Paddle Shifter Circuit Troubleshooting
Paddle Shifter Circuit Troubleshooting
SRS components are located in this area. Review the SRS component locations and the precautions and procedures before doing repair or service.

NOTE: Information marked with an asterisk (*1) applies to the paddle shifter + (upshift switch) circuit, and an asterisk (*2) applies to the paddle shifter - (downshift switch) circuit.

1.
Problem verification:

Problem verification
?1.
Connect the HDS to the DLC.

?2.
Turn the vehicle to the ON mode.

?3.
Check the parameter(s) below with the HDS when repeatedly pressing and releasing the paddle shifter.
Signal
Current conditions
Values
Unit
Upshift Switch (ST)
    
Downshift Switch (ST)
    

Is ON indicated when you are pressing the paddle shifter and OFF with the paddle shifter released?

     
YES
     
     
     
Intermittent failure, the system is OK at this time.?
     
NO
     
     
     
The failure is duplicated. Go to step 2.
2.
Paddle shifter check:

Paddle shifter check
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Remove the paddle shifter.

?3.
Test the paddle shifter.

Is the paddle shifter OK?

     
YES
     
     
     
The paddle shifter is OK. Go to step 3.
     
NO
     
     
     
3.
Determine possible failure area (PADDLE SW UP line*1/PADDLE SW DOWN line*2, others):

Determine possible failure area (PADDLE SW UP line/PADDLE SW DOWN line, others)
?1.
Connect the following connector.
Cable reel connector C (20P)

?2.
Turn the vehicle to the ON mode.

?3.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle ON mode
 
Paddle shifter + (upshift switch) 4P connector*1: disconnected
 
Paddle shifter - (downshift switch) 4P connector*2: disconnected
Test point 1
Paddle shifter + (upshift switch) 4P connector (female terminals) No. 2*1:
 
Paddle shifter - (downshift switch) 4P connector (female terminals) No. 3*2:
Test point 2
Body ground


Is there about 5.0 V?

     
YES
     
     
     
Go to step 4.
     
NO
     
     
     
Go to step 5.
4.
Open wire check (STRG GND line):

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

?2.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
Paddle shifter + (upshift switch) 4P connector*1: disconnected
 
Paddle shifter - (downshift switch) 4P connector*2: disconnected
Test point 1
Paddle shifter + (upshift switch) 4P connector (female terminals) No. 4*1:
 
Paddle shifter - (downshift switch) 4P connector (female terminals) No. 1*2:
Test point 2
Body ground


Is there 1.0 ? or less?

     
YES
     
     
     
The STRG GND wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good TCM, then recheck. If the symptom goes away and the TCM was substituted, replace the original TCM.?
     
NO
     
     
     
Repair an open in the STRG GND wire between the paddle shifter and ground (G502), or repair poor ground (G502).?
5.
Shorted wire check (PADDLE SW UP line*1/PADDLE SW DOWN line*2):

Shorted wire check (PADDLE SW UP line/PADDLE SW DOWN line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
TCM 50P connector

?3.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
Paddle shifter + (upshift switch) 4P connector*1: disconnected
 
Paddle shifter - (downshift switch) 4P connector*2: disconnected
 
TCM 50P connector: disconnected
Test point 1
Paddle shifter + (upshift switch) 4P connector (female terminals) No. 2*1:
 
Paddle shifter - (downshift switch) 4P connector (female terminals) No. 3*2:
Test point 2
Body ground


Is there 1 M? or more?

     
YES
     
     
     
The PADDLE SW UP wire*1/PADDLE SW DOWN wire*2 is not shorted. Go to step 6.
     
NO
     
     
     
Repair a short to ground in the PADDLE SW UP wire*1/PADDLE SW DOWN wire*2 between the paddle shifter and the TCM.?
6.
Open wire check (SUPP/PADDLE SW UP line*1/SDNP/PADDLE SW DOWN line*2):

Open wire check (SUPP/PADDLE SW UP line/SDNP/PADDLE SW DOWN line)
?1.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
Paddle shifter + (upshift switch) 4P connector*1: disconnected
 
Paddle shifter - (downshift switch) 4P connector*2: disconnected
 
TCM 50P connector: disconnected
Test point 1
Paddle shifter + (upshift switch) 4P connector (female terminals) No. 2*1:
 
Paddle shifter - (downshift switch) 4P connector (female terminals) No. 3*2:
Test point 2
TCM 50P connector No. 34*1
 
TCM 50P connector No. 45*2


Is there 1.0 ? or less?

     
YES
     
     
     
The SUPP/PADDLE SW UP wire*1/SDNP/PADDLE SW DOWN wire*2 is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good TCM, then recheck. If the symptom goes away and the TCM was substituted, replace the original TCM.?
     
NO
     
     
     
Repair an open in the SUPP/PADDLE SW UP wire*1/SDNP/PADDLE SW DOWN wire*2 between the paddle shifter and the TCM.?