Diagnostic Test

CHECK FOR AN ACTIVE DTC
NOTE:
This DTC must be active for the results of this test to be valid.
1. Turn the ignition on.
2. With the scan tool, read DTCs and record on vehicle work order.
3. With the scan tool, erase DTCs.
4. Cycle the ignition switch from off to on.
5. With the scan tool, read EPS DTCs.
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - Perform the ABS INTERMITTENT CONDITION TEST. Refer to: ABS INTERMITTENT CONDITION .
CHECK FOR TRANSMISSION CONTROL MODULE (TCM) DTCS
1. With the scan tool, read TCM DTCs.
  Are there any TCM DTCs present?
  
  Yes
  - Refer to: 3.6L - DIAGNOSTIC CODE INDEX , 5.7L - DIAGNOSTIC CODE INDEX , 6.2L - DIAGNOSTIC CODE INDEX or 6.4L - DIAGNOSTIC CODE INDEX and perform the appropriate diagnostic procedure.
  No
  - Go To 3
CHECK OTHER MODULES FOR CAN C BUS DTCS
1. With the scan tool, read the DTCs.
  Are there any CAN C BUS DTCs present?
  
  Yes
  - Using the schematics as a guide, check the Transmission Control Module (TCM) pins, terminals, and connectors for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the Transmission Control Module (TCM) in accordance with the Service Information. Refer to MODULE, TRANSMISSION CONTROL (TCM), REMOVAL and MODULE, TRANSMISSION CONTROL (TCM), INSTALLATION .
  No
  - Using the schematics as a guide, check the Electric Power Steering (EPS) Module pins, terminals, and connectors for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the Electric Power Steering (EPS) Module in accordance with the Service Information. Refer to GEAR, REMOVAL and GEAR, INSTALLATION .
  - Perform the EPS Verification Test. Refer to: EPS VERIFICATION TEST .