Keyless Entry/Security Alarm System Control Unit Input Test

Keyless Entry/Security Alarm System Control Unit Input Test

1.	Before testing the keyless entry/security control functions, troubleshoot the multiplex integrated control system..

Multiplex Integrated Control Unit

2.	Remove the left kick panel (LHD type) or right kick panel (RHD type).

3.

Disconnect the under-dash fuse/relay box connectors. NOTE: All connectors are wire side of female terminals. UNDER-DASH FUSE/RELAY BOX CONNECTOR E (16P)UNDER-DASH FUSE/RELAY BOX CONNECTOR H (14P)UNDER-DASH FUSE/RELAY BOX CONNECTOR K (12P)UNDER-DASH FUSE/RELAY BOX CONNECTOR P (30P)UNDER-DASH FUSE/RELAY BOX CONNECTOR N (45P)UNDER-DASH FUSE/RELAY BOX CONNECTOR Q (14P)YELGRN/YELUNDER-DASH FUSE/RELAY BOX CONNECTOR F (14P)GRNYEL/BLKYEL/GRNYEL/BLKGRN/WHTLT GRN/REDYELYELYEL/BLKYEL/BLKBRN*1PNK*1WHT/GRN*2BLU/BLK*2BLKLT GRN/RED*4YELRED/WHT*2LT GRN*2RED/WHT*1WHT/GRN*1UNDER-DASH FUSE/RELAY BOX CONNECTOR Q (14P)YEL*3BRN*2RED*1GRY*1WHT*1RED*2ORN*2RED/BLU*2*1: LHD type*2: RHD type*3: With ultrasonicLT GRN*1LT GRN/RED*4GRY/RED*4*4: KE model

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 5.

5.

With the connectors still disconnected, make these input tests at the connectors. If any test indicates a problem, find and correct the cause, then recheck the system. If the input tests prove OK, go to 6. Cavity  Wire  Test condition  Test: Desired result  Possible cause if result is not obtained  H9  BLK  Under all conditions  Check for continuity to ground: There should be continuity.  Poor ground (G601) An open in the wire   F5  YEL/GRN  Connect the F5 terminal to the battery positive terminal momentarily.  Check trunk opener operation: Trunk lid should open.  Poor ground (G701) Faulty trunk opener solenoid An open in the wire   K11  YEL  Connect the battery positive terminal to K12 (K11) terminal, and K11 (K12) terminal to H9 terminal.  Check actuator operation: The driver's door lock actuator should lock (unlock).  Faulty driver's door lock actuator An open in the wire   K12  YEL/BLK  N7  YEL/BLK  Connect the battery positive terminal to N7 (N9) terminal, and N9 (N7) terminal to H9 terminal.  Check actuator operation: The front passenger's door lock actuator should lock (unlock).  Faulty front passenger's door lock actuator An open in the wire   N9  YEL    E2*1   H3*2  YEL/BLK  Connect the battery positive terminal to E2 or H3 (E8 or H10) terminal, and E8 or H10 (E2 or H3) terminal to H9 terminal.  Check actuator operation: The left rear door lock actuator should lock (unlock).  Faulty left rear door lock actuator An open in the wire     E8*1   H10*2  YEL    H3*1   E2*2  YEL/BLK  Connect the battery positive terminal to H3 or E2 (H10 or E8) terminal, and H10 or E8 (H3 orE2) terminal to H9 terminal.  Check actuator operation: The right rear door lock actuator should lock (unlock).  Faulty right rear door lock actuator An open in the wire     H10*1   E8*2  YEL    P23*1   P22*2  WHT/GRN  Under all conditions  Check for continuity to ground: There should be continuity.  Faulty hazard warning light relay An open in the wire     K2*3  LT GRN/RED  Under all conditions  Check for continuity between the K2 terminal and No. 1 terminal of the driver's actuator. There should be continuity.  An open in the wire     E10*3  LT GRN/RED  Under all conditions  Check for continuity between the E10 terminal and No. 1 terminal of the right rear actuator. There should be continuity.  An open in the wire     X13*3  GRY/RED  Under all conditions  Check for continuity between the X13 terminal and No. 6 terminal of the front passenger's or left rear actuator. There should be continuity.  An open in the wire   *1:  LHD type  *2:  RHD type  *3:  With super locking

6.

Reconnect all connectors to the under-dash fuse/relay box, 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 7. Cavity  Wire  Test condition  Test: Desired result  Possible cause if result is not obtained    Q8*1   Q13*2  BRN  Front passenger's door lock knob switch unlocked  Check for voltage to ground: There should be 1 V or less.  Poor ground (G503) Faulty front passenger's  door lock knob switch An open in the wire   Front passenger's door lock knob switch locked  Check for voltage to ground: There should be 5 V or more.  Faulty front passenger's door lock knob switch Short to ground     Q2*1   Q5*2  GRY*1 · ORN*2  Left rear door lock knob switch unlocked  Check for voltage to ground: There should be 1 V or less.  Poor ground (G501, G601) Faulty left rear door lock knob switch An open in the wire   Left rear door lock knob switch locked  Check for voltage to ground: There should be 5 V or more.  Faulty left rear door lock knob switch Short to ground     Q3*1   Q4*2  WHT*1 · RED*2  Right rear door lock knob switch unlocked  Check for voltage to ground: There should be 1 V or less.  Poor ground (G602) Faulty right rear door lock knob switch An open in the wire   Right rear door lock knob switch locked  Check for voltage to ground: There should be 5 V or more.  Faulty right rear door lock knob switch Short to ground     Q8*3  YEL  Under all conditions  Check for continuity between the Q8 terminal and No. 2 terminal of the alarm control siren. There should be continuity.  An open in the wire   *1:  LHD type  *2:  RHD type  *3:  With super locking  Cavity  Wire  Test condition  Test: Desired result  Possible cause if result is not obtained    Q1*1   Q6*2  RED*1 · RED/BLU*2  Under all conditions  Check for continuity to ground: There should be continuity.  Poor ground (G504) Faulty connections at the audio unit Faulty audio unit An open in the wire     P13*1   P2*2  RED/WHT  Ignition key inserted into the ignition switch.  Check for voltage to ground: There should be 1 V or less.  Poor ground (G501, G601) Faulty  ignition key switch An open in the wire   Ignition key removed from the ignition switch.  Check for voltage to ground: There should be 5 V or more.  Faulty ignition key switch Short to ground   E15  GRN  Driver's door open  Check for voltage to ground: There should be 1 V or less.  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.  Faulty driver's door switch Short to ground   H12  LT GRN/RED  Front passenger's door open  Check for voltage to ground: There should be 1 V or less.  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 Short to ground     E14*1   H13*2  GRN/YEL*1 GRN/WHT*2  Left rear door open  Check for voltage to ground: There should be 1 V or less.  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.  Faulty left rear door switch Short to ground     H13*1   E14*2  GRN/WHT*1 GRN/YEL*2  Right rear door open  Check for voltage to ground: There should be 1 V or less.  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 Short to ground     P24*1   P21*2  BLU/BLK  Trunk lid open  Check for voltage to ground: There should be 1 V or less.  Poor ground (G701) Faulty  trunk latch switch An open in the wire   Trunk lid closed  Check for voltage to ground: There should be 5 V or more.  Faulty trunk latch switch Short to ground     P8*1   P7*2  LT GRN  Trunk opener switch pushed  Check for voltage to ground: There should be 1 V or less.  Poor ground (G701) Faulty trunk open switch An open in the wire   Trunk opener switch released  Check for voltage to ground: There should be 5 V or more.  Faulty trunk open switch Short to ground   *1:  LHD type  *2:  RHD type

Door Multiplex Control Unit

7.	Remove the driver's power window switch panel.

8.	Disconnect the 23P connector from the power window master switch. WHTWHT/BLKWire side of female terminalsWHT/REDYEL/RED

9.	Inspect the connector and socket terminals to be sure they are all making good contact. If the terminals are bent, loose or correded, repair them as nesessary, and receck the system. If the terminals look OK, go to 10.

10.

Reconnect the connector to the door multiplex control unit, and make these input tests at the 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 11. Cavity  Wire  Test condition  Test: Desired result  Possible cause if result is not obtained  7  WHT/BLK  Driver's door lock knob switch unlocked  Check for voltage to ground: There should be 1 V or less.  Poor ground (G501) Faulty driver's  door lock knob switch An open in the wire   Driver's door lock knob switch locked  Check for voltage to ground: There should be 5 V or more.  Faulty driver's door lock knob switch Short to ground   22  YEL/RED  Driver's door lock knob switch locked  Check for voltage to ground: There should be 1 V or less.  Poor ground (G501) Faulty driver's door lock knob switch An open in the wire   Driver's door lock knob switch unlocked  Check for voltage to ground: There should be 5 V or more.  Faulty driver's door lock knob switch Short to ground   21  WHT  Driver's door key cylinder switch in UNLOCK  Check for voltage to ground: There should be 1 V or less.  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 neutral  Check for voltage to ground: There should be 5 V or more.  Driver's door key cylinder switch in LOCK  Check for voltage to ground: There should be 5 V or more.  8  WHT/RED  Driver's door key cylinder switch in LOCK  Check for voltage to ground: There should be 1 V or less.  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 neutral  Check for voltage to ground: There should be 5 V or more.  Driver's door key cylinder switch in UNLOCK  Check for voltage to ground: There should be 5 V or more.

11.

If all the input tests prove OK, and no DTCs were found during MICS troubleshooting (B-CAN system diagnosis test mode A), go to the B-CAN system input and output index. If multiple failures are found on more than one control unit, replace the under-dash fuse/relay box (includes the MICU). If input failures are related to a particular control unit, replace that control unit.