U0161-LOST COMMUNICATION WITH COMPASS MODULE

For a complete wiring diagram, refer to the Wiring Information.

When Monitored:
With the ignition on.
Set Condition:
The Cluster does not receive information from the Compass Module.

Possible Causes
(D506) LIN BUS CIRCUIT OPEN
(F921) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT OPEN
(Z916) GROUND CIRCUIT OPEN
COMPASS MODULE
INSTRUMENT CLUSTER

1. CHECK FOR AN ACTIVE DTC

NOTE: Remove any electronic devices (laptop computers, cell phones) from the instrument panel.

NOTE: Before proceeding, check the compass variance and calibration in accordance with the Service Information.

1.	Turn the ignition on.

2.	With the scan tool, record and erase DTCs.

3.	Wait 30 seconds.

4.	With the scan tool, read DTCs.

Does the scan tool display this DTC as active?

Yes

Go To 2

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 chafed, 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. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure)

2. (D506) LIN BUS CIRCUIT

1.	Turn the ignition off.

2.	Disconnect the Compass Module harness connector.

3.	Turn the ignition on.

4.	Measure the voltage of the (D506) LIN BUS circuit.

Is the voltage above 5 volts?

Yes

Go To 4

Go To 3

3. (D506) LIN BUS CIRCUIT OPEN

1.	Turn the ignition off.

2.	Disconnect the Instrument Cluster C2 harness connector.

3.	Measure the resistance of the (D506) LIN BUS circuit.

Is the resistance below 10K ohms?

Yes

Replace the Cluster in accordance with the Service Information.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure)

Repair the (D506) LIN BUS circuit for an open.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure)

4. (F921) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT OPEN

1.	Turn the ignition on.

2.	Using a 12-volt test light connected to ground, check the (F921) Fused Ignition Switch Output (RUN) circuit at the Compass Module harness connector.

Does the test light illuminate brightly?

Yes

Go To 5

Repair the (F921) Fused Ignition Switch Output (RUN) circuit for an open.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure)

5. (Z916) GROUND CIRCUIT OPEN

1.	Turn the ignition off.

2.	Using a 12-volt test light connected to 12-volts, check the (Z916) Ground circuit at the Compass Module harness connector.

Does the test light illuminate brightly?

Yes

Replace the Compass Module in accordance with the Service Information.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure)

Repair the (Z916) ground circuit for an open.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure)

U0161-LOST COMMUNICATION WITH COMPASS MODULE

U0161-LOST COMMUNICATION WITH COMPASS MODULE

Possible Causes