Control Unit Input Test/Replacement
- Remove the driver's dashboard lower cover (see DRIVER'S DASHBOARD LOWER COVER REMOVAL/INSTALLATION ).
- Remove the screws, then disconnect the 28P connector (A) from the HandsFreeLink control unit (B).
- Inspect the connector and socket terminals for a good pinfit to be sure they are all making good contact.
- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
- If the terminals look OK, go to step 4.
- Reconnect the connector, and make these input tests at the connector.
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, go to step 5.
TROUBLE SYMPTOMS CHARTCavity Wire Color Test Condition Test: Desired Result Possible Cause if Result is not Obtained 1 BRN Under all conditions Measure the voltage to body ground: There should be less than 0.2 V. - Poor ground (G501) (see DASHBOARD WIRE HARNESS (VIEW OF DRIVER'S SIDE) )
- An open in the wire
15 WHT Under all conditions Measure the voltage to body ground: There should be battery voltage. - Blown No. 15 (10 A) fuse in the under-hood fuse/relay box
- An open in the wire
16 PUR Ignition switch in ACC (I) or ON (II) Measure the voltage to body ground: There should be battery voltage. - Blown No. 18 (7.5 A) fuse in the driver's under-dash fuse/relay box
- An open in the wire
- Disconnect the 28P connector again, and make this input test at the connector.
- If the test indicates a problem, find and correct the cause, then recheck the system.
- If the input test proves OK, the HandsFreeLink control unit is faulty, replace it.
TROUBLE SYMPTOMS CHARTCavity Wire Color Test Condition Test: Desired Result Possible Cause if Result is not Obtained 17 BLU Audio unit connector B (20P) disconnected Check for continuity between terminal No. 17 and audio unit connector B (20P) terminal No. 8: There should be continuity. An open in the wire 18 PNK Audio unit connector B (20P) disconnected Check for continuity between terminal No. 18 and audio unit connector B (20P) terminal No. 18: There should be continuity. An open in the wire