B120D

B120D-LEFT HEATED SEAT HI INDICATOR CONTROL CIRCUIT LOW





For a complete wiring diagram refer to Diagrams/Electrical.

- When Monitored: Continuously with the ignition on.
- Set Condition: This code is set immediately when the Cluster detects low voltage on the heated seat indicator control circuit.





Diagnostic Test

1.VERIFY THAT DTC B120D-LEFT HEATED SEAT HI INDICATOR CONTROL CIRCUIT LOW IS ACTIVE

With the scan tool, record and erase DTC's

Operate the Heated Seat Switch in both positions several times.

With the scan tool, read DTC's.

Does the DTC B120D-LEFT HEATED SEAT HI INDICATOR CONTROL CIRCUIT LOW reset?

Yes

- Go To 2

No

- The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

2.INSPECT JUNCTION BLOCK FUSE No. 2

Check Junction Block fuse No. 2.

Is the fuse open?

Yes

- Check for a possible short to ground on the (F21) Fused Ignition Switch Output Circuit and replace the fuse as necessary.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Go To 3

3.DISCONNECT THE CLUSTER C-3 CONNECTOR AND CHECK FOR VOLTAGE





Reinstall fuse if removed in previous test.

Disconnect the Cluster C-3 connector.

NOTE: Check connectors - Clean and repair as necessary.

Turn the ignition on.

Measure the voltage at the (P83) Driver Heated Seat High Indicator Driver circuit at the Cluster C-3 connector.

Is the voltage above 10.0 volts?

Yes

- Replace the Cluster.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Go To 4

4.CHECK THE (F21) FUSED IGNITION SWITCH OUTPUT (RUN-START)





Disconnect the Driver Heated Seat switch connector.

NOTE: Check connectors - Clean and repair as necessary.

Turn the ignition on.

Measure the voltage of the (F21) Fused Ignition Switch Output circuit at the Driver Heated Seat Switch connector.

Is the voltage above 10.0 volts ?

Yes

- Go To 5

No

- Repair the (F21) Fused Ignition Switch Output circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

5.CHECK THE (P83) DRIVER HEATED SEAT HIGH INDICATOR DRIVER CIRCUIT FOR A SHORT TO GROUND





Measure the resistance between ground and the (P83) Driver Heated Seat High Indicator Driver circuit.

Was the resistance below 5.0 ohms?

Yes

- Repair the (P83) Driver Heated Seat High Indicator Driver circuit for a short to ground
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Go To 6

6.CHECK THE (P83) DRIVER HEATED SEAT HIGH INDICATOR DRIVER CIRCUIT FOR AN OPEN





Measure the resistance of the (P83) Driver Heated Seat High Indicator Driver circuit between the Cluster C-3 connector and the Driver Heated Seat Switch connector.

Is the resistance below 5.0 ohms?

Yes

- Replace the Driver Heated Seat Switch.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Repair the (P83) Driver Heated Seat High Indicator Driver circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test