Exterior Lights (MICU) Input Test

NOTE: Before performing the input tests, check the No. 7*, No. 12, No. 13, No.15, No. 16, No. 17, No. 18, No. 19, No. 36*, and No. 21 fuses in the under-dash fuse/relay box.
*: KG model

1.Turn the ignition switch OFF.

2.Remove the left kick panel.

3.Disconnect the driver's under-dash fuse/relay box connectors.

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
 
E19 RED Under all conditions Connect battery power to the E19 terminal:
The taillights, rear side marker lights, and license plate lights should come on. 
  • Poor ground (G701)
  • Blown bulb
  • An open in the wire
 
F3 RED Under all conditions Connect battery power to the F3 terminal:
The right front position light should come on. 
  • Poor ground (G201)
  • Blown bulb
  • An open in the wire
 
F4 GRN Under all conditions Connect battery power to the F4 terminal:
The right headlight (high beam) should come on. 
  • Poor ground (G201)
  • Blown bulb
  • An open in the wire
 
F22 WHT Under all conditions Connect battery power to the F22 terminal:
The right headlight (low beam) should come on. 
  • Poor ground (G201)
  • Blown bulb
  • An open in the wire
 
G5 RED Under all conditions Connect battery power to the G5 terminal:
The left front position light should come on. 
  • Poor ground (G301)
  • Blown bulb
  • An open in the wire
 
M3
(KG model) 		RED Under all conditions Check for voltage between M3 terminal and body ground:
There should be battery voltage. 
  • Blown No. 4 (H/L) (50 A) fuse in the under-hood fuse/relay box
  • Blown No. 19 (15 A) fuse and No. 15 (7.5 A) in the under-dash fuse/relay box
  • Faulty MICU
  • An open in the wire
 
G15 PNK Under all conditions Connect battery power to the G15 terminal:
The left headlight (high beam) should come on. 
  • Poor ground (G301)
  • Blown bulb
  • An open in the wire
 
G17 PUR Under all conditions Connect battery power to the G17 terminal:
The left headlight (low beam) should come on. 
  • Poor ground (G301)
  • Blown bulb
  • An open in the wire
 
Q10
(KG model) 		WHT Under all conditions Check for voltage between Q10 terminal and body ground:
There should be battery voltage. 
  • Blown No. 2 (OP) (80 A) fuse in the under-hood fuse/relay box
  • Blown No. 7 (10 A) fuse in the under-dash fuse/relay box
  • Faulty MICU
  • An open in the wire
 

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
 
S1
·
S5 		ORN
·
BLK 		Combination light switch OFF Check for voltage between S1 and S5 terminals:
There should be less than 0.5 V. 
  • Faulty combination light switch
  • An open in the wire
 
Combination light switch in any other position than OFF Check for voltage between S1 and S5 terminals:
There should be 5 V or more. 
  • Faulty combination light switch
  • Short to ground
 
S7 BLU Front/rear fog light switch (FRONT/REAR FOG or REAR FOG position) ON Check for voltage between S7 and S5 terminals:
There should be less than 0.5 V. 
  • Faulty front/rear fog light switch
  • An open in the wire
 
Front/rear fog light switch (FRONT/REAR FOG or REAR FOG position) OFF Check for voltage between S7 and S5 terminals:
There should be 5 V or more. 
  • Faulty front/rear fog light switch
  • Short to ground
 
S11
·
S5 		PNK
·
BLK 		Combination light switch (Headlight position) ON Check for voltage between S11 and S5 terminals:
There should be less than 0.5 V. 
  • Faulty combination light switch
  • An open in the wire
 
Combination light switch OFF Check for voltage between S11 and S5 terminals:
There should be 5 V or more. 
  • Faulty combination light switch
  • Short to ground
 
S12
·
S5 		RED
·
BLK 		Combination light switch lever pulled (Passing) Check for voltage between S12 and S5 terminals:
There should be less than 0.5 V. 
  • Faulty combination light switch
  • An open in the wire
 
Combination light switch lever released from passing position Check for voltage between S12 and S5 terminals:
There should be 5 V or more. 
  • Faulty combination light switch
  • Short to ground
 
S13
·
S5 		GRY
·
BLK 		Combination light switch (SMALL position) ON Check for voltage between S13 and S5 terminals:
There should be less than 0.5 V. 
  • Faulty combination light switch
  • An open in the wire
 
Combination light switch OFF Check for voltage between S13 and S5 terminals:
There should be 5 V or more. 
  • Faulty combination light switch
  • Short to ground
 
S14 PUR Front/rear fog light switch (FRONT FOG position) ON Check for voltage between S14 and S5 terminals:
There should be less than 0.5 V. 
  • Faulty front/rear fog light switch
  • An open in the wire
 
Front/rear fog light switch (FRONT FOG position) OFF Check for voltage between S14 and S5 terminals:
There should be 5 V or more. 
  • Faulty front/rear fog light switch
  • Short to ground
 
S16
·
S5 		LT BLU
·
BLK 		Combination light switch (Dimmer) in high beam position Check for voltage between S16 and S5 terminals:
There should be less than 0.5 V. 
  • Faulty combination light switch
  • An open in the wire
 
Combination light switch (Dimmer) in low beam position Check for voltage between S16 and S5 terminals:
There should be 5 V or more. 
  • Faulty combination light switch
  • Short to ground
 
T8
(KG model) 		GRN Ignition switch ON (IG2) Connect T8 and body ground with a jumper wire:
The front position lights, taillights and license lights should come on. 
  • Faulty MICU
  • Faulty daytime running light relay
  • An open in the wire