Safety Indicator System (Body Control Module and Gauge Control Module) Input Test
NOTE:
Before testing, troubleshoot the multiplex integrated control unit first, using B-CAN System Diagnosis Test Mode A.
Before testing, do the gauge control module self-diagnostic function to make sure the beeper and the indicators in the gauge control module work properly and the F-CAN line are OK.
Before testing, make sure the No. A18 (10 A) fuse in the under-hood fuse/relay box is OK.
Before testing, make sure the No. B7 (10 A) and No. B8 (15 A)*1/(20 A)*2 fuses in the under-dash fuse/relay box are OK.

*1: Except K20C1 engine
*2: K20C1 engine

Body Control Module

1.
Turn the vehicle to the OFF (LOCK) mode.

2.
Disconnect body control module connectors A, C, D, and E.

NOTE: All connector views are shown from the wire side of the female terminals.
3.
Inspect the connectors 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 are OK, go to step 4.

4.
Reconnect the connectors to the body control module, 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
C27
RED
Under all conditions
Measure the voltage to ground:
There should be battery voltage.
Blown No. A18 (10 A) fuse in the under-hood fuse/relay box
An open or high resistance in the wire
E1
BLU
Vehicle ON mode
Measure the voltage to ground:
There should be battery voltage.
Blown No. B8 (15 A)*1/(20 A)*2 fuse in the under-dash fuse/relay box
An open or high resistance in the wire
A2
BLK
In all power modes
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
A8
BLK
In all power modes
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
D22
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 battery voltage.
Faulty driver's door switch
A short to ground in the wire
D23
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 battery voltage.
Faulty front passenger's door switch
A short to ground in the wire
D24
BRN
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 battery voltage.
Faulty left rear door switch
A short to ground in the wire
D28
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 battery voltage.
Faulty right rear door switch
A short to ground in the wire
D27
WHT
Tailgate open
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty tailgate latch switch
Poor ground (G603) or an open in the ground wire
An open or high resistance in the wire
Tailgate closed
Measure the voltage to ground:
There should be battery voltage.
Faulty tailgate latch switch
A short to ground in the wire
*1: Except K20C1 engine
*2: K20C1 engine

Gauge Control Module

5.
Turn the vehicle to the OFF (LOCK) mode.

6.
Disconnect gauge control module connector A (32P).

7.
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 are OK, go to step 8.

8.
Reconnect the connector, 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 9.

Cavity
Wire
Test condition
Test: Desired result
Possible cause if desired result
is not obtained
A1
RED
Under all conditions
Measure the voltage to ground:
There should be battery voltage.
Blown No. A18 (10 A) fuse in the under-hood fuse/relay box
An open or high resistance in the wire
A17
BRN
Vehicle ON mode
Measure the voltage to ground:
There should be battery voltage.
Blown No. B7 (10 A) fuse in the under-dash fuse/relay box
An open or high resistance in the wire
A4
BLK
In all power modes
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
A32
BLK
In all power modes
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

9.
If multiple failures are found on more than one control unit, replace the body control module. If input failures are related to a particular control unit, replace the gauge control module.