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Home/Acura/MDX/Acura MDX II рестайлинг (2010-2013)/Repair manual/Interior/illumination Lights/Entry Lights Control System
Contents Section: Interior/illumination Lights All sections

Entry Lights Control System Acura MDX II рестайлинг

Interior/illumination Lights 15 illustrations ~1710 words

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Scheme 18: Component Location Index
Scheme 18: Component Location Index

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Scheme 20: Circuit Diagram
Scheme 20: Circuit Diagram

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Scheme 21

Control Unit Input Test

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

Under-dash Fuse/Relay Box

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Scheme 22: Control Unit Input Test
Scheme 22: Control Unit Input Test

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Scheme 30
  1. Turn the ignition switch to LOCK (0) and remove the left kick panel (see «TRIM REMOVAL/INSTALLATION - DOOR AREAS»(/acura/mdx/ii-2010-2013/remont/exteriorinterior-trim/#interior-trim__trim-removalinstallation-door-areas) ).
  2. Disconnect under-dash fuse/relay box connectors E, F, H, P, Q, and W. NOTE: All connector views are 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, turn the ignition switch to ON (II), 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 5. Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained E9 BLK In all ignition switch positions Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G601) or an open in the ground wire An open or high resistance in the wire H9 Q4 P1 BRN In all ignition switch positions Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G502) or an open in the ground wire An open or high resistance in the wire P13 PNK Ignition key inserted into the ignition switch Measure the voltage to ground: There should be less than 0.2 V. Faulty ignition key switch Faulty under-dash fuse/relay box Poor ground (G601) or an open in the ground wire An open or high resistance in the wire Ignition switch LOCK (0) and the ignition key removed from the ignition switch Measure the voltage to ground: There should be at least 5 V. Faulty ignition key switch A short to ground in the wire E15 GRN 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 at least 5 V. Faulty driver's door switch A short to ground in the wire H12 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 be at least 5 V. Faulty front passenger's door switch A short to ground in the wire Q2 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 A short to ground in the wire Q8 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 at least 5 V. Faulty left rear door switch A short to ground in the wire F14 ORN Under all conditions Attach to ground: The ignition key light should come on. Blown No. 4 (40 A) fuse in the main under-hood fuse box Blown No. 6 (7.5 A) fuse in the under-dash fuse/relay box Faulty main under-hood fuse box Faulty under-dash fuse/relay box Faulty ignition key light An open or high resistance in the wire W4 LT GRN Under all conditions (Interior light control button (DOOR) pressed) Attach to ground: The individual map lights and footwell lights should come on. Blown No. 4 (40 A) fuse in the main under-hood fuse box Blown No. 6 (7.5 A) fuse in the under-dash fuse/relay box Faulty main under-hood fuse box Faulty under-dash fuse/relay box Faulty roof console Faulty rear individual map lights Blown footwell light bulbs An open or high resistance in the wire Rear Fuse/Relay Box
  5. Turn the ignition switch to LOCK (0).
  6. Remove the left rear side trim (see «TRIM REMOVAL/INSTALLATION - REAR SIDE AREA»(/acura/mdx/ii-2010-2013/remont/exteriorinterior-trim/#interior-trim__trim-removalinstallation-rear-side-area) ).
  7. Disconnect rear fuse/relay box connector B (34P).
  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, then turn the ignition switch to ON (II), 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. Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained B18 BLK In all ignition switch positions Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G603, G604) or an open in the ground wire An open or high resistance in the wire B29 B4 WHT Under all conditions Measure the voltage to ground: There should be battery voltage. Blown No. 4 (40 A) fuse in the main under-hood fuse box Faulty main under-hood fuse box Blown No. 7 (10 A) fuse in the under-dash fuse/relay box Faulty under-dash fuse/relay box An open or high resistance in the wire B23 LT BLU Ignition switch ON (II) Measure the voltage to ground: There should be battery voltage. Blown No. 21 (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 Driver's MPCS Unit
  10. Turn the ignition switch to LOCK (0).
  11. Remove the driver's door panel (see «FRONT DOOR PANEL REMOVAL/INSTALLATION»(/acura/mdx/ii-2010-2013/remont/exterior-body-panels/#doors__front-door-panel-removalinstallation) ).
  12. Disconnect driver's MPCS unit connectors A (40P) and B (14P).
  13. 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 14.
  14. With the connectors still disconnected, 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 15. Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained A23.A27 PNK.BRN Driver's door lock switch in LOCK Check for continuity: There should be continuity. Faulty driver's door lock switch An open or high resistance in the wire Driver's door lock switch in neutral or UNLOCK Check for continuity: There should be no continuity. Faulty driver's door lock switch A short to ground in the wire A24.A27 RED.BRN Driver's door lock switch in UNLOCK Check for continuity: There should be continuity. Faulty driver's door lock switch An open in the wire Driver's door lock switch in neutral or LOCK Check for continuity: There should be no continuity. Faulty driver's door lock switch A short to ground in the wire
  15. Reconnect the connectors, 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 16. Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained A5 BLK In all ignition switch positions Measure the voltage to ground: There should be less than 0.2 V. Poor ground(G601) or an open in the ground wire An open or high resistance in the wire B14 A7 WHT Under all conditions Measure the voltage to ground: There should be battery voltage. Blown No. 4 (40 A) fuse in the main under-hood fuse box Faulty main under-hood fuse box Blown No. 7 (10 A) fuse in the under-dash fuse/relay box Faulty under-dash fuse/relay box An open or high resistance in the wire A25 YEL Ignition switch ON (II) Measure the voltage to ground: There should be battery voltage. Blown No. 21 (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
  16. 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»(/acura/mdx/ii-2010-2013/remont/fuses-circuit-breakers/#under-dash-fuserelay-box__removal-and-installation) ). 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 31

Scheme 31: Ignition Key Switch Test
Scheme 31: Ignition Key Switch Test
  1. Remove the steering column upper and lower covers (see «COLUMN COVER REMOVAL/INSTALLATION»(/acura/mdx/ii-2010-2013/remont/gauges-instrument-panels/#dashboard__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 ignition switch.

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 32

Scheme 32: Ignition Key Light Test
Scheme 32: Ignition Key Light Test
  1. Remove the steering column upper and lower covers (see «COLUMN COVER REMOVAL/INSTALLATION»(/acura/mdx/ii-2010-2013/remont/gauges-instrument-panels/#dashboard__column-cover-removalinstallation) ).
  2. Disconnect the 6P connector (A).
  3. The LED (B) should come on when power is connected to the 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»(/acura/mdx/ii-2010-2013/remont/manual-power-steering/#steering) ).

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