not work normally.

PROBABLE CAUSES



DIAGNOSIS PROCEDURE

STEP 1. Check the installation condition.
Check that the front door switch (RH) is installed on the body correctly.

Q. Is the check result normal?
Go to Step 2.
Correct the installation condition.

STEP 2. Connector check: C-32 front door switch (RH) connector

Q. Is the check result normal?

Go to Step 3.

Repair the defective connector.

STEP 3. Check the front door switch (RH).
Refer to GROUP 42 - Door .

Q. Is the check result normal?
Go to Step 4.
Replace the front door switch (RH).

STEP 4. Connector check: B-233 ETACS-ECU connector

Q. Is the check result normal?

Go to Step 5.

Repair the defective connector.

STEP 5. Check the wiring harness between C-32 front door switch (RH) connector terminal No.2 and B-233 ETACS-ECU connector terminal No.51.



  • Check the input line for open circuit and short circuit.

Q. Is the check result normal?

Go to Step 6.

Repair the wiring harness.

STEP 6. M.U.T.-III data list
Check the input signals from the driver’s door switch.

  • Open the driver’s door.
Item No.
 Item name
 Normal condition
19
 Driver’s door switch
 ON
OK: Normal condition is displayed.

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 ).
Replace the ETACS-ECU. Then perform the variant coding and write the VIN data (Refer to GROUP 00, Precautions Before Service - How to Perform Variant Coding ).