Shift Lock System Circuit Troubleshooting

NOTE:  Check for PGM-FI DTCs and CVT DTCs. If any DTCs are present, troubleshoot those first.

PGM-FI System 

CVT System 

DTC (All DTCs)

• 1. Shift lock solenoid operation check:

  - 1. Connect the HDS to the DLC (A) located under the driver's side of the dashboard .

  - 2. Turn the vehicle to the ON mode.

  - 3. Make sure the HDS communicates with the PCM. If it does not, go to the DLC circuit troubleshooting .

  - 4. 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.

• 2. Brake pedal position switch circuit check:

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

  Signal	Threshold		Current conditions
  	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.

  NO 

  Troubleshoot the brake pedal position switch circuit .

• 3. Transmission range switch ATP-P line check:

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

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

  Do the current condition(s) match the threshold?

  YES 

  Go to step 4.

  NO 

  Go to step 12.

• 4. APP Sensor signal check:

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

  NOTE:  Do not press the accelerator pedal.

  Signal	Threshold		Current conditions
  	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 .

  NO 

  The APP Sensor signal is OK. Update the PCM if it does not have the latest software , or substitute a known-good PCM , and recheck. If the symptom goes away with a known-good PCM, replace the original PCM .

• 5. 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.

  NO 

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

• 6. 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 lever 12P 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 lever 12P connector: disconnected
  Test point 1	Shift lever 12P connector No. 12
  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.

  NO 

  Repair an open in the IG1 METER wire between the shift lever 12P connector and the under-dash fuse/relay box.

• 7. 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 more than 1 minute.

  SCS Short

  - 3. Disconnect the following connector.

  PCM connector A (51P)

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

  Test condition	Vehicle OFF (LOCK) mode
  	Shift lever 12P connector: disconnected
  	PCM connector A (51P): disconnected
  Test point 1	Shift lever 12P connector No. 11
  Test point 2	PCM connector A (51P) No. 12

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

  Is there continuity?

  YES 

  Go to step 8.

  NO 

  Repair an open in the SHIFT LOCK SOL wire between the shift lever 12P connector and the PCM.

• 8. Shorted wire check (SHIFT LOCK SOL line):

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

  Test condition	Vehicle OFF (LOCK) mode
  	Shift lever 12P connector: disconnected
  	PCM connector A (51P): disconnected
  Test point 1	Shift lever 12P connector No. 11
  Test point 2	Body ground

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

  Is there continuity?

  YES 

  Repair a short to ground in the SHIFT LOCK SOL wire between the shift lever 12P connector and the PCM.

  NO 

  Go to step 9.

• 9. Determine possible failure area (PCM, shift lock solenoid):

  - 1. Connect the following connector.

  PCM connector A (51P)

  - 2. Turn the vehicle to the ON mode, and make sure that the shift lever 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 lever 12P connector: disconnected
  	Shift lever position: P position/mode
  	Accelerator pedal: released
  Test point 1	Shift lever 12P connector No. 11
  Test point 2	Shift lever 12P connector No. 12

  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 

  Go to step 10.

  NO 

  Update the PCM if it does not have the latest software , or substitute a known-good PCM , and recheck. If the symptom goes away with a known-good PCM, replace the original PCM .

• 10. Open or shorted wire check (IG1 METER line on the shift lever):

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

  - 2. Remove the shift lever .

  - 3. Connect shift lever 12P connector.

  - 4. Disconnect the following connector.

  Shift lock solenoid 2P connector

  - 5. Turn the vehicle to the ON mode.

  - 6. 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 

  Go to step 11.

  NO 

  Failure in IG1 METER wire between the shift lock solenoid 2P connector and the shift lever 12P connector. Replace the shift lever/shift cable bracket assembly .

• 11. Open or shorted wire check (SHIFT LOCK SOL line on the shift lever):

  - 1. Make sure that the shift position is in P position/mode.

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

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

  Test condition	Vehicle ON mode
  	Shift lock solenoid 2P connector: disconnected
  	Shift position: P
  	Accelerator pedal: released
  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 .

  NO 

  Failure in SHIFT LOCK SOL wire between the shift lock solenoid 2P connector and the shift lever 12P connector. Replace the shift lever/shift cable bracket assembly .

• 12. 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. 5
  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
  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 .

  NO 

  Go to step 13.

• 13. 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 more than 1 minute.

  SCS Short

  - 4. Disconnect the following connector.

  PCM connector C (51P)

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

  Test condition	Vehicle OFF (LOCK) mode
  	Transmission range switch 10P connector: disconnected
  	PCM connector C (51P): disconnected
  Test point 1	Transmission range switch 10P connector No. 5
  Test point 2	PCM connector C (51P) No. 34

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

  Is there continuity?

  YES 

  The ATP-P wire is OK. Update the PCM if it does not have the latest software , or substitute a known-good PCM , and recheck. If the symptom goes away with a known-good PCM, replace the original PCM .

  NO 

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