Control Unit Input Test
- Remove the HandsFreeLink control unit (see HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION ).
- Inspect the connector (A) and socket (B) 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 3.
- 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 4.
Cavity Wire Color Test Condition Test: Desired Result Possible Cause if Desired Result is not Obtained 1 BLK Under all conditions Measure the voltage to body ground: There should be less than 0.2 V. - Poor ground (G501)
- An open or high resistance 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 ACCESSORY (I) or ON (II), or the engine start/stop button to ACC mode or ON mode 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 and check for B-CAN related DTCs, then recheck the system.
- If the input test proves OK, the HandsFreeLink control unit is faulty, replace it.
Cavity Wire Color Test Condition Test: Desired Result Possible Cause if Desired Result is not Obtained 17 BLU Passenger's under-dash fuse/relay box connector D (28P) disconnected Check for continuity between terminal No. 17 and passenger's under-dash fuse/relay box connector D(28P) terminal No. 8: There should be continuity. An open in the wire Passenger's under-dash fuse/relay box connector D (28P) and climate control unit connector C (20P) disconnected Check for continuity to body ground: There should be no continuity. Short to body ground in the wire 18 PNK Passenger's under-dash fuse/relay box connector D (28P) disconnected Check for continuity between terminal No. 18 and passenger's under-dash fuse/relay box connector D (28P) terminal No. 7: There should be continuity. An open in the wire Passenger's under-dash fuse/relay box connector D (28P) and climate control unit connector C (20P) disconnected Check for continuity to body ground: There should be no continuity. Short to body ground in the wire