Diagnostic Test

WARNING: This page is about a different car, the 2020 Jeep Renegade. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN ACTIVE DTC
1. With the scan tool, read Adaptive Cruise Control (ACC) Module DTCs and record on the repair order.
2. Record the DTC Environmental Data.
3. With the scan tool, erase ACC Module DTCs.
4. Turn the ignition off.
5. Start the engine.
6. With the scan tool, read ACC Module DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - Perform the TESTING FOR AN INTERMITTENT CONDITION. Refer to TESTING FOR AN INTERMITTENT CONDITION .
CHECK FOR ANTI-LOCK BRAKE SYSTEM (ABS) MODULE DTCS
1. With the scan tool, read ABS Module DTCs and record on the repair order.
  Are there any ABS Module DTCs present?
  
  Yes
  - Repair the ABS DTC(s). Refer to DIAGNOSTIC CODE INDEX .
  No
  - Go To 3
CHECK FOR ELECTRIC POWER STEERING (EPS) MODULE DTCS
1. With the scan tool, read EPS Module DTCs and record on the repair order.
  Are there any EPS Module DTCs present?
  
  Yes
  - Repair the EPS DTC(s). Refer to DIAGNOSTIC CODE INDEX .
  No
  - Go To 4
CHECK STEERING COLUMN CONTROL MODULE (SCCM) TERMINALS/CONNECTORS/WIRING HARNESS FOR DAMAGE
WARNING:
To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, seat belt tensioner, impact sensor, or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to take the proper precautions could result in accidental airbag deployment.

NOTE:
Proper Steering Angle Sensor (SAS) installation is crucial for proper operation.
1. Inspect the Steering Angle Sensor (SAS).
2. Check all related wiring for bruised, chafed, pierced, or partially broken wires.
3. Check all related connectors for broken, bent, pushed out, or corroded terminals.
  Were any problems found?
  
  Yes
  - Replace the Steering Angle Sensor (SAS) in accordance with service information. Refer to CLOCKSPRING, REMOVAL AND INSTALLATION .
  - Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Refer to ADAPTIVE CRUISE CONTROL (ACC) VERIFICATION TEST .
  No
  - Go To 5
CHECK RELATED HARNESS CONNECTIONS
1. Turn the ignition off.
2. Disconnect all Steering Adaptive Cruise Control (ACC) Module harness connectors.
3. Disconnect all related in-line harness connections (if equipped).
4. Disconnect the related component harness connectors.
5. 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.
6. Connect all ACC harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
7. Connect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. Connect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
9. With the scan tool, erase DTCs.
10. Using the recorded Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
11. With the scan tool, read ACC Module DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Adaptive Cruise Control (ACC) Module in accordance with the Service Information. Refer to MODULE, ADAPTIVE CRUISE CONTROL (ACC), REMOVAL AND INSTALLATION .
  - Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Refer to ADAPTIVE CRUISE CONTROL (ACC) VERIFICATION TEST .
  No
  - The wiring or poor connection problem has been repaired.
  - Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Refer to ADAPTIVE CRUISE CONTROL (ACC) VERIFICATION TEST .