U113B

U113B-LOST COMMUNICATION WITH SWITCH BANK MODULE






For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
With the ignition on.

- Set Condition:
The Cluster does not receive information from the Switch Bank 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.

Does the scan tool display this DTC as active?

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 chafed, pierced, pinched, and partially broken wires. Also inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals.
- Perform BODY VERIFICATION TEST, refer to Body Verification Test

2. (D506) LIN BUS CIRCUIT

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

Is the voltage above 5 volts?

Yes

- Go to 4

No

- Go to 3

3. (D506) LIN BUS CIRCUIT OPEN






Turn the ignition off.
Disconnect the Cluster C2 harness connector.
Measure the resistance of the (D506) LIN BUS circuit.

Is the resistance below 5.0 ohms?

Yes

- Replace the Cluster.
- Perform BODY VERIFICATION TEST, refer to Body Verification Test

No

- Repair the (D506) LIN BUS circuit for an open.
- Perform BODY VERIFICATION TEST, refer to Body Verification Test

4. (A108) FUSED B+ CIRCUIT OPEN






Using a 12-volt test light connected to ground, check the (A108) Fused B+ circuit at the Switch Bank Module harness connector.

Does the test light illuminate brightly?

Yes

- Go to 5


No

- Repair the (A108) Fused B+ circuit for an open.
- Perform BODY VERIFICATION TEST, refer to Body Verification Test


5. (Z910) GROUND CIRCUIT OPEN






Turn the ignition off.
Using a 12-volt test light connected to 12-volts, check the (Z910) Ground circuit at the Switch Bank Module harness connector.

Does the test light illuminate brightly?

Yes

- Replace the Switch Bank Module.
- Perform BODY VERIFICATION TEST, refer to Body Verification Test
No

- Repair the (Z910) ground circuit for an open.
- Perform BODY VERIFICATION TEST, refer to Body Verification Test