Entry Lights Control System: Diagnosis Honda Pilot II

Control Unit Input Test

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 ).

Scheme 26

Scheme 27

1. Turn the ignition switch to LOCK (0), and remove the driver's dashboard lower cover (see «INSTRUMENT PANEL REMOVAL/INSTALLATION»(ref-333587-S31415692192009072100000) ).
2. Disconnect under-dash fuse/relay box connectors E, F, G, K, R and T. NOTE: All connector views are shown from the wire side of female terminals.
3. Inspect 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 4 .
4. Reconnect the connectors to the under-dash fuse/relay box, and do these input tests at the following connectors. 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 . TEST CONDITION TABLE Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained E6 BLK In all ignition switch positions Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G401) An open or high resistance in the in the ground wire T34 F20 BLK In all ignition switch positions Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G501) An open or high resistance in the in the ground wire G2 PNK 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-hood fuse/relay box An open or high resistance in the in the wire G3 WHT Under all conditions Measure the voltage to ground: There should be battery voltage. Blown No. 22 (10 A) fuse in the under-hood fuse/relay box Faulty under-hood fuse/relay box An open or high resistance in the in the wire R6 RED Ignition key inserted into the ignition switch Measure the voltage to ground: There should be less than 0.2 V. Faulty ignition key switch Poor ground (G401) or an open in the ground wire An open or high resistance in the wire Ignition switch in LOCK (0) position and the ignition key removed from the ignition switch Measure the voltage to ground: There should be more than 5 V. Faulty ignition key switch A short to ground in the wire Faulty MICU E37 YEL Driver's door open Measure the voltage to ground: There should be less than 0.2 V. Faulty driver's door switch Faulty driver's door switch ground An open or high resistance in the wire Driver's door closed Measure the voltage to ground: There should be more than 5 V. Faulty driver's door switch Faulty under-dash fuse relay box A short to ground in the wire E3 LT GRN Front passenger's door open Measure the voltage to ground: There should be less than 0.2 V. Faulty front passenger's door switch Faulty front passenger's door switch ground An open or high resistance in the wire Front passenger's door closed Measure the voltage to ground: There should at least 5 V. Faulty front passenger's door switch Faulty under-dash fuse relay box A short to ground in the wire E17 LT BLU Left rear door open Measure the voltage to ground: There should be less than 0.2V. Faulty left rear door switch Faulty front passenger's door switch ground An open or high resistance in the wire Left rear door closed Measure the voltage to ground: There should be at least 5 V. Faulty left rear door switch Faulty under-dash fuse/relay box A short to ground in the wire E2 GRY Right rear door open Measure the voltage to ground: There should be less than 0.2 V. Faulty right rear door switch Faulty right rear door switch ground An open or high resistance in the wire Right rear door closed Measure the voltage to ground: There should be at least 5 V. Faulty right rear door switch Faulty under-dash fuse/relay box A short to ground in the wire E36 (1) LT GRN Tailgate open Measure the voltage to ground: There should be less than 0.2 V. Faulty tailgate latch switch Poor ground (G601) or an open in the ground wire An open in the wire Tailgate closed Measure the voltage to ground: There should be at least 5 V. Faulty tailgate latch switch A short to ground in the wire R10 WHT Under all conditions Measure the voltage to ground: There should be battery voltage. Faulty under-dash fuse/relay box K5 K4 PNK Interior light switch in the DOOR position Connect a jumper wire to ground: The individual map lights and ignition key light should come on. Faulty under-dash fuse/relay box Faulty interior light switch Faulty map lights Faulty ignition key switch Blown bulb(s) An open or high resistance in the wire (1) Without power tailgate Door Multiplex Control Unit
5. Turn the ignition switch to LOCK (0), and remove the power window master switch (see «REAR POWER WINDOW SWITCH TEST/REPLACEMENT»(ref-333619-S40754466402009072100000) ).
6. Disconnect the 37P connector from the power window master switch.
7. Inspect 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 8 .
8. Reconnect the 37P connector to the power window master switch, and do these input tests at the following 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 9 . TEST CONDITION TABLE Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained 32 BLK Under all conditions Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G401) An open or high resistance in the wire 37 13 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 in the wire 30 BRN Driver's door lock knob switch in LOCK Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G401) or open in the ground wire Faulty driver's door lock knob switch An open or high resistance in the wire Driver's door lock knob switch in UNLOCK Measure the voltage to ground: There should be at least 5 V. Faulty driver's door lock knob switch A short to ground in the wire Faulty power window master switch 31 RED Driver's door lock knob switch in UNLOCK Measure the voltage to ground: There should be less than 2.0 V. Poor ground (G401) or an open in the ground wire. Faulty driver's door lock knob switch An open or high resistance in the wire Driver's door lock knob switch in LOCK Measure the voltage to ground: There should be at least 5 V. Faulty driver's door lock knob switch Faulty power window master switch A short to ground in the wire
9. If multiple failures are found on more than one control unit, replace the under-dash fuse/relay box (includes the MICU) (see «REMOVAL AND INSTALLATION»(ref-333607-S23852302332009072100000) ). If input failures are related to a particular control unit, replace the control unit.

Ignition Key Switch Test

Note. SRS components are located in this area. Review the SRS component locations (see COMPONENT LOCATION INDEX and precautions and procedures (see PRECAUTIONS AND PROCEDURES before doing repair or servicing.

Scheme 28

1. Remove the steering column upper and lower covers (see «PASSENGER'S DASHBOARD TRIM VENT»(ref-333587-S24317850142009072100000) ).
2. Disconnect the 6P connector (A).
3. Check for continuity between terminals No. 1 and No. 2. There should be continuity with the key in the ignition switch. There should be no continuity with the key removed.
4. If the continuity is not as specified, replace the steering lock assembly (see «STEERING LOCK REPLACEMENT»(ref-333571-S10074698282009072100000) .

Ignition Key Light Test

Note. SRS components are located in this area. Review the SRS component locations (see COMPONENT LOCATION INDEX and precautions and procedures (see PRECAUTIONS AND PROCEDURES before doing repair or servicing.

Scheme 29

1. Remove the steering column upper and lower covers (see «PASSENGER'S DASHBOARD TRIM VENT»(ref-333587-S24317850142009072100000) ).
2. Disconnect the 6P connector (A).
3. The LED should come on when power is connected to terminal No. 6 and ground is connected to terminal No. 5.
4. If the LED does not come on, replace the steering lock assembly (see «STEERING LOCK REPLACEMENT»(ref-333571-S10074698282009072100000) .