Diagnostic Test

1. Check for any applicable Service Bulletins or Flash updates related to the DTC.

   Are there any applicable Service Bulletins or Flash updates?

   Yes 

   • Make the applicable repair.
   • Perform the CENTRAL ADAS DECISION MODULE 2 (CADM2) VERIFICATION TEST. Refer to CENTRAL ADAS DECISION MODULE 2 (CADM2) VERIFICATION TEST .

   No 

   • Go To  2

1. With the scan tool, read DTCs in all Electronic Control Units (ECUs) and record on the repair order.
2. For future reference, with the scan tool, run and save a vehicle Scan Report and all related recorded data.
3. With the scan tool, erase all DTCs.
4. Turn the ignition off for a minimum of 10.0 seconds.
5. Turn the ignition on.
6. Using the When Monitored and Set Conditions above and recorded data, operate the vehicle in the conditions that set the DTC.
7. With the scan tool, read DTCs.

Did the DTC return?

Yes 

• Go To  3

No 

• Perform the TESTING FOR AN INTERMITTENT CONDITION procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .

1. Turn to the recorded DTCs.

   Are there any PCM battery OR charging system DTCs present?

   Yes 

   • Perform the applicable diagnostic procedure(s). Refer to: DTC INDEX (1 OF 3) and/or DTC INDEX (2 OF 3) and/or DTC INDEX (3 OF 3) .

   No 

   • Go To  4

1. Turn the ignition off.
   NOTE:

   Most common areas of concern are the CADM2, fascia in-line, and Radar connections.

2. Check the harness connectors for proper connection at the CADM2, fascia in-line connection, and the Radar connection.
3. Verify that the connector is completely plugged in and locked prior to disconnecting.
4. Disconnect the CADM2, fascia in-line connection, and the Radar harness connectors and check for pushed out or spread terminals, brinelling on terminals, discoloration from excessive heat, or corrosion and water intrusion.

   Were any issues found with the connectors or terminals?

   Yes 

   • Repair the found issues in accordance with the Service Information.
   • Perform the CENTRAL ADAS DECISION MODULE 2 (CADM2) VERIFICATION TEST. Refer to CENTRAL ADAS DECISION MODULE 2 (CADM2) VERIFICATION TEST .

   No 

   • Go To  5

1. The ignition must be off when checking the continuity of a circuit.
2. Isolate the circuit by disconnecting the Electronic Control Unit (ECU) and the component harness connector containing the circuit being tested. Note:  Use the appropriate SYSTEM WIRING DIAGRAM as a guide to follow the path of the circuit.
3. Before measuring the resistance of any circuit, first measure the resistance between the two leads of the DVOM. Note:  The meter leads can add resistance to the measurement value.
4. Connect one lead of the DVOM to the circuit being tested at the component harness connector.
5. Connect the other lead to the circuit being tested at the CADM22 harness connector and measure the resistance of the circuit.

Is the resistance below 3.0 Ohms?

Yes 

• Go To  6

No 

• Repair the circuit for an open or high resistance.
• Perform the CENTRAL ADAS DECISION MODULE 2 (CADM2) VERIFICATION TEST. Refer to CENTRAL ADAS DECISION MODULE 2 (CADM2) VERIFICATION TEST .

1. The ignition must be off when checking the continuity of a circuit.
2. Isolate the circuit by disconnecting the Electronic Control Unit (ECU) and the component harness connector containing the circuit being tested. Note:  Use the appropriate SYSTEM WIRING DIAGRAM as a guide to follow the path of the circuit.
3. Before measuring the resistance of any circuit, first measure the resistance between the two leads of the DVOM. Note:  The meter leads can add resistance to the measurement value.
4. Connect one lead of the DVOM to the circuit being tested at the component harness connector.
5. Connect the other lead to the circuit being tested at the CADM22 harness connector and measure the resistance of the circuit.

Is the resistance below 3.0 Ohms?

Yes 

• Go To  7

No 

• Repair the circuit for an open or high resistance.
• Perform the CENTRAL ADAS DECISION MODULE 2 (CADM2) VERIFICATION TEST. Refer to CENTRAL ADAS DECISION MODULE 2 (CADM2) VERIFICATION TEST .

1. Turn the ignition off.
2. Replace the Radar in accordance with the Service Information. Refer to RADARS, REMOVAL AND INSTALLATION .
3. Connect the component and Electronic Control Unit (ECU) harness connectors.
4. Turn the ignition on.
5. With the scan tool, erase all DTCs.
6. Turn the ignition off for a minimum of 10.0 seconds.
7. Turn the ignition on.
8. Using the When Monitored and Set Conditions above and recorded data, operate the vehicle in the conditions that set the DTC.
9. With the scan tool, read DTCs.

Did the DTC return?

Yes 

• Go To  8

No 

• Replacing the Radar repaired the fault.
• Perform the CENTRAL ADAS DECISION MODULE 2 (CADM2) VERIFICATION TEST. Refer to CENTRAL ADAS DECISION MODULE 2 (CADM2) VERIFICATION TEST .

1. Disconnect all CADM22 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 CADM22 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 DTCs.

    Did the DTC return?

    Yes 

    • Replace and program the Central ADAS Decision Module (CADM) in accordance with the Service Information. Refer to MODULES, REMOVAL AND INSTALLATION .
    • Perform the CENTRAL ADAS DECISION MODULE 2 (CADM2) VERIFICATION TEST. Refer to CENTRAL ADAS DECISION MODULE 2 (CADM2) VERIFICATION TEST .

    No 

    • The wiring or poor connection has been repaired.
    • Perform the CENTRAL ADAS DECISION MODULE 2 (CADM2) VERIFICATION TEST. Refer to CENTRAL ADAS DECISION MODULE 2 (CADM2) VERIFICATION TEST .