DTC P16F3

DTC P16F3  : Starter Cut Relay 1 Control Circuit Low Voltage

NOTE:  Before you troubleshoot, review the general troubleshooting information .

DTC (PGM-FI)

1. Engine starting check

   -1. Try to start the engine.

   Does the engine start?

   YES 

   Go to step 2.

   NO 

   Go to step 4.

2. Problem verification

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

   -2. Turn the vehicle to the ON mode.

   -3. Clear the DTC with the HDS.

   -4. Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC	Freeze Frame
   P16F3 Starter Cut Relay 1 Control Circuit Low Voltage

   Is DTC P16F3 indicated?

   YES 

   The failure is duplicated. Go to step 3.

   NO 

   Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at starter cut relay 1, and the PCM. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot .

3. Shorted wire check (ST CUT RLY1 CL- line)

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

   -2. Jump the SCS line with the HDS.

   -3. Disconnect the following connector.

   PCM connector A (51P)

   -4. Remove starter cut relay 1 (A) from the under-hood fuse/relay box.

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

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

   Test condition	Vehicle OFF (LOCK) mode
   	PCM connector A (51P): disconnected
   	Starter cut relay 1: disconnected
   Test point 1	PCM connector A (51P) No. 51
   Test point 2	Body ground

   Is there 1.0 MΩ or more?

   YES 

   The ST CUT RLY1 CL- wire is OK. Update the PCM if it does not have the latest software, or substitute a known-good PCM , then recheck. If DTC P16F3 goes away and the PCM was updated, troubleshooting is complete. If DTC P16F3 goes away and the PCM was substituted, replace the original PCM .

   NO 

   Repair a short in the ST CUT RLY1 CL- wire between the PCM (A51) and starter cut relay 1. Also replace the under-hood fuse/relay box if needed.

4. Starter system check

   -1. Turn the vehicle to the ON mode.

   -2. CVT: Shift the transmission to P or N position/mode.

   M/T: Move the shift lever to neutral and press the clutch pedal.

   -3. Start the engine, check the parameter (s) below with the HDS.

   Signal	Threshold		Current Conditions
   	Values	Unit	Values	Unit
   STARTER CUT CTRL RETURN	ON

   Do the current condition (s) match the threshold when the vehicle is starting?

   YES 

   Go to step 5.

   NO 

   Go to the symptom troubleshooting for engine will not start .

5. Determine possible failure area (PCM, others)

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

   -2. Jump the SCS line with the HDS

   -3. Disconnect the following connector.

   PCM connector A (51P)

   -4. Turn the vehicle to the ON mode.

   -5. CVT: Shift the transmission to P or N position/mode.

   M/T: Move the shift lever to neutral and press the clutch pedal.

   -6. Measure the voltage between test points 1 and 2.

   Test condition	Vehicle ON mode
   	PCM connector A (51P): disconnected
   Test point 1	PCM connector A (51P) No. 51
   Test point 2	Body ground

   Is there battery voltage?

   YES 

   Update the PCM if it does not have the latest software, or substitute a known-good PCM , then recheck. If DTC P16F3 goes away and the PCM was updated, troubleshooting is complete. If DTC P16F3 goes away and the PCM was substituted, replace the original PCM .

   NO 

   Go to step 6.

6. Open wire check (ST CUT RLY1 CL- line)

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

   -2. Remove starter cut relay 1 (A) from the under-hood fuse/relay box.

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

   -3. Turn the vehicle to the ON mode.

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

   Test condition	Vehicle ON mode
   	PCM connector A (51P): disconnected
   	Starter cut relay 1: disconnected
   Test point 1	Starter cut relay 1 4P socket No. 4 (under-hood fuse/relay box)
   Test point 2	PCM connector A (51P) No. 51

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

   Is there continuity?

   YES 

   ST CUT RLY1 CL- wire is OK. Go to step 7.

   NO 

   Repair an open in the ST CUT RLY1 CL- wire between the PCM (A51) and starter cut relay 1.

7. Fuse check

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

   -2. Check the following fuse.

   Fuse	No. C26 (7.5 A)
   Location	Under-dash fuse/relay box

   Is the fuse OK?

   YES 

   Go to step 8.

   NO 

   Check for a short in the IG1 ST CUT RLY wire between the No. C26 (7.5 A) fuse and starter cut relay 1, and repair it as needed. Also replace the No. C26 (7.5 A) fuse.

8. Open wire check (IG1 ST CUT RLY line)

   -1. Disconnect the following connector.

   Under-dash fuse/relay box connector Q (40P)

   -2. Connect terminals A and B with a jumper wire.

   Terminal A	Under-dash fuse/relay box connector Q (40P) No. 10
   Terminal B	Body ground

   -3. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	PCM connector A (51P): disconnected
   	Starter cut relay 1: disconnected
   	Under-dash fuse/relay box connector Q (40P): disconnected
   	Under-dash fuse/relay box connector Q (40P) No. 10: jumped to body ground
   Test point 1	Starter cut relay 1 4P socket No. 3
   Test point 2	Body ground

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

   Is there continuity?

   YES 

   The IG1 ST CUT RLY wire is OK. Replace the under-dash fuse/relay box .

   NO 

   Repair an open in the IG1 ST CUT RLY wire between the under-dash fuse/relay box and starter cut relay 1.