INSPECTION PROCEDURE P-5: The driver’s door switch signal is not received. <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 front door switch (RH) is used to operate the functions below. If the signal is abnormal, these functions will not work normally.

Lamp reminder function
Headlamp automatic-shutdown function
Room lamps

POSSIBLE CAUSES

Malfunction of the front door switch (RH)
Malfunction of the ETACS-ECU
Damaged harness wires and connectors

DIAGNOSTIC 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: D-02 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: C-219 ETACS-ECU connector

Q. Is the check result normal?

Go to Step 5.

Repair the defective connector.

Step 5. Check the wiring harness between D-02 front door switch (RH) connector terminal No.1 and C-219 ETACS-ECU connector terminal No.10.

note

Prior to the wiring harness inspection, check joint connector C-210, and repair if necessary.

Check the input line for open circuit.

Q. Is the check result normal?

Go to Step 6.

Repair the wiring harness.

Step 6. Retest the system.

Check that the front door switch (RH) signal is received normally.

Q. Is the check result normal?

	The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).

	Replace the ETACS-ECU.