Control Unit Input Test
WARNING: This page is about a different car, the 2011 Honda Pilot, 2010 Honda Pilot, and 2009 Honda Pilot. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the passenger's center console trim (see CENTER CONSOLE REMOVAL/INSTALLATION ).
- 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.
WIRE AND CAVITY REFERENCE TABLECavity Wire Test condition Test: Desired result Possible cause if result is not obtained 1 BLK Under all conditions Measure the voltage to ground: There should be less than 0.2 V. - Poor ground (G403)
- An open or high resistance in the wire
15 WHT Under all conditions Measure the voltage to ground: There should be battery voltage. - Blown No. 23 (10 A) fuse in the driver's under-hood fuse/relay box
- An open in the wire
16 PUR Ignition switch ACC (I) or ON (II) Measure the voltage to ground: There should be battery voltage. - Blown No. 35 (10 A) fuse in the driver's under-dash fuse/relay box
- An open in the wire
- Disconnect the 28P 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 must be faulty, replace it (see HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION
).WIRE AND CAVITY REFERENCE TABLE
Cavity Wire color Test condition Test: Desired result Possible cause if result is not obtained 17 LT GRN Under all conditions Check for continuity between terminal No. 17 and the under-dash fuse/relay box connector T (34P) terminal No. 29: There should be continuity. An open in the wire Under-dash fuse/relay box connector T (34P) disconnected Check for continuity to ground: There should be no continuity. Short to ground 18 WHT Under all conditions Check for continuity between terminal No. 18 and the under-dash fuse/relay box connector T (34P) terminal No. 12: There should be continuity. An open in the wire Under-dash fuse/relay box connector T (34P) disconnected Check for continuity to ground: There should be no continuity. Short to ground