Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, create a Vehicle Scan Report and attach it to the repair order.
3. With the scan tool, read the Park Assist Module (PAM) DTCs.
  Is the DTC active?
  
  Yes
  - Go to 2.
  No
  - Perform the TESTING FOR AN INTERMITTENT CONDITION procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
CHECK THE (D701) PARK ASSIST SIGNAL 8 CIRCUIT FOR A SHORT TO THE (X700) REAR PARK ASSIST SENSOR SUPPLY CIRCUIT
1. Turn the ignition off.
2. Check for continuity between the (D701) Park Assist Signal 8 circuit and the (X700) Rear Park Assist Sensor Supply circuit at the PAM connector.
  Is there continuity between the (D701) Park Assist Signal 8 circuit and the (X700) Rear Park Assist Sensor Supply circuit ?
  
  Yes
  - Repair the (D701) Park Assist Signal 8 circuit and the (X700) Rear Park Assist Sensor Supply circuit for a short.
  No
  - Go to 3.
CHECK THE (X750) REAR PARK ASSIST SENSOR GROUND CIRCUIT FOR AN OPEN OR HIGH RESISTANCE
1. Measure the resistance of the (X750) Rear Park Assist Sensor Ground circuit at the PAM connector.
  Is the resistance above 3.0 ohms?
  
  Yes
  - Repair the (X750) Rear Park Assist Sensor Ground circuit for an open or high resistance.
  No
  - Go to 4.
CHECK THE (D701) PARK ASSIST SIGNAL 8 CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition on.
2. Measure the voltage between ground and the (D701) Park Assist Signal 8 circuit at the PAM connector.
  Is there any voltage present?
  
  Yes
  - Repair the (D701) Park Assist Signal 8 circuit for a short to voltage.
  No
  - Go to 5.
CHECK THE PARK ASSIST SENSOR
1. Replace the Park Assist Sensor in accordance with Service Information. Refer to SENSOR, PARK ASSIST, REMOVAL AND INSTALLATION .
2. With the scan tool, erase all DTCs.
3. Cycle the ignition.
4. With the scan tool, read the Park Assist Module (PAM) DTCs.
  Did the DTC return?
  
  Yes
  - Go to 6.
  No
  - Test Complete.
  - Perform the Body VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK RELATED HARNESS CONNECTIONS
1. Disconnect all PAM Module harness connectors.
2. Disconnect all related in-line harness connections (if equipped).
3. Disconnect the related component harness connectors.
4. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
  - Proper connector installation.
  - Damaged connector locks.
  - Corrosion.
  - Other signs of water intrusion.
  - Weather seal damage (if equipped).
  - Bent terminals.
  - Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
  - Terminals that have been pushed back into the connector cavity.
  - Perform a terminal drag test on each connector terminal to verify proper terminal tension.
  Repair any conditions that are found.
5. Reconnect all PAM Module harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
6. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
7. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. With the scan tool, erase DTCs.
9. Using the recorded Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
10. With the scan tool, read PAM Module DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Park Assist Module in accordance with the Service information. Refer to MODULE, PARK ASSIST (PAM), REMOVAL AND INSTALLATION .
  - Perform the Body VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Perform the Body VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  - Test complete.