Control Unit Input Test/Replacement
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.
NOTE:
Before testing, troubleshoot the multiplex integrated control unit first, using B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A
).
- Turn the ignition switch to LOCK (0).
- Remove the left D pillar trim (see TRIM REMOVAL/INSTALLATION - PILLAR AREAS ).
- Disconnect the 20P, 14P, and 5P connectors (A) from the power tailgate control unit (B).
- Inspect all the connector and socket terminals 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 5.
- With the connectors still disconnected, do these input tests.
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If the input tests prove OK, go to step 6.WIRE CONDITION TABLE
Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained B3 ORN Under all conditions Connect terminal B11 to terminal B3 with a jumper wire:
The power tailgate outside beeper should sound.- Blown No. 23 (10 A) fuse in the under-hood fuse/relay box
- Faulty power tailgate outside beeper
- An open in the wire
- Poor ground (G503) or an open in the ground wire
B4 RED Under all conditions Connect terminal B11 to terminal B4 with a jumper wire:
The power tailgate inside beeper should sound.- Blown No. 23 (10 A) fuse in the under-hood fuse/relay box
- Faulty power tailgate inside beeper
- An open or high resistance in the wire
- Poor ground (G601) or an open in the ground wire
- Reconnect all connectors to the power tailgate control unit, and do the following input tests.
- If the test indicates a problem, find and correct the cause, then recheck the system.
- If the input test proves OK, replace the power tailgate control unit.
WIRE CONDITION TABLECavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained A2 BRN Under all conditions Measure the voltage to ground:
There should be battery voltage.- Blown No. 1 (40 A) fuse in the auxiliary under-hood fuse/relay box
- An open or high resistance in the wire
B12 PNK Under all conditions Measure the voltage to ground:
There should be battery voltage.- Blown No. 8 (20 A) fuse in the auxiliary under-hood fuse/relay box
- An open or high resistance in the wire
B11 WHT Under all conditions Measure the voltage to ground:
There should be battery voltage.- Blown No. 23 (10 A) fuse in the under-hood fuse/relay box
- Faulty under-dash fuse/relay box
- An open or high resistance in the wire
C14 YEL Ignition switch ON (ID Measure the voltage to ground:
There should be battery voltage.- Blown No. 10 (7.5 A) fuse in the under-dash fuse/relay box
- Faulty under-dash fuse/relay box
- An open or high resistance in the wire
A1 BLK In all ignition switch positions Measure the voltage to ground:
There should be less than 0.2 V.- Poor ground (G602)
- An open or high resistance in the wire
A4 B19 BLK In all ignition switch positions Measure the voltage to ground:
There should be less than 0.2 V.- Poor ground (G503)
- An open or high resistance in the ground wire
B8 PNK Shift lever in P position Measure the voltage to ground:
There should be less than 0.2 V.- Faulty transmission range switch
- Poor ground (G101) or an open in the ground wire
- An open or high resistance in the wire