B10C4-12
B10C4-12-HEATED STEERING WHEEL CONTROL - CIRCUIT SHORT TO BATTERY
For a complete wiring diagram, refer to the Wiring Information.
- When Monitored:
With the engine running.
- Set Condition:
The Heated Seat Module (HSM) detects voltage on the (C91) Heated Steering Wheel Feed circuit for more than two seconds with the output turned off.
1. TEST FOR INTERMITTENT CONDITION
NOTE: Make sure the battery is fully charged and the charging system is operating properly before proceeding.
1. Turn the ignition on.
2. With the scan tool, record and erase Diagnostic Trouble Codes (DTCs).
3. Turn the ignition off.
4. Start the engine and let it run.
5. With the scan tool, read DTCs.
Is the DTC active?
Yes
- Go To 2
No
- The conditions that caused this code to set are not present at this time. Verify seat harness is routed correctly to the HSM. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals. Attempt to reproduce condition by operating all HSM functions one at a time, except for the HSW. Attempt to reproduce condition by rotating the steering wheel. Attempt to reproduce condition by adjusting the seat.
- Perform the BODY VERIFICATION TEST. Body Verification Test.
2. CHECK FOR SHORTED (C91) HEATED STEERING WHEEL FEED CIRCUIT BETWEEN SCM AND HSM
WARNING: Turn the ignition off, disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
1. Disconnect the SCM C1 harness connector.
NOTE: Check connectors. Clean and repair as necessary.
WARNING: Turn the ignition on, then reconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
2. Measure the voltage between ground and the (C91) Heated Steering Wheel Feed circuit at the SCM C1 harness connector.
Is there any voltage present?
Yes
- Go To 3
No
- Go To 5
3. CHECK (C91) HEATED STEERING WHEEL FEED CIRCUIT FOR A SHORT TO THE (F922) FUSED IGNITION RUN CONTROL OUTPUT
1. Turn the ignition off.
2. Disconnect the HSM C4 harness connector.
NOTE: Check connectors. Clean and repair as necessary.
3. Measure the resistance between the (C91) Heated Steering Wheel Feed circuit and the (F922) Fused Ignition Run Control Output circuit at the HSM C4 harness connector.
Is the resistance below 10k Ohms?
Yes
- Repair the short between the (C91) Heated Steering Wheel Feed circuit and the (F922) Fused Ignition Run Control Output circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.
No
- Go To 4
4. CHECK (C91) HEATED STEERING WHEEL FEED CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition on.
2. Measure the voltage of the (C91) Heated Steering Wheel Feed circuit between the HSM C4 harness connector and ground.
Is there any voltage present?
Yes
- Repair the short to voltage in the (C91) Heated Steering Wheel Feed circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.
No
- Replace the Heated Seat Module (HSM). Heated Seat Module - Removal
- Perform the BODY VERIFICATION TEST. Body Verification Test.
5. CHECK FOR A SHORTED SCM
WARNING: Turn the ignition off, disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
1. Remove the Driver Airbag. Driver Air Bag - Removal.
2. Disconnect the SCM C2 harness connector.
Note: Before proceeding, thoroughly inspect the wiring harness and connectors between the HSW and the Steering Control Module. Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.
3. Reconnect the SCM C1 harness connector.
WARNING: Turn the ignition on, then reconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
4. Turn the ignition on.
5. Measure the voltage of the (C91) Heated Steering Wheel Feed circuit between the SCM C2 component connector and ground.
Is there any voltage present?
Yes
- Replace the Steering Column Control Module (SCCM). Steering Column Module - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.
No
- Replace the Heated Steering Wheel (HSW). Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.