DTC Troubleshooting: P16F6
DTC P16F6: Starter Cut Relay 2 Control Circuit High Voltage
NOTE: Before you troubleshoot, review the general troubleshooting information.

DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
P16F6 Starter Cut Relay 2 Control Circuit High Voltage
     

1.
Problem verification:

Problem verification
?1.
Turn the vehicle to the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Start the engine.

?4.
Check for Pending or Confirmed DTCs with the HDS.
DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
P16F6 Starter Cut Relay 2 Control Circuit High Voltage
     


Is DTC P16F6 indicated?

     
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 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.
Relay check:

Relay check
?1.
Turn the vehicle to the OFF (LOCK) mode.

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


?3.
Test starter cut relay 2.

Is the relay OK?

     
YES
     
     
     
Go to step 3.
     
NO
     
     
     
Replace starter cut relay 2.?
3.
Shorted wire check (ST CUT RLY2 CL- line to power):

Shorted wire check (ST CUT RLY2 CL- line to power)
?1.
Jump the SCS line with the HDS.


?2.
Disconnect the following connector.
PCM connector A (51P)

?3.
Turn the vehicle to the ON mode.

?4.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle ON mode
Starter cut relay 2: disconnected
PCM connector A (51P): disconnected
Test point 1
PCM connector A (51P) No. 34
Test point 2
Body ground

Is there 0.1 V or less?

     
YES
     
     
     
The ST CUT RLY2 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 P16F6 goes away and the PCM was updated, troubleshooting is complete. If DTC P16F6 goes away and the PCM was substituted, replace the original PCM.?
     
NG
     
     
     
Repair a short to power in the ST CUT RLY2 CL- wire between the PCM (A34) and starter cut relay 2.?