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Home/Acura/TSX/Acura TSX II (2008-2014)/Repair manual/Interior/illumination Lights/Entry Lights Control System (4-cyl)
Contents Wiring diagrams Section: Interior/illumination Lights All sections

Entry Lights Control System (4-cyl) Acura TSX II

Interior/illumination Lights 11 illustrations ~1790 words

Scheme 54

Scheme 54: Sedan
Scheme 54: Sedan

Scheme 55

Scheme 55
Scheme 55

Scheme 56

Scheme 56: Sport Wagon
Scheme 56: Sport Wagon

Scheme 57

Scheme 57
Scheme 57

Scheme 58

Scheme 58: Circuit Diagram
Scheme 58: Circuit Diagram

Scheme 59

Scheme 59
Scheme 59

Control Unit Input Test

Note. Before testing, troubleshoot the multiplex integrated control system first, using B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 60

Scheme 60: Driver's MICU
Scheme 60: Driver's MICU

Scheme 61

Scheme 61
Scheme 61

Scheme 62

Scheme 62
Scheme 62
  1. Turn the ignition switch to LOCK (0).
  2. Remove the driver's dashboard undercover (see «DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/gauges-instrument-panels/#dashboard-4-cyl__drivers-dashboard-undercover-removalinstallation) ), then remove the dashboard lower cover (see «DRIVER'S DASHBOARD LOWER COVER REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/gauges-instrument-panels/#dashboard-4-cyl__drivers-dashboard-lower-cover-removalinstallation) ).
  3. Disconnect driver's under-dash fuse/relay box connectors D, P, Q, and R. NOTE: All connector views are wire side of female terminals.
  4. 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 5.
  5. Reconnect the connectors to the driver's under-dash fuse/relay box, and do the following input tests: 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. INPUT TEST REFERENCE CHART Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained Q1 BLK Under all conditions Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G502) An open or high resistance in the ground wire Q2 BRN Under all conditions Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G501) An open or high resistance in the ground wire R2 BRN Under all conditions Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G501) An open or high resistance in the ground wire R5 BLK Under all conditions Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G502) An open or high resistance in the ground wire D4 LT GRN Left rear door open Measure the voltage to ground: There should be less than 0.2 V. Faulty left rear door switch Faulty left rear door switch ground An open or high resistance in the wire Left rear door closed Measure the voltage to ground: There should be about 5 V. Faulty left rear door switch A short to ground in the wire D12 BRN 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 about 5 V. Faulty driver's door switch A short to ground in the wire P4 PNK Ceiling light switch in the DOOR position, Interior light switch in the DOOR position Connect a jumper wire to ground: The ceiling light and individual map lights should come on. Blown No. 16 (7.5 A) fuse in the under-hood fuse/relay box Faulty ceiling light Faulty front individual map light Faulty interior light switch Blown bulb An open or high resistance in the wire Q11 RED Under all conditions Connect a jumper wire to ground: The ignition key light should come on. Blown No. 16 (7.5 A) fuse in the under-hood fuse/relay box Faulty ignition key light An open or high resistance in the wire Q18 WHT Ignition key inserted into the ignition switch Measure the voltage to ground: There should be less than 0.2 V. Faulty ignition key switch An open or high resistance in the wire Poor ground (G503)or an open in the ground wire Ignition switch LOCK (0), and the ignition key removed from the ignition switch Measure the voltage to ground: There should be about 5 V. Faulty ignition key switch A short to ground in the wire
  6. Turn the ignition switch to LOCK (0), and remove the passenger's kick panel (see «TRIM REMOVAL/INSTALLATION - DOOR AREAS»(/acura/tsx/ii-2008-2014/remont/exteriorinterior-trim/#interior-trim-4-cyl__trim-removalinstallation-door-areas) ).
  7. Disconnect passenger's under-dash fuse/relay box connectors A, E, and H. NOTE: All connector views are wire side of female terminals.
  8. 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 9.
  9. Reconnect the connectors to the passenger's under-dash fuse/relay box, and do the following input tests: 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. INPUT TEST REFERENCE CHART Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained A14 WHT Under all conditions Measure the voltage to ground: There should be battery voltage. Blown No. 15 (10 A) fuse in the under-hood fuse/relay box Faulty driver's under-dash fuse/relay box An open or high resistance in the wire A35 BRN Ignition switch ON (II) Measure the voltage to ground: There should be battery voltage. Blown No. 5 (7.5 A) fuse in the driver's under-dash fuse/relay box Faulty driver's under-dash fuse/relay box An open or high resistance in the wire A36 BLK Under all conditions Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G505) An open or high resistance in the ground wire A37 BLK Under all conditions Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G505) An open or high resistance in the ground wire E15 BLK Under all conditions Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G201) An open or high resistance in the ground wire E16 BLK Under all conditions Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G201) An open or high resistance in the ground wire H25 LT GRN 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 about 5 V. Faulty right rear door switch A short to ground in the wire H3 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 be about 5 V. Faulty front passenger's door switch A short to ground in the wire Door Multiplex Control Unit
  10. Turn the ignition switch to LOCK (0), and remove the power window master switch (see «POWER WINDOW MASTER SWITCH REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/windows/#power-windows-4-cyl) ).
  11. Disconnect the 37P connector from the power window master switch. POWER WINDOW MASTER SWITCH 37P CONNECTOR
  12. 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 13.
  13. Reconnect the 37P connector to the power window master switch, and do the following input tests: 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 14. INPUT TEST REFERENCE CHART Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained 13 WHT Under all conditions Measure the voltage to ground: There should be battery voltage. Blown No. 15(10 A) fuse in the under-hood fuse/relay box Faulty driver's under-dash fuse/relay box An open or high resistance in the wire 32 BLK Under all conditions Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G501) An open or high resistance in the ground wire 37 BLK Under all conditions Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G502) An open or high resistance in the ground wire 30 YEL Driver's door lock knob switch in LOCK Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G501) 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 UNLOCK Measure the voltage to ground: There should be battery voltage. Faulty driver's door lock knob switch A short to ground in the wire 31 WHT Driver's door lock knob switch in UNLOCK Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G501) 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 battery voltage. Faulty driver's door lock knob switch A short to ground in the wire
  14. If multiple failures are found on more than one control unit, replace the driver's under-dash fuse/relay box (includes the driver's MICU), USA models (see «DRIVER'S UNDER-DASH FUSE/RELAY BOX (MICU) REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/fuses-circuit-breakers/#under-dash-fuserelay-box-4-cyl__drivers-under-dash-fuserelay-box-micu-removal) ), Canada models (see «SPECIAL TOOLS REQUIRED»(/acura/tsx/ii-2008-2014/remont/fuses-circuit-breakers/#under-dash-fuserelay-box-4-cyl__special-tools-required) ). 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 repairs or servicing.

Scheme 63

Scheme 63: Ignition Key Switch Test
Scheme 63: Ignition Key Switch Test
  1. Remove the steering column upper and lower covers (see «COLUMN COVER REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/gauges-instrument-panels/#dashboard-4-cyl__column-cover-removalinstallation) ).
  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 (see «STEERING LOCK REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/manual-power-steering/#steering-4-cyl) ).

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 repairs or servicing.

Scheme 64

Scheme 64: Ignition Key Light Test
Scheme 64: Ignition Key Light Test
  1. Remove the steering column upper and lower covers (see «COLUMN COVER REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/gauges-instrument-panels/#dashboard-4-cyl__column-cover-removalinstallation) ).
  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 (see «STEERING LOCK REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/manual-power-steering/#steering-4-cyl) ).

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