Note

"Voltage too low" means that the measured fan voltage is less than the

1. Check the heating activation relay.

Battery positive voltage must be present at terminal 87 when the ignition is switched on.

2. Pull off connector C on the heating/air conditioning control.

Fault, DTC

Possible causes, elimination, notes

3. Connect voltmeter to C 14 (plus) and ground.

Display: Battery positive voltage

4. Push connector C on the heating/air conditioning control.

5. Connect voltmeter to C 14 (plus) and C 11 (minus),

Minimum fan speed Display: approx. 0 V

6. Connect voltmeter to C 14 (plus) and C 16 (minus).

Minimum fan speed Display: approx. 9 V

Connect voltmeter to plus and pin 3 on the driver connector. Connect voltmeter to plus and pin 1 on the driver connector.

Minimum fan speed Display: approx. 9 V

Connect voltmeter to plus and pin 2 on the driver connector.

Minimum fan speed Display: approx. 0 V

8. Check wiring from the heating/air conditioning control to the driver

9. Check fan motor.

Fault, DTC

Possible causes, elimination, notes

Voltage too high Note

A higher fan voltage can be caused only by a short to ground on the wires on pin 1 or pin 2 of the driver.

1. Pull off connector C on the heating/air conditioning control.

2. Pull off connector on the driver.

3. Connect ohmmeter to C 16 and ground.

4. Pull off connector on the fan motor.

5. Connect ohmmeter to driver connector pin 2 and ground.

Test point 13

Control module

Replace the heating/air conditioning control.

Control module faulty DTC 32

Test point 14

Sun sensor

Diagnosis conditions

No control module fault stored. No fault on the supply voltage (5 Volt).

Short to B+ Short to ground DTC 33

Short to B+/short to ground

1. Remove sun sensor.

2. Disconnect plug connection on the sun sensor,

3. Connect voltmeter to sleeve side of pin 2 (minus) and pin 3 (plus).

If 0 Volt is displayed, check wiring to the heating/air conditioning control A 12 and B 18 for continuity.

Check wiring to the heating/air conditioning control B 18 for short to ground.

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