U0208

U0208-LOST COMMUNICATION WITH HEATED SEATS CONTROL MODULE

U0208 - Lost Communication With Heated Seats Control Module:

WHEN MONITORED
With the ignition on.

SET CONDITION
The Cluster does not receive information from the Heated Seats Control Module.

POSSIBLE CAUSES
- (D506) LIN BUS circuit open
- (F937) Fused ignition switch output (run) open
- (Z908) Ground circuit open
- Heated seats module

Diagnostic Test

1. CHECK FOR AN ACTIVE DTC

Turn the ignition on.
With the scan tool, record and erase DTCs.
Wait 30 seconds.
With the scan tool, read DTCs.

Q: Does the scan tool display: U0208-LOST COMMUNICATION WITH HEATED SEATS CONTROL MODULE?

YES: Go To 2
NO: The condition that caused this code to set is not present at this time. Check for an intermittent condition by inspecting the related wiring harness for chaffed, pierced, pinched, and partially broken wires. Also inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test




2. (D506) LIN BUS CIRCUIT OPEN

Turn the ignition off.
Disconnect the Heated Seats Module harness connector.
Turn the ignition on.
Measure the voltage of the (D506) LIN BUS circuit.

Q: Is the voltage above 5 volts?

YES: Go To 3
NO: Repair the (D506) LIN BUS circuit for an open. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test




3. (F937) FUSED IGNITION SWITCH OUTPUT (RUN) OPEN

Measure the voltage of the (F937) Fused Ignition Switch Output (RUN) circuit.

Q: Is the voltage above 10 volts?

YES: Go To 4
NO: Repair the (F937) Fused Ignition Switch Output (RUN) circuit for an open. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test




4. (Z908) GROUND CIRCUIT OPEN

Measure the resistance between ground and the (Z908) Ground circuit.

Q: Is the resistance below 10K ohms?

YES: Replace the Heated Seats Module. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Repair the (Z908) ground circuit for an open. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test