Entry Lights Control System Acura TSX I

Scheme 11

Scheme 12

Scheme 13

Scheme 14

1. Before testing the entry light control functions, troubleshoot the multiplex integrated control system using B-CAN System Diagnosis Test Mode A (see «TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A»(/acura/tsx/i-2003-2008/remont/communication-devices/#multiplex-integrated-control-system__troubleshooting-b-can-system-diagnosis-test) ). Multiplex Integrated Control Unit
2. Remove the left kick panel (see «TRIM REMOVAL/INSTALLATION - DOOR AREAS»(/acura/tsx/i-2003-2008/remont/exteriorinterior-trim/#interior-trim__trim-removalinstallation-door-areas) ).
3. Disconnect the under-dash fuse/relay box connectors. NOTE: All connectors are shown from the wire side of female terminals.
4. Inspect the connector 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.
5. Reconnect the connectors to the under-dash fuse/relay box, turn the ignition switch ON (II), and make these input tests at the appropriate connectors on the 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 6. TEST CONDITION REFERENCE CHART Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained P1 BRN Under all conditions Measure the voltage to ground: There should be less than 1 V. Poor ground (G502) An open in the wire E9 BLK Under all conditions Measure the voltage to ground: There should be less than 1 V. Poor ground (G601) An open in the wire E15 GRN Driver's door open Measure the voltage to ground: There should be less than 1 V. Faulty driver's door switch An open in the wire Driver's door closed Measure the voltage to ground: There should be 5 V or more. Faulty driver's door switch Short to ground H12 LT GRN/RED Front passenger's door open Measure the 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 Measure the voltage to ground: There should be 5 V or more. Faulty front passenger's door switch Short to ground EH GRN/YEL Left rear door open Measure the voltage to ground: There should be less than 1 V. Faulty left rear door switch An open in the wire Left rear door closed Measure the voltage to ground: There should be 5 V or more. Faulty left rear door switch Short to ground H13 GRN/WHT Right rear door open Measure the voltage to ground: There should be less than 1 V. Faulty right rear door switch An open in the wire Right rear door closed Measure the voltage to ground: There should be 5 V or more. Faulty right rear door switch Short to ground P13 RED/WHT*1 RED*2 Ignition key inserted into the ignition switch Measure the voltage to ground: There should be less than 1 V. Poor ground (G501) Faulty ignition key switch An open in the wire Ignition key removed from the ignition switch Measure the voltage to ground: There should be 5 V or more. Faulty ignition key switch Short to ground
6. Disconnect the under-dash fuse/relay box connectors J (21P), P (30P) and W (5P), and make these input tests at the connector. If any test indicates a problem, find and correct the cause, the recheck the system. If all the input tests prove OK, reconnect the connectors to the fuse/relay box, then go to step 7. TEST CONDITION REFERENCE CHART Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained P7 WHT/BLK*1 WHT*2 Under all conditions Attach to ground: Ignition key light should come on. Blown No. 13 (20 A) fuse in the under-hood fuse/relay box Faulty ignition key light (LED) An open in the wire W4 GRN/RED Ceiling light switch in middle position Attach to ground: Ceiling light(s) should come on. Blown No. 6 (10 A) fuse in the under-dash fuse/relay box Blown bulb Faulty ceiling light An open in the wire J4 BRN/RED Power window master switch 23P connector disconnected Check for continuity between under-dash fuse/relay box connector J (21P) No. 4 terminal and power window master switch (23P) connector No. 16 terminal An open in the wire Short to ground Door Multiplex Control Unit
7. Remove the driver's door panel (see «FRONT DOOR PANEL REMOVAL/INSTALLATION»(/acura/tsx/i-2003-2008/remont/exterior-body-panels/#door-system__front-door-panel-removalinstallation) ).
8. Disconnect the 23P connector from the door multiplex control unit.
9. 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 10.
10. Reconnect the connector to the door multiplex control unit, turn the ignition switch ON (II), 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, the control unit must be faulty; replace it. TEST CONDITION REFERENCE CHART Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained 22 YEL/RED Driver's door lock knob locked Measure the voltage to ground: There should be less than 1 V. Faulty driver's door lock actuator Poor ground (G501) An open in the wire Drive's door lock knob unlocked Measure the voltage to ground: There should be 5 V or more. Faulty driver's door lock actuator Short to ground 8 WHT/RED Driver's door key cylinder switch in LOCK Measure the voltage to ground: There should be less than 1 V. Faulty driver's door key cylinder switch Poor ground (G501) An open in the wire Short to ground Driver's door key cylinder switch in the neutral position Measure the voltage to ground: There should be 5 V or more. Driver's door key cylinder switch in UNLOCK Measure the voltage to ground: There should be 5 V or more. 21 WHT Driver's door key cylinder switch in UNLOCK Measure the voltage to ground: There should be less than 1 V. Faulty driver's door key cylinder switch Poor ground (G501) An open in the wire Short to ground Driver's door key cylinder switch in the neutral position Measure the voltage to ground: There should be 5 V or more. Driver's door key cylinder switch in LOCK Measure the voltage to ground: There should be 5 V or more. 7 WHT/BLK Driver's door lock knob unlocked Measure the voltage to ground: There should be less than 1 V. Faulty driver's door lock actuator Poor ground (G501) An open in the wire Driver's door lock knob locked Measure the voltage to ground: There should be 5 V or more. Faulty driver's door lock actuator Short to ground

Scheme 15

1. Remove the steering column upper and lower covers (see «STEERING COLUMN REMOVAL AND INSTALLATION»(/acura/tsx/i-2003-2008/remont/manual-power-steering/#power-steering-system__steering-column-removal-and-installation) ).
2. Disconnect the 6P connector.
3. Check for continuity between the No. 1 and No. 2 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 switch.

Scheme 16

1. Remove the steering column upper and lower covers (see «STEERING COLUMN REMOVAL AND INSTALLATION»(/acura/tsx/i-2003-2008/remont/manual-power-steering/#power-steering-system__steering-column-removal-and-installation) ).
2. Disconnect the 6P connector.
3. The LED should come on when power is connected to the No. 6 terminal and ground is connected to No. 5 terminal.
4. If the LED does not come on, replace the ignition switch.

See also:
• TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A
• TRIM REMOVAL/INSTALLATION - DOOR AREAS
• FRONT DOOR PANEL REMOVAL/INSTALLATION
• STEERING COLUMN REMOVAL AND INSTALLATION