DTC P0616

DTC P0616  : Starter Cut Relay Diagnosis Circuit Low Voltage

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

DTC (PGM-FI)

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   -2. Clear the DTC with the HDS.

   -3. Check the parameter (s) below with the HDS.

   Signal	Threshold		Current conditions
   	Values	Unit	Values	Unit
   STARTER CUT RELAY	Less than 2.2	V

   Do the current condition (s) match the threshold?

   YES 

   The failure is duplicated. Go to step 2.

   NO 

   Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at starter cut relay 1, starter cut relay 2, 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 .

2. Fuse check

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

   -2. Check the following fuse.

   Fuse	No. B25 (7.5 A)
   Location	Under-hood fuse/relay box

   Is the fuse OK?

   YES 

   Go to step 3.

   NO 

   Go to step 5.

3. Determine possible failure area (START DIAG line, others)

   -1. Remove the No. B25 (7.5 A) fuse from the under-hood fuse/relay box.

   -2. Turn the vehicle to the ON mode.

   -3. Check the parameter (s) below with the HDS.

   Signal	Threshold		Current conditions
   	Values	Unit	Values	Unit
   STARTER CUT RELAY	More than 2.2	V

   Do the current condition (s) match the threshold?

   YES 

   Go to step 4.

   NO 

   Go to step 5.

4. Relay check

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

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

   -2. Test starter cut relay 2.

   Is starter cut relay 2 OK ?

   YES 

   Repair a short in the ST RLY 1 TO 2 wire between the No. B25 (7.5 A) fuse in the under-hood fuse/relay box, starter cut relay 1, and starter cut relay 2. If needed, replace the under-hood fuse/relay box .

   NO 

   Replace starter cut relay 2.

5. Shorted wire check (START DIAG 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. Measure the resistance between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	PCM connector A (51P): disconnected
   Test point 1	PCM connector A (51P) No. 24
   Test point 2	Body ground

   Is there 1.0 MΩ or more?

   YES 

   The START DIAG wire is OK. Update the PCM if it does not have the latest software, or substitute a known-good PCM , then recheck. If DTC P0616 goes away and the PCM was updated, troubleshooting is complete. If DTC P0616 goes away and the PCM was substituted, replace the original PCM .

   NO 

   Repair a short in the START DIAG wire between starter cut relay 1, starter cut relay 2 in the under-hood fuse/relay box and the PCM (A24).