DTC 17

Throttle Position Sensor Circuit:

Connectors: A-41, C-35, C-41, C-71:

CIRCUIT OPERATION
The throttle position sensor signal is sent to the ECU through this circuit.

The auto-cruise control-ECU receives a signal from the throttle position sensor at terminal 3. The signal is OFF when the accelerator pedal is depressed, and ON when the accelerator pedal is released. The throttle position sensor sends a voltage to terminal 1 of the auto-cruise control-ECU. The voltage depends on throttle opening angle.

DTC SET CONDITIONS
If 2.5 volts or more or 0.2 volts or less is output for four seconds or more.

TROUBLESHOOTING HINTS
- Malfunction of the throttle position sensor.
- Damaged connector or harness.
- Malfunction of the auto-cruise control-ECU.

DIAGNOSIS
Required Special Tool:
MB991502: Scan Tool (MUT-II)




STEP 1. Check the throttle position sensor.

CAUTION: To prevent damage to the scan tool MB991502, make sure the ignition switch is "OFF" before connecting or disconnecting the scan tool MB991502.

1. Using scan tool MB991502.
2. Connect scan tool MB991502 to the data link connector.
3. Turn the ignition switch "ON."
4. Is diagnostic trouble code number P0120 output from the powertrain control module?

If yes, refer to Diagnosis. If no, go to Step 2.







STEP 2. Check harness connectors A-41 at the throttle position sensor and C-35 at the auto-cruise control-ECU.
If harness connectors A-41 and C-35 are damaged, repair or replace them. Refer to vehicle level Testing and Inspection. Then check that a diagnostic trouble code is not output.

If harness connectors A-41 and C-35 are in good condition, go to Step 3.







STEP 3. Check the harness wire between the throttle position sensor connector A-41 and the cruise control-ECU connector C-35.
If any harness wire between the throttle position sensor connector A-41 and the cruise control-ECU connector C-35 is damaged, repair or replace it. Check that the diagnostic trouble code is not output.

If the harness wire is in good condition, replace the auto-cruise control-ECU. Check that a diagnostic trouble code is not output.






NOTE: If intermediate connector C-41, joint connector (4) C-71 are damaged, repair or replace it Refer to vehicle level Testing and Inspection. Then check that a diagnostic trouble code is not output.