B2143

B2143-UGDO ENABLE CONTROL CIRCUIT

B2143 - UGDO Enable Control Circuit:

WHEN MONITORED
With the ignition on.

SET CONDITION
The Cluster detects a fault on the (G38) UGDO Enable Control Circuit.

POSSIBLE CAUSES
- (G38) UGDO enable control circuit short to voltage
- (G38) UGDO enable control circuit short to ground
- (G38) UGDO enable control circuit open
- Instrument cluster

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: B2143-UGDO ENABLE CONTROL CIRCUIT?

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. (G38) UGDO ENABLE CONTROL CIRCUIT SHORT TO VOLTAGE

Turn the ignition off.
Disconnect the Instrument Cluster C2 harness connector.
Disconnect the Left Vanity Lamp Harness connector.
Turn the ignition on.
Measure the voltage of the (G38) UGDO Enable Control Circuit.

Q: Is voltage present?

YES: Repair the (G38) UGDO Enable Control Circuit for a short to voltage. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 3




3. (G38) UGDO ENABLE CONTROL CIRCUIT SHORT TO GROUND

Measure the resistance between ground and the (G38) UGDO Enable Control Circuit.

Q: Is the resistance below 10K ohms?

YES: Repair the (G38) UGDO Enable Control Circuit for a short to ground. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 4




4. (G38) UGDO ENABLE CONTROL CIRCUIT OPEN

Measure the resistance of the (G38) UGDO Enable Control Circuit.

Q: Is the resistance above 10K ohms?

YES: Repair the (G38) UGDO Enable Control Circuit for an open. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Replace the Instrument Cluster. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test