B1098-FRONT RIGHT 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

(P188) RIGHT SEAT HEATER B(+) DRIVER WIRE OPEN

GROUND WIRE OPEN

SEAT CUSHION HEATER ELEMENT OPEN

SEAT BACK HEATER ELEMENT OPEN

HEATED SEAT MODULE

1.VERIFY THAT DTC B1098-FRONT RIGHT SEAT HEATER CONTROL CIRCUIT OPEN IS ACTIVE

Does the DTC B1098 FRONT RIGHT SEAT HEATER CONTROL CIRCUIT OPEN reset?

Yes

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 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

2.CHECK FOR AN OPEN SEAT HEATER B(+) DRIVER FROM HSM TO SEAT CUSHION

NOTE: Check connectors - Clean and repair as necessary.

Is the resistance below 2 ohms?

Yes

Repair the open Seat Heater B(+) Driver circuit.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

3.CHECK THE RIGHT SEAT HEATER CUSHION GROUND CIRCUIT

Does the test light illuminate brightly?

Yes

Repair the open ground circuit.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

4.CHECK THE RIGHT CUSHION PAD HEATER RESISTANCE

Is the resistance above 4.9 ohms?

Yes

Replace the seat cushion pad heater element as necessary.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

5.CHECK THE RIGHT SEAT BACK HEATER RESISTANCE

NOTE: Check connectors - Clean and repair as necessary.

Is the resistance above 5.5 ohms?

Yes

Replace the seat back heater element as necessary.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

6.CHECK THE RIGHT SEAT BACK HEATER GROUND CIRCUIT

Does the test light illuminate brightly?

Yes

Repair the open ground circuit.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

7.CHECK FOR AN OPEN SEAT HEATER B(+) DRIVER FROM HSM TO SEAT BACK

NOTE: Check connectors - Clean and repair as necessary.

Is the resistance below 2.0 ohms?

Yes

Replace the Heated Seat Module.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

Repair the (P188) Right Seat Heater B(+) Driver circuit for an open back to the splice.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)