B1E9D-12

B1E9D-12-FRONT LEFT VENT CONTROL CIRCUIT - 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 above 5.0 volts on the (P421) Left Seat Vent 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. Using a scan tool, record and erase Diagnostic Trouble Codes (DTCs).
3. Turn the ignition off.
4. Start the engine and let it run.
5. Using a 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 Left Front Vented Seat. Attempt to reproduce condition by adjusting the seat.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. CHECK (P421) LEFT SEAT VENT FEED CIRCUIT FOR A SHORT TO VOLTAGE




1. Turn the ignition off.
2. Disconnect the HSM C5 harness connector.

NOTE: Check connectors. Clean and repair as necessary.

3. Start the engine and let it run.
4. Measure the voltage of the (P421) Left Seat Vent Feed circuit between the HSM C5 harness connector and ground.

Is there any voltage present?

Yes

- Repair the (P421) Left Seat Vent Feed circuit for a short to voltage.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. CHECK (P421) LEFT SEAT VENT FEED CIRCUIT FOR A SHORT TO VOLTAGE DURING SEAT ADJUSTMENT




1. Measure the voltage of the (P421) Left Seat Vent Feed circuit between the HSM C5 harness connector and ground while adjusting the seat in all positions.

Is there any voltage present during the seat adjustment?

Yes

- Repair the (P421) Left Seat Vent Feed circuit for a short to voltage.
- 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.