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Entry Lights Control System Honda Pilot I

Interior/illumination Lights 7 illustrations ~1505 words

Scheme 19

Scheme 19: Component Location Index
Scheme 19: Component Location Index

Scheme 20

Scheme 20: Circuit Diagram
Scheme 20: Circuit Diagram

Ignition Key Switch Test

Note. For more key-in beeper information, refer to the Circuit Diagram (see CIRCUIT DIAGRAM ) and INPUT TEST (see ).

When the ignition key is in the ignition switch, the key-in beeper in the driver's multiplex control unit senses ground through the closed ignition key switch. When you open the driver's door, the beeper circuit senses ground through the closed door switch.

Scheme 21

Scheme 21: Ignition Key Switch Test
Scheme 21: Ignition Key Switch Test
  1. Remove the steering column upper and lower covers (see «STEERING COLUMN REMOVAL AND INSTALLATION»(ref-298123-S27395915732008091500000) ).
  2. Disconnect the 7P connector. NOTE: Lock tab (A) points down when installed.
  3. Check for continuity between the No. 1 and No. 3 terminals. 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 ignition key switch.

Scheme 22

Scheme 22: Ignition Key Light Test
Scheme 22: Ignition Key Light Test
  1. Remove the steering column upper and lower covers (see «STEERING COLUMN REMOVAL AND INSTALLATION»(ref-298123-S27395915732008091500000) ).
  2. Disconnect the 7P connector. NOTE: Lock tab (A) points down when installed.
  3. The LED should come on when power is connected to the No. 7 terminal and ground is connected to No. 6 terminal.
  4. If the LED does not come on, replace the ignition key switch.

Scheme 23

Scheme 23: Control Circuit Input Test
Scheme 23: Control Circuit Input Test

Scheme 24

Scheme 24
Scheme 24

Scheme 25

Scheme 25
Scheme 25
  1. Before testing the entry light control functions, troubleshoot the multiplex control system (see «TROUBLESHOOTING»(ref-243369-S38123892792006082300000) ). Driver's Multiplex Control Unit
  2. Remove the driver's multiplex control unit from the driver's under-dash fuse/relay box.
  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. With the driver's multiplex control unit still disconnected, make these input tests at the connector or driver's under-dash fuse/relay box socket. 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. REFERENCE CHART (DRIVER'S MULTIPLEX CONTROL UNIT DISCONNECTED) Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained A1 Fuse/relay box socket Under all conditions Attach to ground: The ignition key light should come on. Blown No. 47 (20 A) fuse in the under-hood fuse/relay box Blown LED An open in the wire A24 Ignition switch ON (II) Check for voltage to ground: There should be battery voltage. Blown No. 9 (10 A) fuse in the driver's under-dash fuse/relay box Faulty driver's under-dash fuse/relay box A6 Fuse/relay box socket Combination light switch ON Check for voltage to ground: There should be battery voltage and jump 12V to driver's multiplex connector B16 (EX). Blown No. 54 (40 A) fuse in the under-hood fuse/relay box Blown No. 10 (15 A) fuse in the passenger's under-dash fuse/relay box Faulty taillight relay Faulty combination light switch An open in the wire
  5. Reconnect the driver's multiplex control unit to the driver's under-dash fuse/relay box, and perform the following input tests at the appropriate connectors on the back of the driver's under-dash fuse/relay box. For driver's under-dash fuse/relay box connector socket location (see «DRIVER'S UNDER-DASH FUSE/RELAY BOX»(/honda/pilot/i-2004-2009/remont/body-electrical/#fuserelay-boxes__drivers-under-dash-fuserelay-box) ). 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 6. REFERENCE CHART (DRIVER'S MULTIPLEX CONTROL UNIT CONNECTED) Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained E3 GRN/ORN Driver's door open Check for voltage to ground: There should be less than 1 V. Faulty driver's door switch An open in the wire Driver's door closed Check for voltage to ground: There should be 5 V or more. A short to ground Faulty driver's door switch An open in the wire M9 BLU/BLK Ignition key is in the ignition switch Check for voltage to ground: There should be less than 1 V. Poor ground (G401) Faulty ignition switch An open in the wire Ignition key is out of the ignition switch Check for voltage to ground: There should be 5 V or more. A short to ground Poor ground (G401) Faulty ignition switch An open in the wire E10 LT GRN/BLK Left rear door open Check for voltage to ground: There should be less than 1 V. Faulty left rear door switch An open in the wire Left rear door closed Check for voltage to ground: There should be 5 V or more. A short to ground Faulty left rear door switch An open in the wire B81 (1) ORN Tailgate open Check for voltage to ground: There should be less than 1 V. Poor ground (G652) Faulty tailgate latch switch An open in the wire Tailgate closed Check for voltage to ground: There should be 5 V or more. Short to ground Poor ground (G652) Faulty tailgate latch switch An open in the wire (1) Driver's multiplex control unit connector B Passenger's Multiplex Control Unit
  6. Remove the passenger's multiplex control unit from the passenger's under-dash fuse/relay box, and disconnect its connector.
  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. With the passenger's multiplex control unit still disconnected, make these input tests at the connector and passenger's under-dash fuse/relay box socket. 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. REFERENCE CHART Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained A22 Fuse/relay box socket Ignition switch ON (II) Check for voltage to ground: There should be battery voltage. Blown No. 9 (10 A) fuse in the driver's under-dash fuse/relay box Faulty passenger's under-dash fuse/relay box An open in the wire A21 Interior light switches in the middle (Door) position Attach to ground: Interior lights should come on. Blown No. 11 (10 A) fuse in the passenger's under-dash fuse/relay box Blown No. 54 (40 A) fuse in the under-hood fuse/relay box Faulty passenger's under-dash fuse/relay box Faulty individual map light Faulty interior lights switch An open in the wire
  9. Reconnect the passenger's multiplex control unit to the passenger's under-dash fuse/relay box, and perform the following input tests at the appropriate connector of the passenger's under-dash fuse/relay box. 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 10. REFERENCE CHART (PASSENGER'S MULTIPLEX CONTROL UNIT TO PASSENGER'S UNDER-DASH FUSE/RELAY BOX CONNECTED) Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained C16 WHT/ORN Front passenger's door open Check for voltage to ground: There should be less than 1 V. Faulty front passenger's door switch An open in the wire Front passenger's door closed Check for voltage to ground: There should be 5 V or more. Faulty front passenger's door switch A short to ground in the wire C14 GRN/WHT Right rear door open Check for voltage to ground: There should be less than 1 V. Faulty right rear door switch An open in the wire Right rear door closed Check for voltage to ground: There should be 5 V or more. Faulty right rear door switch A short to ground in the wire Door Multiplex Control Unit
  10. Remove the driver's door panel and disconnect the 20P connector from the door multiplex control unit.
  11. 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 12.
  12. Reconnect the connector to the door multiplex control unit, and make the input test at the connector. If a test indicates a problem, find and correct the cause, then recheck the system. If the input test proves OK, go to step 13. REFERENCE CHART (DOOR MULTIPLEX CONTROL UNIT CONNECTOR A) Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained A17 BLK/RED Driver's door lock knob unlocked Check for voltage to ground: There should be less than 1 V. Faulty driver's door lock actuator Poor ground (G401) An open in the wire Driver's door lock knob locked Check for voltage to ground: There should be 5 V or more. Faulty driver's door lock actuator Short to ground
  13. If all the input tests prove OK, one of the control units must be faulty. Substitute a known-good control unit for the one that is most likely at fault, then recheck the system. If the system works properly, the original control unit is faulty; replace it. If there is still a malfunction, substitute a known-good control unit for the next most likely unit to be at fault, and recheck. If the system works properly, the original unit is faulty; replace it.