B120F

B120F-LEFT HEATED SEAT HI INDICATOR CONTROL CIRCUIT OPEN

B120F-Left Heated Seat Hi Indicator Control Circuit Open:

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.

POSSIBLE CAUSES
- PDC fuse #40
- (F23) Fused ignition switch output (run-start) circuit open
- (P83) Left heated seat high indicator driver circuit open/shorted to ground
- Left heated seat switch
- Cluster

DIAGNOSTIC TEST

1. VERIFY THAT DTC B120F-LEFT HEATED SEAT HI INDICATOR CONTROL CIRCUIT OPEN 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.
Q: Does the DTC B120F-LEFT HEATED SEAT HI INDICATOR CONTROL CIRCUIT OPEN 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 PDC FUSE #40
Check PDC fuse #40.

Q; Is the fuse open?

YES: Check for a possible short to ground on the (F23) Fused Ignition Switch Output (Run-Start) Circuit and replace the fuse as necessary. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 3

3. DISCONNECT THE CLUSTER C3 CONNECTOR AND CHECK FOR VOLTAGE




Reinstall fuse if removed in previous test.
Disconnect the Cluster C3 connector.

NOTE: Check connectors - Clean and repair as necessary.

Turn the ignition on.
Measure the voltage at the (P83) Left Heated Seat High Indicator Driver circuit at the Cluster C3 connector.

Q: 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 (F23) FUSED IGNITION SWITCH OUTPUT (RUN-START)




Disconnect the Left Heated Seat switch connector.

NOTE: Check connectors - Clean and repair as necessary.

Turn the ignition on.
Measure the voltage of the (F23) Fused Ignition Switch Output (Run- Start) circuit at the Left Heated Seat Switch connector.

Q: Is the voltage above 10.0 volts?

YES: Go To 5
NO: Repair the (F23) Fused Ignition Switch Output (Run-Start) circuit for an open. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

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




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

Q: Was the resistance below 5.0 ohms?

YES: Repair the (P83) Left 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) LEFT HEATED SEAT HIGH INDICATOR DRIVER CIRCUIT FOR AN OPEN




Measure the resistance of the (P83) Left Heated Seat High Indicator Driver circuit between the Cluster C3 connector and the Left Heated Seat Switch connector.

Q: Is the resistance below 5.0 ohms?

YES: Replace the Left Heated Seat Switch. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Repair the (P83) Left Heated Seat High Indicator Driver circuit for an open. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test