Keyless/Power Door Locks/Security System (MICU) Input Test

1.Turn the ignition switch OFF.

2.Remove the left kick panel.

3.Disconnect the driver's under-dash fuse/relay box connectors E, F, G, M, N, Q, R, and T.

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 5.

5.With the under-dash fuse/relay box connectors and MICU connectors still disconnected, 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, go to 6.

Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained 
G2 ORN Under all conditions Check for voltage between G2 terminal and body ground:
There should be battery voltage.  
  • Blown No. 23 (10 A) fuse in the under-hood fuse/relay box
  • An open in the wire
 
G21 BLU Under all conditions Check for voltage between G21 terminal and body ground:
There should be battery voltage.  
  • Blown No. 4 (40 A) fuse in the under-hood fuse/relay box
  • An open in the wire
 
G16 WHT Under all conditions Check for voltage between G16 terminal and body ground:
There should be battery voltage. 
  • Blown No. 12 (15 A) fuse in the under-hood fuse/relay box
  • An open in the wire
 
G6 YEL Under all conditions Check for voltage between G6 terminal and body ground:
There should be battery voltage. 
  • Blown No. 10 (10 A) fuse in the under-hood fuse/relay box
  • An open in the wire
 
G7 LT GRN Under all conditions Connect G16 and G7 terminals with a jumper wire momentarily:
The horn should sound. 
  • Poor ground (Body ground)
  • Blown No. 12 (15 A) fuse in the under-hood fuse/relay box
  • Faulty horn
  • An open in the wire
 
N7 BLU Under all conditions Connect battery power to the N13 terminal and ground the N7 terminal momentarily:
The driver's door lock actuator should lock. 
  • Faulty driver's door lock actuator
  • An open in the wire
 
N13 YEL 
M8 YEL Under all conditions Connect battery power to the M8 terminal and ground the M10 terminal momentarily:
The front passenger's door lock actuator should unlock. 
  • Faulty front passenger's door lock actuator
  • An open in the wire
 
M10 BLU 
E1 YEL Under all conditions Connect battery power to the E1 terminal and ground the E21 terminal momentarily:
The right rear door lock actuator should unlock. 
  • Faulty right rear door lock actuator
  • An open in the wire
 
E21 BLU 
E14 YEL Under all conditions Connect battery power to the E14 terminal and ground the E31 terminal momentarily:
The left rear door lock actuator should unlock. 
  • Faulty left rear door lock actuator
  • An open in the wire
 
E31 BLU 
R4 RED Under all conditions Check for voltage to ground:
There should be battery voltage. 
  • Blown No. 25 (20 A) fuse in the under-dash fuse/relay box
  • Driver's super locking relay
  • An open in the wire
 
M4 WHT 
R5 GRN Under all conditions Check for voltage to ground:
There should be battery voltage. 
  • Blown No. 25 (20 A) fuse in the under-dash fuse/relay box
  • Front passenger's super locking relay
  • An open in the wire
 
M4 WHT 

6.Reconnect the under-dash fuse/relay box connectors and MICU connectors, then 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 MICU must be faulty; replace the under-dash fuse/relay box assembly.

Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained 
E6 BLK Under all conditions Check for voltage to ground:
There should be less than 0.5 V. 
  • Poor ground (G602)
  • An open in the wire
 
E33 BLK Under all conditions Check for voltage to ground:
There should be less than 0.5 V. 
  • Poor ground (G601)
  • An open in the wire
 
F20 BLK Under all conditions Check for voltage to ground:
There should be less than 0.5 V. 
  • Poor ground (G401)
  • An open in the wire
 
T34 BLK Under all conditions Check for voltage to ground:
There should be less than 0.5 V. 
  • Poor ground (G501)
  • An open in the wire
 
E2 GRY Right [Left] rear door open Check for voltage to ground:
There should be less than 0.5 V. 
  • Faulty right [left] rear door switch
  • An open in the wire
 
Right [Left] rear door closed Check for voltage to ground:
There should be 5 V or more. 
  • Faulty right [left] rear door switch
  • Short to ground
 
E3 LT GRN Front passenger's door open Check for voltage to ground:
There should be less than 0.5 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
  • Short to ground
 
E17 BRN Left [Right] rear door open Check for voltage to ground:
There should be less than 0.5 V. 
  • Faulty left [right] rear door switch
  • An open in the wire
 
Left [Right] rear door closed Check for voltage to ground:
There should be 5 V or more. 
  • Faulty left [right] rear door switch
  • Short to ground
 
E36 BLU Trunk lid open Check for voltage to ground:
There should be less than 0.5 V. 
  • Poor ground (G701)
  • Faulty trunk lid latch switch
  • An open in the wire
 
Trunk lid closed Check for voltage to ground:
There should be 5 V or more. 
  • Faulty trunk lid latch switch
  • Short to ground
 
E37 GRN Driver's door open Check for voltage to ground:
There should be less than 0.5 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. 
  • Faulty driver's door switch
  • Short to ground
 
F27 GRN Transmission range switch in P Check for voltage to ground:
There should be less than 0.5 V. 
  • Poor ground (G101)
  • Faulty transmission range switch
  • An open in the wire
 
Transmission range switch in any other position than P Check for voltage to ground:
There should be 5 V or more. 
  • Faulty transmission range switch
  • Short to ground
 
G13 LT BLU Hood open Check for voltage to ground:
There should be less than 0.5 V. 
  • Poor ground (G401)
  • Faulty hood switch
  • An open in the wire
 
Hood closed Check for voltage to ground:
There should be 5 V or more. 
  • Faulty hood switch
  • Short to ground
 
R6 PNK Ignition key inserted into the ignition switch Check for voltage to ground:
There should be less than 0.5 V. 
  • Poor ground (G504)
  • Faulty ignition key switch
  • An open in the wire
 
Ignition switch OFF and 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
 

[ ]: RHD type 

Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained 
T7 GRN Trunk key cylinder switch unlocked Check for voltage to ground:
There should be less than 1 V. 
  • Poor ground (G701)
  • Faulty trunk key cylinder switch
  • An open in the wire
 
Trunk key cylinder switch in neutral Check for voltage to ground:
There should be 5 V or more. 
  • Faulty trunk key cylinder switch
  • Short to ground
 
T22 LT BLU Front passenger's door lock knob switch unlocked Check for voltage to ground:
There should be less than 1 V. 
  • Poor ground (G504)
  • 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
 
T23 WHT Driver's door lock knob switch unlocked Check for voltage to ground:
There should be less than 1 V. 
  • Poor ground (G501)
  • Faulty driver's door lock knob switch
  • An open in the wire
 
T24 LT GRN 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
 
T25 GRY Left rear door lock knob switch unlocked Check for voltage to ground:
There should be less than 1 V. 
  • Poor ground (G602)
  • 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
 
T26 PNK Right rear door lock knob switch unlocked Check for voltage to ground:
There should be less than 1 V. 
  • 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
 
T27 GRY Driver door lock switch unlocked Check for voltage to ground:
There should be less than 1 V. 
  • Poor ground (G503)
  • Faulty driver door lock switch
  • An open in the wire
 
Driver door lock switch in neutral Check for voltage to ground:
There should be 5 V or more. 
  • Faulty driver door lock switch
  • Short to ground
 
T28 GRN [BLU] Driver door lock switch locked Check for voltage to ground:
There should be less than 1 V. 
  • Poor ground (G503)
  • Faulty driver door lock switch
  • An open in the wire
 
Driver door lock switch in neutral Check for voltage to ground:
There should be 5 V or more. 
  • Faulty driver door lock switch
  • Short to ground
 
T29* PUR Front passenger's door lock switch unlocked Check for voltage to ground:
There should be less than 1 V. 
  • Poor ground (G504)
  • Faulty front passenger's door lock switch
  • An open in the wire
 
Front passenger's door lock switch in neutral Check for voltage to ground:
There should be 5 V or more. 
  • Faulty front passenger's door lock switch
  • Short to ground
 
T30* YEL Front passenger's door lock switch locked Check for voltage to ground:
There should be less than 1 V. 
  • Poor ground (G504)
  • Faulty front passenger's door lock switch
  • An open in the wire
 
Front passenger's door lock switch in neutral Check for voltage to ground:
There should be 5 V or more. 
  • Faulty front passenger's door lock switch
  • Short to ground
 
T31 BRN Driver door key cylinder switch unlocked Check for voltage to ground:
There should be less than 1 V. 
  • Poor ground (G501)
  • Faulty driver door key cylinder switch
  • An open in the wire
 
Driver door key cylinder switch in neutral Check for voltage to ground:
There should be 5 V or more. 
  • Faulty driver door key cylinder switch
  • Short to ground
 
T32 (With security) ORN [PNK] Driver door key cylinder switch locked Check for voltage to ground:
There should be less than 1 V. 
  • Poor ground (G501)
  • Faulty driver door key cylinder switch
  • An open in the wire
 
Driver door key cylinder switch in neutral Check for voltage to ground:
There should be 5 V or more. 
  • Faulty driver door key cylinder switch
  • Short to ground
 

[ ]: RHD type