Diagnostic Test

CHECK FOR AN ACTIVE DTC
NOTE:
This vehicle has a Front Tweeter wired in parallel with the Front Speaker.
1. Turn the ignition on and open one of the front doors.
  NOTE:
  A front door must remain open whenever checking or erasing Radio DTCs.
2. With the scan tool, read Radio DTCs and record on the repair order.
3. Cycle the ignition from on to off, wait five seconds and then back to on.
4. Turn the radio on and set the volume to 25.
5. Adjust the speakers to the front and center.
6. With the scan tool, read Radio DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - Perform the TESTING FOR AN INTERMITTENT CONDITION procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
CHECK THE DRIVER FRONT DOOR SPEAKER
1. Turn the ignition off.
2. Disconnect the Speaker harness connector.
3. Turn the ignition on.
4. Turn the Radio on and set the volume to 25.
5. Adjust the speakers to the front and center.
6. With a voltmeter set to read in A/C voltage, measure the voltage of the Speaker circuits at the Speaker harness connector.
  Is the voltage present greater than 1.0 volt?
  
  Yes
  - Replace the Drivers Front Door Speaker in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 3
CHECK THE (X153) DRIVER FRONT DOOR SPEAKER (+) CIRCUIT FOR AN OPEN
1. Turn the ignition off.
2. Disconnect the Radio harness C1 connector.
3. Measure the resistance of the (X153) Drivers Front Door Speaker (+) circuit between the Radio C1 harness connector and the Drivers Front Door Speaker harness connector.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Go To 4
  No
  - Repair the (X153) Drivers Front Door Speaker (+) circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (X155) DRIVER FRONT DOOR SPEAKER (-) CIRCUIT FOR AN OPEN
1. Measure the resistance of the (X155) Drivers Front Door Speaker (-) circuit between the Radio harness C1 connector and the Drivers Front Door Speaker harness connector.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Go To 5
  No
  - Repair the (X155) Drivers Front Door Speaker (-) circuit for an open.
  - Perform the BODY VERIFICATION TEST
CHECK RELATED HARNESS CONNECTIONS
1. Disconnect all Radio 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 Radio 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 Radio DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Radio in accordance with the Service information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  - Test complete.