DTC P2135

DTC P2135  : TP Sensor A/B Incorrect Voltage Correlation

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

Do not insert your fingers into the installed throttle body when you turn the vehicle to the ON mode, or while the vehicle is in ON mode. If you do, you will seriously injure your fingers if the throttle valve is activated.

DTC (PGM-FI)

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   -2. Clear the DTC with the HDS.

   -3. Select the ETCS TEST in the INSPECTION MENU with the HDS.

   ETCS TEST

   Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC	Freeze Frame
   P2135 TP Sensor A/B Incorrect Voltage Correlation

   Is DTC P2135 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 throttle body and the PCM.

2. Throttle body operation check

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

   -2. Disconnect the intake air duct from the throttle body.

   -3. Turn the vehicle to the ON mode.

   -4. Clear the DTC with the HDS.

   -5. Visually check the throttle valve operation.

   Does the valve temporarily move to its fully closed position?

   YES 

   Replace the throttle body , then do the repair verification.

   NO 

   Go to step 3.

3. 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 B (51P)

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

   Test condition	Vehicle OFF (LOCK) mode
   	PCM connector B (51P): disconnected
   Test circuit	THL1, THL2
   Test point 1	PCM connector B (51P) No. 31 (RED)
   Test point 2	PCM connector B (51P) No. 40 (TAN)

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

   Is there continuity?

   YES 

   Go to step 4.

   NO 

   Update the PCM if it does not have the latest software, or substitute a known-good PCM , then do the repair verification.

4. Shorted wire check (THL1 line to THL2 line)

   -1. Disconnect the following connector.

   Throttle body 6P connector

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

   Test condition	Vehicle OFF (LOCK) mode
   	PCM connector B (51P): disconnected
   	Throttle body 6P connector: disconnected
   Test circuit	THL1, THL2
   Test point 1	PCM connector B (51P) No. 31 (RED)
   Test point 2	PCM connector B (51P) No. 40 (TAN)

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

   Is there continuity?

   YES 

   Repair a short in the THL1 wire to the THL2 wire between PCM connector terminals B31 (THL1 line) and B40 (THL2 line), then do the repair verification.

   NO 

   The THL1 and THL2 wires are OK. Replace the throttle body , then do the repair verification.

5. Repair verification

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

   -2. Reconnect all connectors.

   -3. Exit the SCS mode with the HDS.

   -4. Turn the vehicle to the ON mode.

   -5. Reset the PCM with the HDS .

   Reset PCM

   -6. Do the PCM idle learn procedure .

   -7. Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC	Freeze Frame
   P2135 TP Sensor A/B Incorrect Voltage Correlation

   DTC (PGM-FI)

   Is DTC P2135 indicated?

   YES 

   Check for poor connections or loose terminals at the throttle body and the PCM. If the PCM was updated, substitute a known-good PCM , then recheck. If the PCM was substituted, go to step 1.

   NO 

   Troubleshooting is complete. If the PCM was substituted, replace the original PCM . If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.