Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.

NOTE:

Please first be sure to review the Diagnostic Aids before continuing further.

Ignition - On/Vehicle - In Service Mode & Engine - Off
Verify DTC P0502, P0503, P0721, P0722, P0723, P077C, P077D, P2160, or P2161 is not set.
- If any of the DTCs are set Refer to:Diagnostic Trouble Code (DTC) List - Vehicle
- If none of the DTCs are set
Ignition On - Engine Running - Greater than 1 min
Ignition Off for greater than 2 min, key out of the ignition/keyless start transmitter 1 m (3 ft) from the vehicle, and all vehicle systems Off.
Ignition On/Vehicle In Service Mode
Verify DTC P17D4, P185F, P279A, P279B, P279C is only set as a history DTC.
- If any of the DTCs are set as current. Refer to: Circuit/System Testing
- If any of the DTCs are only set as history. Refer to Diagnostic Aids.
- If none of the DTCs are set
Clear All Vehicle DTCs
Drive the vehicle at a speed greater than 10 km/h (6 mph) and verify the following parameters match the actual vehicle speed and each other. Both parameters should show a smooth/steady curve when viewed in graph form:
- Transmission OSS scan tool parameter in the Transmission Control Module scan tool data list
- Transfer Case OSS scan tool parameter in the Engine Control Module scan tool data list
- If the above parameters do not match or are not smooth
  A fault exists with the B14S Transmission Output Shaft Speed Sensor or the B115 Vehicle Speed Sensor. Refer to: Diagnostic Trouble Code (DTC) List - Vehicle
- If the above parameters match and are smooth
All OK.