Auxiliary Heater (ZHZ)

9015-BLOWER MOTOR CIRCUIT LOW (ZHZ)

For a complete wiring diagram, Refer to the Wiring Information Electrical Diagrams.

- When Monitored:
Whenever the module is awake.

- Set Condition:
When the Blower Motor circuit is shorted to ground.





1. TEST FOR INTERMITTENT CONDITION
1. With the scan tool, record and erase DTCs
2. Turn the ignition on and wait 30 seconds.
3. Operate the Blower Motor.
4. With the scan tool, read DTCs.

Does the scan tool display this DTC as active?

Yes

- Go To 2

No

- The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
- Perform the BODY VERIFICATION TEST.Verification Tests.

2. BLOWER MOTOR
1. Disconnect the A/C Heater Control harness connectors.
2. With the scan tool, record and erase DTCs
3. Cycle the ignition from on to off three times.
4. Turn the ignition on.
5. Operate the Blower Motor.
6. With the scan tool, read DTCs.

Does the scan tool display this DTC as active?

No

- Replace the Blower Motor.
- Perform the BODY VERIFICATION TEST. Verification Tests.

Yes

- Go To 3

3. BLOWER MOTOR CIRCUIT SHORTED TO GROUND
1. Turn the ignition off.
2. Disconnect the Blower Motor harness connector.
3. Measure the resistance between Ground and the Blower Motor circuit.

Does the Ohm meter read open circuit?

Yes

- Replace the A/C Heater Control.
- Perform the BODY VERIFICATION TEST. Verification Tests.

No

- Repair the Blower Motor circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Verification Tests.