B10B5

B10B5-CABIN HEATER 1 CONTROL CIRCUIT HIGH





For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
With the ignition on, the Cabin Heater Relay 1 is commanded on.

- Set Condition:
If the Totally Integrated Power Module detects a short to voltage on the (K132) Cabin Heater Relay 1 Control circuit.





1. VERIFY THAT THE DTC IS ACTIVE
1. Turn the ignition on.
2. With the scan tool, erase DTCs.
3. With the scan tool, actuate the Cabin Heater 1 Relay.
4. Monitor the scan tool for at least two minutes.
5. With the scan tool, read DTCs.

Does the scan tool display active: B10B5-CABIN HEATER 1 CONTROL CIRCUIT HIGH?

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. Body Verification Test.

2. CHECK THE (K132) CABIN HEATER RELAY 1 CONTROL CIRCUIT FOR SHORT TO VOLTAGE




1. Turn the ignition off.
2. Disconnect the TIPM C1 harness connector.
3. Remove the Cabin Heater Relay 1.
4. Turn the ignition on.
5. With a volt meter, measure the voltage on the (K132) Cabin Heater Relay 1 Control circuit.

Does the volt meter read 1.0 volt or above?

Yes

- Repair short to voltage on the (K132) Cabin Heater Relay 1 Control circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. TOTALLY INTEGRATED POWER MODULE




1. Turn the ignition on.
2. With the scan tool, erase DTCs.
3. With the scan tool, actuate the Cabin Heater 1 Relay.
4. Monitor the scan tool for at least two minutes.
5. With the scan tool, read DTCs.

Does the scan tool display active: B10B5-CABIN HEATER 1 CONTROL CIRCUIT HIGH?

Yes

- Replace the Totally Integrated Power Module (TIPM).
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the Cabin Heater Relay 1.
- Perform the BODY VERIFICATION TEST. Body Verification Test.