Diagnostic Test

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

CHECK FOR AN ACTIVE DTC
NOTE:
Check for any aftermarket equipment connected to the Brake Pedal Position Sensor wiring (I.E. Trailer Tow equipment).
1. Turn the ignition on.
2. Test drive the vehicle making several stops.
3. With the scan tool, read DTCs and record on the repair order.
  Is the DTC active or pending?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
CHECK FOR OTHER DTCS
1. Refer to the recorded DTCs.
  Are there any ABS/ICU, CAN Communication or Low Voltage DTCs present?
  
  Yes
  - Perform the applicable diagnostic procedure(s). Refer to DTC INDEX
  No
  - Go To 3
PERFORM THE BRAKE PEDAL CALIBRATION ROUTINE
1. With the scan tool, navigate to ABS Module, Misc. Functions, and perform the Brake Pedal Calibration Routine.
2. Test drive the vehicle and verify that the Brake Pedal Calibration fixed the problem.
  Did the DTC return?
  
  Yes
  - Go To 4
  No
  - Repair is complete.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
CHECK FOR HIGH RESISTANCE IN THE (D11) CAN (C+) CIRCUIT
1. Turn the ignition off.
2. Disconnect the PCM C1 harness connector.
3. Disconnect the ABS C1 harness connector.
4. Measure the resistance of the (D11) CAN (C+) circuit between the PCM harness connector and the ABS harness connector.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Repair the high resistance in the (D11)CAN (C+) circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 5
CHECK FOR HIGH RESISTANCE IN THE (D12) CAN (C-) CIRCUIT
1. Measure the resistance of the (D12) CAN (C-) circuit between the PCM harness connector and the ABS harness connector.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Go To 6
  No
  - Repair the high resistance in the (D12) (C-) circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
CHECK RELATED ABS MODULE AND PCM CONNECTIONS
1. Perform any Service Bulletins that apply.
2. Disconnect all ABS 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.
  - Check for spread terminals and verify proper terminal tension.
  Repair any conditions that are found.
6. Reconnect all ABS Module harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
7. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. Reconnect 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. Test drive or operate the vehicle in accordance with the when monitored and set conditions.
11. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Replace the ABS/ICU Module in accordance with the Service information. Refer to INTEGRATED CONTROL UNIT (ICU), REMOVAL AND INSTALLATION .
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  No
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  - Test complete.