Power Tailgate Control Unit 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 the power tailgate control unit connectors.
Power Tailgate Control Unit Connector A (24P) (female terminals):
Power Tailgate Control Unit Connector B (10P) (female terminals):
Power Tailgate Control Unit Connector C (5P) (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, 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 power tailgate control unit.

Cavity
Wire
Test condition
Test: Desired result
Possible cause if desired result is not obtained
B10
WHT
Under all conditions
Measure the voltage to ground:
There should be battery voltage.
An open or high resistance in the wire
B5
LT BLU
Under all conditions
Measure the voltage to ground:
There should be battery voltage.
An open or high resistance in the wire
C1
BRN
Under all conditions
Measure the voltage to ground:
There should be battery voltage.
An open or high resistance in the wire
A18
BRN
Power mode ON
Measure the voltage to ground:
There should be battery voltage.
An open or high resistance in the wire
C2
BLK
In all power modes
Measure the voltage to ground:
There should be less than 0.2 V.
Poor ground (G505 (except japan production) / G506 (japan production))
An open or high resistance in the ground wire
C4
GRY
In all power modes
Measure the voltage to ground:
There should be less than 0.2 V.
Poor ground (G505)
An open or high resistance in the ground wire
A1
PNK
Shift position/mode in P
Check for continuity to ground:
There should be continuity.
Faulty transmission range switch
An open or high resistance in the wire
Shift position/mode in any position other than P
Check for continuity to ground:
There should be no continuity.
Faulty transmission range switch
A short to ground in the wire