Shift Lock System Circuit Troubleshooting

NOTE: Check for PGM-FI system DTCs and Gear unit control system DTCs. If any DTCs are present, troubleshoot those first.

PGM-FI System

DTC Description	Confirmed DTC	Pending DTC

DTC (PGM-FI)

Gear Unit Control System

DTC Description	Confirmed DTC	Pending DTC	Freeze Frame

DTC (Gear)

Shift lock solenoid operation check
-1. Connect the HDS to the DLC.

- 2. Select Shift Lock Solenoid Test in the Miscellaneous Test Menu, and check that the shift lock solenoid operates with the HDS.

Shift Lock Solenoid Test

Does the shift lock solenoid work properly?

YES

The shift lock solenoid is OK. Go to step 2.

NO

Go to step 5.

Brake pedal position switch circuit check

-1. Check the parameter(s) below with the HDS while pressing the brake pedal.

Signal	Threshold		Current conditions
Signal	Values	Unit	Values	Unit
Brake Switch	ON

Do the current condition(s) match the threshold?

YES

The brake pedal position switch circuit is OK. Go to step 3.

Troubleshoot the brake pedal position switch circuit - Refer to: VSA DTC Troubleshooting: 68-11 (2014 2015), or VSA DTC Troubleshooting: 68-11 (2017) .

Transmission range switch ATP P line check

-1. Check the parameter(s) below with the HDS with the shift position/mode in P.

Signal	Threshold		Current conditions
Signal	Values	Unit	Values	Unit
A/T P Switch	ON

Do the current condition(s) match the threshold?

YES

Go to step 4.

Go to step 10.

APP Sensor signal check

-1. Check the parameter(s) below with the HDS.

NOTE: Do not press the accelerator pedal.

Signal	Threshold		Current conditions
Signal	Values	Unit	Values	Unit
APP Sensor (%)	More than 5	%
APP Sensor A (V)	Higher than 1.16	V

Do the current condition(s) match the threshold?

YES

Check the APP sensor .

The APP Sensor signal is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM - Refer to: PCM Removal and Installation (2014 2015), or PCM Removal and Installation (2017) , and recheck. If the symptom goes away with a known-good PCM, replace the original PCM - Refer to: PCM Removal and Installation (2014 2015), or PCM Removal and Installation (2017) .

Fuse check

-1. Check the following fuse.

Fuse	No. B5 (10 A)
Location	Under-dash fuse/relay box

Is the fuse OK?

YES

The fuse is OK. Go to step 6.

Replace the No. B5 (10 A) fuse, and recheck. If the fuse blows again, repair a short to body ground in the No. B5 (10 A) fuse circuit.

Open wire check (IG1 METER line)

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

- 2. Remove the center console.

- 3. Disconnect the following connector.

Shift lock solenoid 2P connector

- 4. Turn the vehicle to the ON mode.

- 5. Measure the voltage between test points 1 and 2.

Test condition	Vehicle ON mode
	Shift lock solenoid 2P connector: disconnected
Test point 1	Shift lock solenoid 2P connector No. 2
Test point 2	Body ground

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

Is there battery voltage?

YES

The IG1 METER wire is OK. Go to step 7.

Repair an open in the IG1 METER wire between the shift lock solenoid 2P connector and the under-dash fuse/relay box.

Open wire check (SHIFT LOCK SOL line)

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

- 2. Jump the SCS line with the HDS, and wait for at least 1 minute.

- 3. Disconnect the following connector.

'14-15PCM connector A (51P)

'17PCM connector A (50P)

- 4. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Shift lock solenoid 2P connector: disconnected
	'14-15PCM connector A (51P): disconnected
	'17PCM connector A (50P): disconnected
Test point 1	Shift lock solenoid 2P connector No. 1
Test point 2	'14-15PCM connector A (51P) No. 21 - Refer to: PCM Connector for Inputs and Outputs (2014 2015), or PCM Connector for Inputs and Outputs (2017)
	'17PCM connector A (50P) No. 14 - Refer to: PCM Connector for Inputs and Outputs (2014 2015), or PCM Connector for Inputs and Outputs (2017)

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

Is there continuity?

YES

Go to step 8.

Repair an open in the SHIFT LOCK SOL wire between the shift lock solenoid and the PCM.

Shorted wire check (SHIFT LOCK SOL line)

-1. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Shift lock solenoid 2P connector: disconnected
	'14-15PCM connector A (51P): disconnected
	'17PCM connector A (50P): disconnected
Test point 1	Shift lock solenoid 2P connector No. 1
Test point 2	Body ground

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

Is there continuity?

YES

Repair a short to body ground in the SHIFT LOCK SOL wire between the shift lock solenoid and the PCM.

Go to step 9.

Determine possible failure area (PCM, shift lock solenoid)

-1. Connect the following connector.

'14-15PCM connector A (51P)

'17PCM connector A (50P)

- 2. Turn the vehicle to the ON mode, and make sure that the transmission is in P position/mode.

NOTE: Do not press the accelerator pedal while measuring the voltage.

- 3. Measure the voltage between test points 1 and 2.

Test condition	Vehicle ON mode
	Shift lock solenoid 2P connector: disconnected
Test point 1	Shift lock solenoid 2P connector No. 1
Test point 2	Shift lock solenoid 2P connector No. 2

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

Is there battery voltage while pressing the brake pedal, and 0 V when the brake pedal is released?

YES

Check the shift lock mechanism. If the mechanism is OK, replace the shift lock solenoid .

Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM - Refer to: PCM Removal and Installation (2014 2015), or PCM Removal and Installation (2017) , and recheck. If the symptom goes away with a known-good PCM, replace the original PCM - Refer to: PCM Removal and Installation (2014 2015), or PCM Removal and Installation (2017) .

Transmission range switch ATP P line input check

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

- 2. Disconnect the following connector.

Transmission range switch 10P connector

- 3. Connect terminals A and B with a jumper wire.

Terminal A	Transmission range switch 10P connector No. 9
Terminal B	Body ground

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

- 4. Turn the vehicle to the ON mode.

- 5. Check the parameter(s) below.

Signal	Threshold		Current conditions
Signal	Values	Unit	Values	Unit
A/T P Switch	ON

Do the current condition(s) match the threshold?

YES

Transmission range switch ATP P line is OK. Replace the transmission range switch .

Go to step 11.

Open wire check (ATP P line)

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

- 2. Remove the jumper wire.

- 3. Jump the SCS line with the HDS, and wait for at least 1 minute.

- 4. Disconnect the following connector.

'14-15PCM connector B (51P)

'17PCM connector E (80P)

- 5. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Transmission range switch 10P connector: disconnected
	'14-15PCM connector B (51P): disconnected
	'17PCM connector E (80P): disconnected
Test point 1	Transmission range switch 10P connector No. 9
Test point 2	'14-15PCM connector B (51P) No. 21 - Refer to: PCM Connector for Inputs and Outputs (2014 2015), or PCM Connector for Inputs and Outputs (2017)
	'17PCM connector E (80P) No. 67 - Refer to: PCM Connector for Inputs and Outputs (2014 2015), or PCM Connector for Inputs and Outputs (2017)

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

Is there continuity?

YES

The ATP P wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM - Refer to: PCM Removal and Installation (2014 2015), or PCM Removal and Installation (2017) , and recheck. If the symptom goes away with a known-good PCM, replace the original PCM - Refer to: PCM Removal and Installation (2014 2015), or PCM Removal and Installation (2017) .

Repair an open in the ATP P wire between the transmission range switch and the PCM.