Paddle Shifter Circuit Troubleshooting

WARNING: This page is about a different variant/trim than selected.

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 + line, and an asterisk (*2) applies to the paddle shifter - line.

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
Signal	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.

The failure is duplicated. Go to step 2.

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

Replace the paddle shifter .

Determine possible failure area (PADDLE_SW_UP line* 1/PADDLE_SW_DOWN line* 2, others):-1.

Temporarily install the steering wheel, then connect the following connector.

Cable reel connector D (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 + 4P connector* 1: disconnected
	Paddle shifter - 4P connector* 2: disconnected
Test point 1	Paddle shifter + 4P connector (female terminals) No. 2* 1:
	Paddle shifter - 4P connector (female terminals) No. 3* 2:
Test point 2	Body ground

Courtesy of HONDA, U.S.A., INC.

Is there battery voltage?

YES

Go to step 4.

Go to step 5.

Open wire check (STRG_GND line)

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

-2. Measure the resistance between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Paddle shifter + 4P connector* 1: disconnected
	Paddle shifter - 4P connector* 2: disconnected
Test point 1	Paddle shifter + 4P connector (female terminals) No. 4* 1:
	Paddle shifter - 4P connector (female terminals) No. 1* 2:
Test point 2	Body ground

Courtesy of HONDA, U.S.A., INC.

Is there 1.0 Ω 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 replace the original PCM .

Repair an open in the STRG_GND wire between the paddle shifter and ground (G401), or repair poor ground (G401).

Shorted wire check (PADDLE_SW_UP line* 1/PADDLE_SW_DOWN line* 2):-1.

Turn the vehicle to the OFF (LOCK) mode.

-2. Jump the SCS line with the HDS, and wait more than 1 minute.

-3. Disconnect the following connector.

PCM connector A (50P)

-4. Measure the resistance between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Paddle shifter + 4P connector* 1: disconnected
	Paddle shifter - 4P connector* 2: disconnected
	PCM connector A (50P): disconnected
Test point 1	Paddle shifter + 4P connector (female terminals) No. 2* 1:
	Paddle shifter - 4P connector (female terminals) No. 3* 2:
Test point 2	Body ground

Courtesy of HONDA, U.S.A., INC.

Is there 1 MΩ or more?

YES

The PADDLE_SW_UP wire* 1/PADDLE_SW_DOWN wire* 2 is not shorted. Go to step 6.

Repair a short to ground in the PADDLE_SW_UP wire* 1/PADDLE_SW_DOWN wire* 2 between the paddle shifter and the PCM.

Open wire check (PADDLE_SW_UP line* 1/PADDLE_SW_DOWN line* 2):-1.

Measure the resistance between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Paddle shifter + 4P connector* 1: disconnected
	Paddle shifter - 4P connector* 2: disconnected
	PCM connector A (50P): disconnected
Test point 1	Paddle shifter + 4P connector (female terminals) No. 2* 1:
Test point 2	PCM connector A (50P) No. 12 * 1

Test point 1	Paddle shifter - 4P connector (female terminals) No. 3* 2:
Test point 2	PCM connector A (50P) No. 29 * 2

Courtesy of HONDA, U.S.A., INC.

Is there 1.0 Ω or less?

YES

The PADDLE_SW_UP wire* 1/PADDLE_SW_DOWN wire* 2 is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or replace the original PCM .

Repair an open in the PADDLE_SW_UP wire* 1/PADDLE_SW_DOWN wire* 2 between the paddle shifter and the PCM.