Electronic Throttle Control System (4-CYL): Diagnosis Honda Crosstour I

Throttle Body Test

Note. If the malfunction indicator lamp (MIL) has been reported on, check for diagnostic trouble codes (DTCs).

Scheme 746

1. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
2. Turn the ignition switch to ON (II).
3. Make sure the HDS communicates with the PCM. If it does not, go to the DLC circuit troubleshooting (see «DLC CIRCUIT TROUBLESHOOTING»(ref-512893-S17266721462012110400000) ).
4. Start the engine. Hold the engine speed at 3, 000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
5. Check the REL TP SENSOR in the DATA LIST with the HDS. The reading should be below 2.46 percent. If it is not, clean the throttle body (see «THROTTLE BODY CLEANING»(ref-512914-S16029622042012110400000) ).

APP Sensor Signal Inspection

Note. This procedure checks the APP sensor in its fully closed position. In any other position, the APP sensor stores DTCs which are covered in other troubleshooting procedures. Check for Pending or Confirmed DTCs with the HDS before doing this procedure. If any DTCs are indicated, troubleshoot them first, then do this procedure. Press the accelerator pedal several times to check its operation. If it does not operate smoothly, check the pedal. If you find a problem, replace the accelerator pedal module (see ACCELERATOR PEDAL MODULE REMOVAL/INSTALLATION ).

Scheme 747

1. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
2. Turn the ignition switch to ON (II).
3. Make sure the HDS communicates with the PCM. If it doesn't, go to the DLC circuit troubleshooting (see «DLC CIRCUIT TROUBLESHOOTING»(ref-512893-S17266721462012110400000) ).
4. Make sure the accelerator pedal is not pressed, then check the APP SENSOR in the DATA LIST with the HDS. If it is 0 %, the APP sensor is OK. If it is not 0 %, update the PCM if it does not have the latest software (see «PCM UPDATE»(ref-512916-S11084252612012110400000) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(ref-512892-S14637491262012110400000) ), then go to step 5.
5. Make sure the accelerator pedal is not pressed, then check the APP SENSOR in the DATA LIST with the HDS. If it is 0 %, the APP sensor is OK. If it is not 0 %, replace the accelerator pedal module (see «ACCELERATOR PEDAL MODULE REMOVAL/INSTALLATION»(ref-512914-S11471344372012110400000) ), then go to step 1 .

Scheme 748

1. Disconnect the APP sensor connector (A).
2. Remove the accelerator pedal module (B). NOTE: The APP sensor is not available separately. Do not disassemble the accelerator pedal module.
3. Install the parts in the reverse order of removal.