B10C4-1E
B10C4-1E-HEATED STEERING WHEEL CONTROL - CIRCUIT RESISTANCE OUT OF RANGE
For a complete wiring diagram, refer to the Wiring Information.
- When Monitored:
With the engine running.
- Set Condition:
The Heated Seat Module (HSM) detects current between 0.5 and 1.0 amp on the (C91) Heated Steering Wheel Feed circuit for more than two seconds when the output is turned on.
1. TEST FOR INTERMITTENT CONDITION
NOTE: Before proceeding, verify the battery is fully charged, the charging system is operating properly, no Battery or System Voltage Diagnostic Trouble Codes (DTCs) are set, and the HSM Power and Ground circuits are clean and tight.
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. Turn the HSW on.
6. 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 rotating the steering wheel. Attempt to reproduce condition by adjusting the seat.
- Perform the BODY VERIFICATION TEST. Body Verification Test.
2. CHECK HSW CIRCUIT RESISTANCE
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. Measure the resistance between the (C91) Heated Steering Wheel Feed circuit and the (C986) Heated Steering Wheel Return circuit at the SCM C2 harness connector.
Is the resistance 1.85 ± 0.2 Ohms?
Yes
- Go To 3
No
- Replace the Heated Steering Wheel (HSW). Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.
3. CHECK (C91) HEATED STEERING WHEEL FEED CIRCUIT FOR HIGH RESISTANCE
1. Disconnect the HSM C4 harness connector.
NOTE: Check connectors. Clean and repair as necessary.
2. Measure the resistance of the (C91) Heated Steering Wheel Feed circuit between the SCM C2 component connector and the HSM C4 harness connector.
Is the resistance below 5.0 Ohms?
Yes
- Go To 4
No
- Go To 5
4. CHECK (C986) HEATED STEERING WHEEL RETURN CIRCUIT FOR A HIGH RESISTANCE
1. Measure the resistance of the (C986) Heated Steering Wheel Return circuit between the SCM C2 component connector and the HSM C4 harness connector.
Is the resistance below 5.0 Ohms?
Yes
- Replace the Heated Seat Module (HSM). Heated Seat Module - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.
No
- Go To 6
5. CHECK (C91) HEATED STEERING WHEEL FEED CIRCUIT FOR HIGH RESISTANCE BETWEEN SCM AND HSM
1. Disconnect the SCM C1 harness connector.
NOTE: Check connectors. Clean and repair as necessary.
2. Measure the resistance of the (C91) Heated Steering Wheel Feed circuit between the SCM C1 harness connector and the HSM C4 harness connector.
Is the resistance below 5.0 Ohms?
Yes
- Replace the Steering Control Module (SCM). Steering Column Module - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.
No
- Repair the high resistance in the (C91) Heated Steering Wheel Feed circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.
6. CHECK (C986) HEATED STEERING WHEEL RETURN CIRCUIT FOR HIGH RESISTANCE BETWEEN SCM AND HSM
1. Disconnect the SCM C1 harness connector.
NOTE: Check connectors. Clean and repair as necessary.
2. Measure the resistance of the (C986) Heated Steering Wheel Return circuit between the SCM C1 harness connector and the HSM C4 harness connector.
Is the resistance below 5.0 Ohms?
Yes
- Replace the Steering Control Module (SCM). Steering Column Module - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.
No
- Repair the high resistance in the (C986) Heated Steering Wheel Return circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.