Diagnostic Test

VERIFY THAT DTC B1094-FRONT LEFT SEAT HEATER CONTROL CIRCUIT OPEN IS ACTIVE
1. With the scan tool, record and erase CCN DTC's
2. Operate the Heated Seat Switch in both positions several times.
3. With the scan tool, read DTC's.
  Does the DTC B1094-FRONT LEFT SEAT HEATER CONTROL CIRCUIT OPEN reset?
  
  Yes
  - Go to step 2
  No
  - The conditions that caused this code to set are not present at this time. Using the SYSTEM WIRING DIAGRAMS as a guide, inspect the wiring and connectors.
  - Perform BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
CHECK FOR AN OPEN SEAT HEATER ELEMENT CIRCUIT

Fig 1: Checking For An Open Seat Heater Element Circuit
Courtesy of CHRYSLER LLC
1. Disconnect the Left Seat Cushion Heater 2- way connector.
  NOTE: Check connectors - Clean and repair as necessary.
2. Measure the total resistance of the cushion and seat back heater elements at the Left Seat Cushion 2- way connector (component side).
  Is the total resistance 2.5 to 3.5 ohms + or - 0.5 ohms?
  
  Yes
  - Go to step 4
  No
  - Go to step 3
CHECK THE LEFT SEAT HEATER ELEMENT RESISTANCE

Fig 2: Checking Left Heater Element Seat Cushion And Seat Back Resistance
Courtesy of CHRYSLER LLC
1. Gain access to and disconnect the seat cushion and seat back heater connectors.
  NOTE: Check connectors - Clean and repair as necessary.
2. Measure 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.
3. For the seat cushion element the resistance value is 3 to 5.5 ohms.
4. For the seat back element the resistance value is 4 to 6 ohms.
  Is the resistance correct for each heater element?
  
  Yes
  - Check for an open in the pigtail harness and repair as necessary.
  - Perform BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Replace the heater element as necessary.
  - Perform BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
CHECK THE LEFT SEAT HEATER GROUND CIRCUIT

Fig 3: Checking Left Seat Heater Ground Circuit
Courtesy of CHRYSLER LLC
1. Using a 12-volt test light connected to 12-volts, check the (Z908) Ground circuit at the Left Seat Cushion Heater 2- way connector (harness side).
  Does the test light illuminate brightly?
  
  Yes
  - Go to step 5
  No
  - Repair the (Z908) Ground circuit for an open.
  - Perform BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
CHECK THE (P187) LEFT SEAT HEATER B(+) DRIVER CIRCUIT FOR AN OPEN

Fig 4: Checking Left Seat Heater B(+) Driver Circuit For An Open
Courtesy of CHRYSLER LLC
1. Disconnect the Heated Seat Module connector.
  NOTE: Check connectors - Clean and repair as necessary.
2. Measure the (P187) Left Seat Heater B(+) Driver circuit cavity D for (LHD) or K for (RHD) from the HSM connector to the Left Seat Cushion Heater 2- way connector (harness side).
  Is the resistance below 5.0 ohms?
  
  Yes
  - Replace the Heated Seat Module in accordance with the Service Information.
  - Perform BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Repair the (P187) Left Seat Heater B(+) Driver circuit for an open.
  - Perform BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .