DTC 11

DTC 11: Throttle Position Sensor System (Short Circuit)

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 0.7 volts at closed throttle to about 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 output.

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

DIAGNOSIS

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

CAUTION: To prevent damage to the scan tool MB991502, always turn the ignition switch to the "LOCK"(OFF) position before connecting or disconnecting the scan tool MB991502.

STEP 1. Using scan tool MB991502, check data list item 11: Throttle Position Sensor.

CAUTION: To prevent damage to the scan tool MB991502, always turn the ignition switch to the "LOCK"(OFF) position before connecting or disconnecting the scan tool MB991502.

1) Connect scan tool MB991502 to the data link connector.
2) Turn the ignition switch to the "ON" position.
3) Set scan tool MB991502 to the data reading mode for item
11: Throttle Position Sensor.
- With the throttle valve in the idle position, voltage should be between 535 and 735 mV.
- With the throttle valve in the full-open position, voltage should be between 4,500 and 5,500 mV.

4) Turn the ignition switch to the "LOCK"(OFF) position.
Q: Is the sensor operating properly?
YES: This malfunction is intermittent.
NO: Go to Step 2.
STEP 2. Check the sensor output voltage at throttle position sensor connector B-07 by backprobing.

1) Do not disconnect connector B-07.
2) Turn the ignition switch to the "ON" position.

3) Measure the voltage between terminal 3 and ground by backprobing.
- With the throttle valve in the idle position, voltage should be between 0.535 and 0.735 volts.
- With the throttle valve in the full-open position, voltage should be between 4.5 and 5.5 volts.

4) Turn the ignition switch to the "LOCK"(OFF) position.
Q: Is the voltage normal?
YES: Go to Step 3.
NO: Go to Step 7.

STEP 3. Check the sensor output voltage at PCM connector C-117 <2.4L Engine>> or C-119 <3.0L Engine>> by backprobing.

1) Do not disconnect connector C-117 <2.4L Engine> or C-119 <3.0L Engine>.
2) Turn the ignition switch to the "ON" position.

3) Measure the voltage between terminal 78 and ground by backprobing.
- With the throttle valve in the idle position, voltage should be between 0.535 and 0.735 volts.
- With the throttle valve in the full-open position, voltage should be between 4.5 and 5.5 volts.

4) Turn the ignition switch to the "LOCK"(OFF) position.
Q: Is the voltage normal?
YES: Go to Step 4.
NO: Go to Step 6.

STEP 4. Check connectors B-07 at the throttle position sensor and C-117 <2.4L Engine>> or C-119 <3.0L Engine>> at the PCM for damage.
Q: Are the connectors in good condition?
YES: Go to Step 5.
NO: Repair or replace it.

STEP 5. Using scan tool MB991502, check data list item 11: Throttle Position Sensor.

CAUTION: To prevent damage to the scan tool MB991502, always turn the ignition switch to the "LOCK"(OFF) position before connecting or disconnecting the scan tool MB991502.

STEP 6. Check connectors B-07 at the throttle position sensor and C-117 <2.4L Engine>> or C-119 <3.0L Engine> at the PCM for damage.
Q: Are the connectors in good condition?
YES: Repair it because of harness damage between throttle position sensor connector B-07 terminal 3 and PCM connector C-117 <2.4L Engine> or C-119 <3.0L Engine> terminal 78.
NO: Repair or replace it.

STEP 7. Check connector B-07 at the throttle position sensor for damage.
Q: Is the connector in good condition?
YES: Go to Step 8.
NO: Repair or replace it.
STEP 8. Check the continuity at the throttle position sensor connector B-07.

1) Disconnect connector B-07 and measure at the harness side.

2) Check for the continuity between terminal 1 and ground.
- Should be less than 2 ohm.
Q: Is the continuity normal?
YES: Go to Step 11.
NO: Go to Step 9.

STEP 9. Check connector C-114 <2.4L Engine> or C-115 <3.0L Engine> at the PCM for damage.
Q: Is the connector in good condition?
YES: Go to Step 10.
NO: Repair or replace it.

STEP 10. Check harness for open circuit or damage between throttle position sensor connector B-07 terminal 1 and PCM connector C-114 <2.4L Engine> or C-115 <3.0L Engine> terminal 57.
Q: Is the harness wire in good condition?
YES: Go to Step 5.
NO: Repair it.
STEP 11. Check the power supply voltage at PCM connector C-114 <2.4L Engine> or C-115 <3.0L Engine> by backprobing.

1) Do not disconnect connector C-114 <2.4L Engine> or C-115 .
2) Turn the ignition switch to the ON position.

3) Measure the voltage between terminal 46 and ground by backprobing.
- Voltage should be between 4.8 and 5.2 volts.

4) Turn the ignition switch to the LOCK (OFF) position.
Q: Is the voltage normal?
YES: Go to Step 14.
NO: Go to Step 12.

STEP 12. Check connector C-114 <2.4L Engine> or C-115 <3.0L Engine> at the PCM for damage.
Q: Is the connector in good condition?
YES: Go to Step 13.
NO: Repair or replace it.

STEP 13. Check harness for damage between throttle position sensor connector B-07 terminal 4 and PCM connector C-114 <2.4L Engine> or C-115 <3.0L Engine> terminal 46.
Q: Is the harness wire in good condition?
YES: Go to Step 5.
NO: Repair it.
STEP 14. Check the throttle position sensor.

1) Disconnect connector B-07 and measure at the sensor side.

2) Measure the resistance between connector terminal 1 and 4.
Standard value: 3.5 - 6.5 K ohms

3) Measure resistance between the throttle position sensor side connector terminal 1 and 3.
4) Move the throttle valve from the idle position to the full-open position.
- Resistance should change smoothly in proportion to the opening angle of the throttle valve.

Q: Is the resistance normal?
YES: Go to Step 15.
NO: Replace the throttle position sensor.

STEP 15. Check connectors C-114 <2.4L Engine> or C-115 <3.0L Engine> and C-117 <2.4L Engine> or C-119 <3.0L Engine, at PCM for damage.
Q: Are the connectors in good condition?
YES: Go to Step 16.
NO: Repair or replace it.

STEP 16. Check harness for damage between throttle position sensor connector B-07 terminal 3 and PCM connector C-117 <2.4L Engine> or C-119 <3.0L Engine> terminal 78.
Q: Is the harness wire in good condition?
YES: Go to Step 17.
NO: Repair it.

STEP 17. Check harness for damage between throttle position sensor connector B-07 terminal 1 and PCM connector C-117 <2.4L Engine> or C-119 <3.0L Engine> terminal 57.
Q: Is the harness wire in good condition?
YES: Throttle position sensor adjustment.
NO: Repair it.