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Home >> Mitsubishi >> 2000 >> Eclipse GT V6-3.0L SOHC >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> Manufacturer Code Charts >> Transmission Control System >> DTC 14

DTC 14






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 volt 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 displayed. If TPS output voltage is 0.2 volt 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 volt 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 harness, connector
- Malfunction of the PCM


DIAGNOSIS





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

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

STEP 1. Using Scan Tool MB991502, Check Data List Item 11: Throttle Position Sensor.
1. Connect scan tool MB991502 to the data link connector.
2. Turn the ignition switch to "ON" position.
3. Set scan tool MB991502 to the data reading mode for item 11, Throttle position sensor.
4. When the accelerator pedal is not depressed (throttle valve is fully closed) the display should be "535 to 735 mV."
5. Gradually depressing the accelerator pedal increases the value shown on the display.
6. With the accelerator pedal fully depressed (throttle valve is fully open) the display should be "4,500 to 5,500 mV."
If the throttle position sensor is operating properly, this malfunction is intermittent. Refer to How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction.
If the throttle position sensor is not operating properly, go to Step 2.

STEP 2. Check The Throttle Position Sensor.





1. Disconnect harness connector B-07 and measure at the sensor side.
2. Measure the resistance between terminals 1 and 4.
Standard value: 3.5 - 6.5 k Ohms





3. Measure the resistance between terminals 1 and 3.





Normal condition:

Throttle valve slowly open until fully open from the idle position
Changes smoothly in proportion to the opening angle of the throttle valve
If the resistance meets the condition above, go to Step 3.
If the resistance does not meet the condition above, replace the Throttle position sensor. Refer to <2.4L Engine>, Throttle Body or <3.0L Engine>, Throttle Body. Recheck for DTCs.

STEP 3. Check The Circuit At The Throttle Position Sensor.





1. Disconnect harness connector B-07 and measure at the sensor side.
2. Turn the ignition switch to "ON" position.
3. Measure the voltage between terminal 4 and ground.
- Voltage should be 4.8 - 5.2 volts.





4. Turn the ignition switch to "LOCK" (OFF) position.
5. Check for the continuity between terminal 1 and ground.
- Should be less than 2 Ohm.
If the checks above meet the specifications, go to Step 4.
If the checks above do not meet the specifications, go to Step 5.

STEP 4. Check Harness Connector B-07 At The Throttle Position Sensor For Damage.





If harness connector B-07 is damaged, repair or replace it. Refer to Harness Connector Inspection. Recheck for diagnostic trouble code.
If harness connector B-07 is in good condition, go to Step 5.

STEP 5. Check Harness Connectors C-54 <2.4L Engine> Or C-55 <3.0L Engine> And C-57 <2.4L Engine> Or C-59 <3.0L Engine> At The PCM For Damage.





If harness connectors C-54 <2.4L Engine> or C-55 <3.0L Engine> and C-57 <2.4L Engine> or C-59 <3.0L Engine> are damaged, repair or replace. Refer to Harness Connector Inspection. Recheck for DTCs.
If harness connectors C-54 <2.4L Engine> or C-55 <3.0L Engine> and C-57 <2.4L Engine> or C-59 <3.0L Engine> are in good condition, go to Step 6.

STEP 6. Check The Harness Wire Between The PCM Connectors C-54 <2.4L Engine> Or C-55 <3.0L Engine> And C-57 <2.4L Engine> Or C-59 <3.0L Engine> And The Throttle Position Sensor Connector B-07.





If any harness wire between the PCM connectors C-54 <2.4L Engine> or C-55 <3.0L Engine> and C-57 <2.4L Engine> or C-59 <3.0L Engine> and the throttle position sensor connector B-07 is damaged, repair it. Refer to Harness Connector Inspection. Recheck for DTCs.
If the harness wire is in good condition, recheck for DTCs.





If the malfunction is not eliminated, replace the PCM. The immobilizer-ECU and the ignition key should be replaced together with it. Refer to Ignition Switch and Immobilizer System - Ignition Switch and Immobilizer System.

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