B1094-FRONT LEFT SEAT HEATER CONTROL CIRCUIT OPEN





For a complete wiring diagram Refer to Section 8W.


  • When Monitored:

    Ignition on, during the heated seat operation.

  • Set Condition:

    This code is set immediately after the Heated Seat Module detects an open in the seat heater B(+) driver circuit.


Possible Causes
  
(P187) LEFT SEAT HEATER B(+) DRIVER WIRE OPEN
  
(Z960) GROUND WIRE OPEN
  
SEAT CUSHION HEATER ELEMENT OPEN
  
SEAT BACK HEATER ELEMENT OPEN
  
HEATED SEAT MODULE
  



Diagnostic Test

1.VERIFY THAT DTC B1094-FRONT LEFT SEAT HEATER CONTROL CIRCUIT OPEN IS ACTIVE





Does the DTC B1094 FRONT LEFT SEAT HEATER 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. (Refer to BODY VERIFICATION TEST – VER 1).

2.CHECK FOR AN OPEN SEAT HEATER ELEMENT CIRCUIT




NOTE: Check connectors - Clean and repair as necessary.




Is the total resistance 2.5 to 3.5 ohms + or – .5 ohms?

Yes
  • Go To 4


No
  • Go To 3

3.CHECK THE LEFT SEAT HEATER ELEMENT RESISTANCE




NOTE: Check connectors - Clean and repair as necessary.






Is the resistance correct for each heater element?

Yes


No

4.CHECK THE LEFT SEAT HEATER GROUND CIRCUIT





Does the test light illuminate brightly?

Yes
  • Go To 5


No

5.CHECK THE (P187) LEFT SEAT HEATER B(+) DRIVER CIRCUIT FOR AN OPEN.




NOTE: Check connectors - Clean and repair as necessary.




Is the resistance below 5.0 ohms?

Yes


No