Turn Signal/Hazard Warning Lights (Body Control Module) Input Test
NOTE:
Make sure the fuses associated with the system is OK.
If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.

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

2.
Disconnect body control module connectors.
Body Control Module Connector A (14P) (female terminals):
Body Control Module Connector B (36P) (female terminals):
Body Control Module Connector C (28P) (female terminals):
Body Control Module Connector E (24P) (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, 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
A1
RED
Under all conditions
Measure the voltage to ground:
There should be battery voltage.
An open or high resistance in the wire
C27
WHT
Under all conditions
Measure the voltage to ground:
There should be battery voltage.
An open or high resistance in the wire
E1
BLU
Vehicle ON mode
Measure the voltage to ground:
There should be battery voltage.
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 (G401)
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 (G401)
An open or high resistance in the ground wire
C2
GRN
Hazard warning switch pressed
Measure the voltage to ground:
There should be less than 0.2 V.
Faulty hazard warning switch
Poor ground (G402)
An open or high resistance in the ground wire
Hazard warning switch released
Measure the voltage to ground:
There should be battery voltage.
Faulty hazard warning switch
A short to ground in the wire
E6
•
C3
LT GRN
•
BLK
Turn signal switch in left position
Measure the voltage between terminals E6 and C3:
There should be less than 0.2 V.
Faulty turn signal switch
An open or high resistance in the wire
Turn signal switch in right or neutral position
Measure the voltage between terminals E6 and C3:
There should be battery voltage.
Faulty turn signal switch
A short to ground in the wire
E5
•
C3
RED
•
BLK
Turn signal switch in right position
Measure the voltage between terminals E5 and C3:
There should be less than 0.2 V.
Faulty turn signal switch
An open or high resistance in the ground wire
Turn signal switch in left or neutral position
Measure the voltage between terminals E5 and C3:
There should be battery voltage.
Faulty turn signal switch
A short to ground in the wire

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

6.
Disconnect 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, replace the body control module.

Cavity
Wire
Test condition
Test: Desired result
Possible cause if desired result is not obtained
B17
LT BLU
Under all conditions
Connect terminal B17 and A1 with a jumper wire:
The left rear turn signal light should come on.
Faulty LED
Poor ground (G505) or an open in the ground wire
An open or high resistance in the wire
B18
BLU
Under all conditions
Connect terminal B17 and A1 with a jumper wire:
The left front turn signal light and left side turn signal light* should come on.
Faulty LED
Poor ground (G351, G401*) or an open in the ground wire
An open or high resistance in the wire
B34
LT GRN
Under all conditions
Connect terminal B17 and A1 with a jumper wire:
The right rear turn signal light should come on.
Faulty LED
Poor ground (G504) or an open in the ground wire
An open or high resistance in the wire
B35
BRN
Under all conditions
Connect terminal B17 and A1 with a jumper wire:
The right front turn signal light and right side turn signal light* should come on.
Faulty LED
Poor ground (G251, G402*) or an open in the ground wire
An open or high resistance in the wire
*: With side turn signal light