DTC 11

CIRCUIT OPERATION
- When the throttle valve shaft rotates from the idle position to the fully opened position, the resistance between the TPS output terminal (terminal 3) and ground terminal (terminal 1) will increase according to the rotation.
- Voltage at pin 78 increases from around 5 volts at closed throttle to about 4.5 volts at wide open throttle.

DTC SET CONDITIONS
- If the PCM output voltage is 4.8 volts or higher when the engine is idling, the output is judged to be too high and diagnostic trouble code number "11" is displayed. If TPS output voltage is 0.2 volts or lower at times other than when the engine is idling, the output is judged to be too low and diagnostic trouble code number "12" is output. If TPS output voltage is 0.2 volts or lower or if it is 1.2 volts or higher when the engine is idling, the TPS adjustment is judged to be incorrect and diagnostic trouble code number "14" is output.

TROUBLESHOOTING HINTS
The most likely causes for this code to be set:
- Malfunction of the throttle position sensor circuit
- Damaged connector
- Malfunction of the PCM

DIAGNOSIS





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

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

STEP 1. Using scan tool MB991502, check data list item 11: Throttle position sensor.

1. When the accelerator pedal is not depressed (throttle valve is fully closed) the display should be "300 to 1,000 mV."
2. Gradually depressing the accelerator pedal increases the value shown on the display.
3. With the accelerator pedal fully depressed (throttle valve is fully open) the display should be "4,500 to 5,000 mV."
If the throttle position sensor is operating properly, it can be assumed that this malfunction is intermittent. Refer to How to Use Troubleshooting/inspection Service Points.
If the throttle position sensor is not operating properly, go to Step 2.

STEP 2. Check harness connector A-41 at the throttle position sensor for damage.





If harness connector A-41 is damaged, repair or replace it. Refer to Harness Connector Inspection. Recheck for diagnostic trouble code.
If harness connector A-41 is in good condition, check for 5 volts at terminal 4 with the ignition switch "ON." If OK, go to Step 3. If voltage at terminal 4 is not approximately 5 volts, go to Step 4.

STEP 3. Check harness connectors C-90 and C-91 at the PCM for damage.





If harness connectors C-90 and C-91 are damaged, repair or replace it. Refer to Harness Connector Inspection. Recheck for DTCs.
If harness connectors C-90 and C-91 are in good condition, go to Step 4.

STEP 4. Check the harness wire between the PCM connectors C-90 and C-91 and the throttle position sensor connector A-41.





NOTE: After inspecting joint connector C-71, inspect the wire. If joint connector C-71 is damaged, repair or replace it. Refer to Harness Connector Inspection.

If any harness wire between the PCM connectors C-90 and C-91 and the throttle position sensor connector A-41 is damaged, repair it. Refer to Harness Connector Inspection. Recheck for DTCs.
If the harness wire is in good condition, check the throttle position sensor. Refer to Diagnosis - DTC; P0120 Throttle Position Circuit Malfunction. Recheck for DTCs.
If the malfunction is not eliminated, replace the PCM.