Power Tailgate Symptom Troubleshooting - Hands free access function does not work
Hands free access function does not work
NOTE:
Check the fuses and relays associated with the system, and check for a short in the related lines.
Before troubleshooting, check for B-CAN DTCs. If any DTC is indicated, troubleshoot the indicated DTC first. The system stops the hands-free access function when the keyless access control unit has a DTC stored for such as the LF/RF antenna and so on.
Make sure the power tailgate opens and closes normally from the driver's power tailgate switch, tailgate outer handle switch and the keyless remote.
The power tailgate system is programmed to protect the system from overheating. After the system is operated continuously, it may not respond to the inputs for a certain period of time. In such cases, try to reproduce the failure again after waiting for a while.
1.
Parameter check:

Parameter check
?1.
Connect the HDS to the data link connector (DLC).

?2.
While checking the below HDS parameter, use a forward and backward kicking motion under the center of the rear bumper.
Signal
Current conditions
Value
Unit
Hands Free Access Signal Detected
    

Dose the display value change during the kicking motion?

     
YES
     
     
     
Go to step 2.
     
NO
     
     
     
Go to step 4.
2.
Keyless access system check:

Keyless access system check
?1.
Select HISTORY DATA from the KEYLESS ACCESS CONTROL UNIT mode menu with the HDS.

  

?2.
Check the input history of the hands free access power tailgate control unit/sensor.

Is information of the history data normally?

     
YES
     
     
     
     
NO
     
     
     
Go to step 3.
3.
Open wire check (KICK SNSR line) 1:

Open wire check (KICK SNSR line) 1
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
Hands free access power tailgate control unit/sensor 3P connector
Body control module connector G (32P)

?3.
Measure the resistance between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Hands free access power tailgate control unit/sensor 3P connector: disconnected
Body control module connector G (32P): disconnected
Test point 1
Hands free access power tailgate control unit/sensor 3P connector (male terminals) No. 1:
Test point 2
Body control module connector G (32P) No. 24


Is there 1.0 ? or less?

     
YES
     
     
     
The KICK SNSR wire is OK. Replace the body control module.?
     
NO
     
     
     
Repair an open or high resistance in the wire.?
4.
Determine possible failure area (Hands free access power tailgate control unit/sensor, KICK SNSR line):

Determine possible failure area (Hands free access power tailgate control unit/sensor, KICK SNSR line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
Hands free access power tailgate control unit/sensor 3P connector

?3.
Connect terminals A and B with a jumper wire.
Terminal A
Hands free access power tailgate control unit/sensor 3P connector (male terminals) No. 1:
Terminal B
Body ground


?4.
Connect and disconnect the jumper wire multiple times and check the parameter(s) below with the HDS.
Signal
Current conditions
Value
Unit
Hands Free Access Signal Detected
    

Is information value inverted normally?

     
YES
     
     
     
Go to step 5.
     
NO
     
     
     
Go to step 7.
5.
Determine possible failure area (Hands free access power tailgate control unit/sensor, ?B RR FOG, GND lines):

Determine possible failure area (Hands free access power tailgate control unit/sensor, ?B RR FOG, GND lines)
?1.
Disconnect the following connector.
Hands free access power tailgate control unit/sensor 3P connector

?2.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Hands free access power tailgate control unit/sensor 3P connector: disconnected
Test point 1
Hands free access power tailgate control unit/sensor 3P connector (male terminals) No. 2:
Test point 2
Hands free access power tailgate control unit/sensor 3P connector (male terminals) No. 3:


Is there battery voltage?

     
YES
     
     
     
     
NO
     
     
     
Go to step 6.
6.
Open wire check (?B RR FOG line):

Open wire check (?B RR FOG line)
?1.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Hands free access power tailgate control unit/sensor 3P connector: disconnected
Test point 1
Hands free access power tailgate control unit/sensor 3P connector (male terminals) No. 2:
Test point 2
Body ground


Is there battery voltage?

     
YES
     
     
     
Repair an open or high resistance in the GND wire or poor ground (G505 (except japan production) / G506 (japan production)).?
     
NO
     
     
     
Repair an open or high resistance in the ?B RR FOG wire.?
7.
Shorted wire check (KICK SNSR line):

Shorted wire check (KICK SNSR line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
Power tailgate control unit connector A (24P)

?3.
Measure the resistance between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Hands free access power tailgate control unit/sensor 3P connector: disconnected
Body control module connector G (32P): disconnected
Power tailgate control unit connector A (24P): disconnected
Test point 1
Hands free access power tailgate control unit/sensor 3P connector (male terminals) No. 1:
Test point 2
Body ground


Is there 1.0 M? or more?

     
YES
     
     
     
Go to step 8.
     
NO
     
     
     
Repair a short to ground in the wire.?
8.
Open wire check (KICK SNSR line) 2:

Open wire check (KICK SNSR line) 2
?1.
Measure the resistance between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Hands free access power tailgate control unit/sensor 3P connector: disconnected
Body control module connector G (32P): disconnected
Power tailgate control unit connector A (24P): disconnected
Test point 1
Hands free access power tailgate control unit/sensor 3P connector (male terminals) No. 1:
Test point 2
Power tailgate control unit connector A (24P) No. 13


Is there 1.0 ? or less?

     
YES
     
     
     
Go to step 9.
     
NO
     
     
     
Repair an open or high resistance in the wire.?
9.
Power tailgate control unit check (substitution):

Power tailgate control unit check (substitution)
?1.
Substitute a known-good power tailgate control unit, and recheck.

Is the system OK?

     
YES
     
     
     
     
NO