DTC P100C

DTC P100C  : Electric VTC Motor Speed Signal Circuit Malfunction

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

   -4. Turn the vehicle to the ON mode.

   -5. Select the VTC TEST in the Function Test Menu with the HDS.

   VTC TEST

   Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC
   P100C Electric VTC Motor Speed Signal Circuit Malfunction

   Is DTC P100C 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 the electric VTC motor and the PCM. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot .

2. Shorted wire check (EVTS line)

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

   -2. Jump the SCS line with the HDS, and wait more than 1 minute.

   -3. Disconnect the following connectors.

   Electric VTC motor connector B (5P)

   PCM connector E (80P)

   -4. Measure the resistance between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Electric VTC motor connector B (5P): disconnected
   	PCM connector E (80P): disconnected
   Test point 1	Electric VTC motor connector B (5P) (female terminals) No. 3:
   Test point 2	Body ground

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

   Is there 1 MΩ or more?

   YES 

   The EVTS wire is not shorted. Go to step 3.

   NO 

   Repair a short in the EVTS wire between the PCM (E30) and the electric VTC motor.

3. Open wire check (EVTS line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Electric VTC motor connector B (5P): disconnected
   	PCM connector E (80P): disconnected

   Test point 1	Electric VTC motor connector B (5P) (female terminals) No. 3:
   Test point 2	PCM connector E (80P) No. 30

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

   Is there 1.0 Ω or less?

   YES 

   The EVTS wire is OK. Go to step 4.

   NO 

   Repair an open in the EVTS wire between the PCM (E30) and the electric VTC motor.

4. Shorted wire check (EVTD line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Electric VTC motor connector B (5P): disconnected
   	PCM connector E (80P): disconnected
   Test point 1	Electric VTC motor connector B (5P) (female terminals) No. 2:
   Test point 2	Body ground

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

   Is there 1 MΩ or more?

   YES 

   The EVTD wire is not shorted. Go to step 5.

   NO 

   Repair a short in the EVTD wire between the PCM (E46) and the electric VTC motor.

5. Open wire check (EVTD line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Electric VTC motor connector B (5P): disconnected
   	PCM connector E (80P): disconnected
   Test point 1	Electric VTC motor connector B (5P) (female terminals) No. 2:
   Test point 2	PCM connector E (80P) No. 46

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

   Is there 1.0 Ω or less?

   YES 

   The EVTD wire is OK. Go to step 6.

   NO 

   Repair an open in the EVTD wire between the PCM (E46) and the electric VTC motor.

6. PCM internal circuit check

   -1. Reconnect PCM connector E (80P).

   -2. Turn the vehicle to the ON mode.

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

   Test condition	Vehicle ON mode
   	Electric VTC motor connector B (5P): disconnected
   Test point 1	Electric VTC motor connector B (5P) (female terminals) No. 2 and No. 3:
   Test point 2	Body ground

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

   Is there any voltage?

   YES 

   The PCM internal circuit is OK. Replace the electric VTC motor .

   NO 

   Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM .