Inspection Procedure B-1: Power Windows do not Work at All.

caution

Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.

COMMENTS ON TROUBLE SYMPTOM

If the power windows do not work at all, the power window relay, the power window main switch or the ETACS-ECU may be defective.

PROBABLE CAUSES

Malfunction of the power window relay
Malfunction of the power window main switch
Malfunction of the ETACS-ECU
Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code.

When the ignition switch is turned to the "ON" position, check that the ETACS-ECU does not set the diagnosis code.

Q. Is the diagnosis code set?

	Refer to .

	Go to Step 2.

STEP 2. M.U.T.-III data list

Check the input signal from the ignition switch (IG1).

Ignition switch: ON

Item No.	Item name	Normal condition
30	Ignition switch (IG1)	ON

OK: Normal condition is displayed.

Q. Is the check result normal?

	Go to Step 3.

	Refer to GROUP 54A, Inspection Procedure C-3 "The ignition switch (IG1) signal is not received ."

STEP 3. Connector check: A-24X power window relay connector

Q. Is the check result normal?

Go to Step 4.

Repair the connector.

STEP 4. Check the power window relay.

Refer to

Q. Is the check result normal?

	Go to Step 5.

	Replace the power window relay.

STEP 5. Voltage measurement at the A-24X power window relay connector.

(1)Disconnect the connector, and measure at the wiring harness side.
(2)Turn the ignition switch to the ON position.

(3)Check the voltage between the A-24X power window relay connector terminal No.4 and body earth.
OK: System voltage

Q. Is the check result normal?

Go to Step 7.

Go to Step 6.

STEP 6. Check the wiring harness between A-24X power window relay connector terminal No.4 and fusible link (23).

Check the power supply line for open circuit.

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

Repair the wiring harness.

STEP 7. Voltage measurement at the A-24X power window relay connector.

(1)Disconnect the connector, and measure at the wiring harness side.
(2)Turn the ignition switch to the ON position.

(3)Check the voltage between the A-24X power window relay connector terminal No.2 and body earth.
OK: System voltage

Q. Is the check result normal?

Go to Step 10.

Go to Step 8.

STEP 8. Connector check: C-219 ETACS-ECU connector

Q. Is the check result normal?

Go to Step 9.

Repair the connector.

STEP 9. Check the wiring harness between C-219 ETACS-ECU connector terminal No.59 and A-24X power window relay connector terminal No.2.

note

Prior to the wiring harness inspection, check intermediate connector C-33, and repair if necessary.

Check the power supply line for open circuit.

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

Repair the wiring harness.

STEP 10. Resistance measurement at the A-24X power window relay connector.

(1)Disconnect the connector, and measure at the wiring harness side.

(2)Continuity between A-24X power window relay connector terminal No.1 and body earth
OK: Continuity (Less than 2 Ω)

Q. Is the check result normal?

Go to Step 12.

Go to Step 11.

STEP 11. Check the wiring harness between A-24X power window relay connector terminal No.1 and body earth.

Check the earth wires for open circuit.

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

Repair the wiring harness.

STEP 12. Connector check: E-03 power window main switch connector

Q. Is the check result normal?

Go to Step 13.

Repair the connector.

STEP 13. Voltage measurement at the E-03 power window main switch connector.

(1)Disconnect the connector, and measure at the wiring harness side.
(2)Turn the ignition switch to the ON position.

(3)Check the voltage between the E-03 power window relay connector terminal No.6 and body earth.
OK: System voltage

Q. Is the check result normal?

Go to Step 15.

Go to Step 14.

STEP 14. Check the wiring harness between A-24X power window relay connector terminal No.3 and E-03 power window main switch connector terminal No.6.

note

Prior to the wiring harness inspection, check intermediate connector C-33, C-133 and joint connector C-32, and repair if necessary.

Check the power supply line for open circuit.

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

Repair the harness wire.

STEP 15. Resistance measurement at the E-03 power window main switch connector.

(1)Disconnect the connector, and measure at the wiring harness side.

(2)Check the resistance between E-03 power window main switch connector terminal No.2 and body earth.
OK: Continuity (Less than 2 Ω)

Q. Is the check result normal?

Go to Step 17.

Go to Step 16.

STEP 16. Check the wiring harness between E-03 power window main switch connector terminal No.2 and body earth.

note

Prior to the wiring harness inspection, check intermediate connector C-133, and repair if necessary.

Check the earth wires for open circuit.

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

Repair the wiring harness.

STEP 17. Retest the system.

After the power window main switch is replaced, check that all the power windows work.

(1)Replace the power window main switch.

(2)Check that the all the power windows work.

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.