Turn Signal/Hazard Warning Lights (Body Control Module) Input Test
NOTE:
If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.
Before testing, make sure the No. A13 (15 A) and No. A18 (10 A) fuses in the under-hood fuse/relay box are OK.
Before testing, make sure the No. B8 (15 A)*1/(20 A)*2 fuse in the under-dash fuse/relay box is OK.

*1: Except K20C1 engine
*2: K20C1 engine

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

2.
Disconnect body control module connectors A, B, C, 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.
With the connectors still disconnected, 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
B17
GRY
Connect 12 volt battery power*4 to B17 with a jumper wire.
Check the turn signal lights operation:
The left front turn signal light*1 should come on.
Faulty under-dash fuse/relay box
Blown bulb
Poor ground (G301) or an open in the ground wire
An open or high resistance in the wire
Check the turn signal lights operation:
The left side turn signal light*3 should come on.
Faulty LED
Poor ground (G501) or an open in the ground wire
An open or high resistance in the wire
Check the turn signal lights operation:
The left rear turn signal light should come on.
Faulty under-dash fuse/relay box
Blown bulb
Poor ground (G603) or an open in the ground wire
An open or high resistance in the wire
B18*2
LT BLU
Connect 12 volt battery power*4 to B18 with a jumper wire.
Check the turn signal lights operation:
The left front turn signal light should come on.
Faulty LED
Poor ground (G301) or an open in the ground wire
An open or high resistance in the wire
B34
TAN
Connect 12 volt battery power*4 to B34 with a jumper wire.
Check the turn signal lights operation:
The right front turn signal light*1 should come on.
Faulty under-dash fuse/relay box
Blown bulb
Poor ground (G302) or an open in the ground wire
An open or high resistance in the wire
Check the turn signal lights operation:
The right side turn signal light*3 should come on.
Faulty LED
Poor ground (G505) or an open in the ground wire
An open or high resistance in the wire
Check the turn signal lights operation:
The right rear turn signal light should come on.
Faulty under-dash fuse/relay box
Blown bulb
Poor ground (G604) or an open in the ground wire
An open or high resistance in the wire
B35*2
GRN
Connect 12 volt battery power*4 to B35 with a jumper wire.
Check the turn signal lights operation:
The right front turn signal light should come on.
Faulty LED
Poor ground (G302) or an open in the ground wire
An open or high resistance in the wire
*1: Without LED headlight
*2: With LED headlight
*3: With mirror turn
*4: Use a fused jumper wire with an appropriate amperage fuse.

5.
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, replace the body control module.

Cavity
Wire
Test condition
Test: Desired result
Possible cause if desired result
is not obtained
A1
YEL
Under all conditions
Measure the voltage to ground:
There should be battery voltage.
Blown No. A13 (15 A) fuse in the under-hood fuse/relay box
An open or high resistance in the wire
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
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 (G503)
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
*1: Except K20C1 engine
*2: K20C1 engine