B1092
B1092-FRONT LEFT SEAT HEATER CONTROL CIRCUIT LOWB1092 - Front Left Seat Heater Control Circuit Low:
WHEN MONITORED
Ignition on, during the heated seat operation.
SET CONDITION
This code is set immediately after the Heated Seat Module detects the control circuit shorted to ground.
POSSIBLE CAUSES
- (P187) Left seat heater B(+) driver shorted to ground
- Seat cushion heater element shorted
- Seat back heater element shorted
- Heated seat module
Diagnostic Test
1. VERIFY THAT DTC B1092-FRONT LEFT SEAT HEATER 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.
Q: Does the DTC B1092 - FRONT LEFT SEAT HEATER 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 the BODY VERIFICATION TEST - VER 1. Body Verification Test
2. DISCONNECT LEFT CUSHION HEATER 4-WAY CONNECTOR AND READ DTC'S
Disconnect the Left Seat Cushion Heater 4 - connector.
NOTE: Check connectors - Clean and repair as necessary.
With the scan tool, erase HSM DTC's
Operate the Heated Seat Switch in both positions several times.
With the scan tool, read DTC's.
Q: Does the scan tool display the same DTC?
YES: Go To 5
NO: Go To 3
3. CHECK THE (P187) LEFT SEAT HEATER B(+) DRIVER FOR A SHORT TO GROUND AT THE SEAT
Measure between the (P187) Left Seat Heater B(+) Driver circuit at the Left Seat Heater connector (component side) and the seat frame for a short to ground.
Q: Is the resistance below 1000 ohms?
NO: Go To 4
YES: Repair/replace the pigtail/heating element as necessary for a short to ground condition. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test
4. CHECK THE LEFT HEATER ELEMENT SEAT CUSHION AND SEAT BACK RESISTANCE
Gain access to the seat cushion and seat back heater connectors. Check the resistance of each of the heater elements by measuring between the (P187) Left Seat Heater B(+) Driver and the Ground circuit at the seat cushion and seat back heater connectors.
For the seat cushion element the resistance value is 3.8 to 4.8 ohms.
For the seat back element the resistance value is 4.3 to 5.4 ohms.
Q: Is the resistance correct for each heater element?
YES: Using the wiring diagram/schematic as a guide, inspect the wiring and connectors for an intermittent short to ground.
NO: Replace the heater element as necessary. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test
5. Check the (P187) Left Seat Heater B(+) Driver circuit for a short to ground
Disconnect the Heated Seat Module connector.
NOTE: Check connectors - Clean and repair as necessary.
Measure the (P187) Left Seat Heater B(+) Driver circuit to ground at the HSM connector.
Q: Is the resistance below 5.0 ohms?
YES: Repair the (P187) Left Seat Heater B(+) Driver circuit for a short to ground. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Replace the Heated Seat Module. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test