P0853

P0853-OVERDRIVE/TOW SWITCH INPUT CIRCUIT STUCK





For a complete wiring diagram Refer to Diagrams/Electrical.








Diagnostic Test


1. CHECK FOR AN ACTIVE DTC
Turn the ignition on.
With the scan tool, record and erase DTCs.
Wait 30 seconds.
Press the TOW/HAUL switch 3 times.
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 - VER 1. Body Verification Test




2. SHIFT LEVER ASSEMBLY
Disconnect the Shift Lever Assembly harness connector.
With the scan tool, read DTCs.
Does the scan tool display the DTC as active?

Yes


- Go To 3


No


- Replace the Shift Lever Assembly.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test




3. (T6) TOW/HAUL OD OFF SIGNAL SHORTED TO GROUND
Turn the ignition off.
Disconnect the Cluster C3 harness connector.
Measure the resistance between ground and the (T6) TOW/HAUL OD OFF signal circuit at the Cluster C3 harness connector.
Is the resistance below 10K ohms?

Yes


- Repair the (T6) TOW/HAUL OD OFF Signal Circuit for a short to ground.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test


No


- Replace the Cluster.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test