Control Unit Input Test
- Remove the passenger's dashboard undercover (see PASSENGER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION ).
- Remove the HandsFreeLink™ control unit (A) (see step 2 on ).
- Inspect the connector (B) 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.
INPUT TEST REFERENCE CHARTCavity Wire Color Test Condition Test: Desired Result Possible Cause if Desired Result is not Obtained 1 BLK Under all conditions Measure the voltage to ground: There should be less than 0.2 V. - Poor ground (G401)
- An open in the wire
15 WHT Under all conditions Measure the voltage to 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 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 connector again, and do 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 (see HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION ).
INPUT TEST REFERENCE CHARTCavity Wire Color Test Condition Test: Desired Result Possible Cause if Desired Result is not Obtained 17 BLU Under all conditions - With navigation: Check for continuity between terminal No. 17 and the audio-navigation unit connector D (20P) terminal No. 15; there should be continuity.
- Without navigation: Check for continuity between terminal No. 17 and the audio unit connector B (20P) terminal No. 8; there should be continuity.
An open in the wire 18 PNK Under all conditions - With navigation: Check for continuity between terminal No. 18 and the audio-navigation unit connector D (20P) terminal No. 6; there should be continuity.
- Without navigation: Check for continuity between terminal No. 18 and the audio unit connector B (20P) terminal No. 18; there should be continuity.
An open in the wire