B10B9-CABIN HEATER 2 CONTROL CIRCUIT HIGH (TIPM)
For a complete wiring diagram Refer to Section 8W
- When Monitored:
With the ignition on, the Cabin Heater Relay 2 is commanded on.
- Set Condition:
If the Totally Integrated Power Module detects a short to voltage on the (K232) Cabin Heater Relay 2 Control circuit.
| Possible Causes |
| (K232) CABIN HEATER RELAY 2 CONTROL CIRCUIT SHORTED TO VOLTAGE |
| CABIN HEATER RELAY 2 |
| TOTALLY INTEGRATED POWER MODULE (TIPM) |
Diagnostic Test
1. VERIFY THAT THE DTC IS ACTIVETurn the ignition on.
With the scan tool, erase DTCs.
With the scan tool, actuate the Cabin Heater 2 Relay.
Monitor the scan tool for at least two minutes.
With the scan tool, read DTCs.
Does the scan tool, display active: B10B9–CABIN HEATER 2 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 – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
2. CHECK THE (K232) CABIN HEATER RELAY 2 CONTROL CIRCUIT FOR SHORT TO VOLTAGE
Turn the ignition off.
Disconnect the TIPM C1 harness connector.
Remove the Cabin Heater Relay 2.
Turn the ignition on.
With a volt meter, measure the voltage on the (K232) Cabin Heater Relay 2 Control circuit.
Does the volt meter read 1.0 volt or above?
Yes
- Repair short to voltage on the (K232) Cabin Heater Relay 2 Control circuit.
- Perform the BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
No
- Go To3
3. TOTALLY INTEGRATED POWER MODULE
Turn the ignition on.
With the scan tool, erase DTCs.
With the scan tool, actuate the Cabin Heater 2 Relay.
Monitor the scan tool for at least two minutes.
With the scan tool, read DTCs.
Does the scan tool display active: B10B9–CABIN HEATER 2 CONTROL CIRCUIT HIGH?
Yes
- Replace the Totally Integrated Power Module (TIPM in accordance with the service information.
- Perform the BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
No
- Replace the Cabin Heater Relay 2 in accordance with the service information.
- Perform the BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).