DTC 29

CIRCUIT OPERATION
- 4.8 - 5.2 volt voltage is applied to the vehicle speed sensor output terminal (terminal 3) from the PCM (terminal 80). The vehicle speed sensor generates a pulse signal when the output terminal is opened and ground.
- The PCM compares the vehicle speed sensor signal to input shaft and output shaft speed sensor signals.
- If the vehicle speed sensor becomes inoperative, the transaxle will not shift normally.

DTC SET CONDITIONS
- If the PCM detects no pulse signal from the vehicle speed sensor for continuous period of 30 seconds under following conditions, it is judged as a vehicle sensor system malfunction and DTC number "29" is displayed.
- Driving forward
- Output shaft speed is 900 r/min or more

TROUBLESHOOTING HINTS
The most likely causes for this case:
- Malfunction of the vehicle speed sensor circuit
- Damaged harness, connector
- Malfunction of the PCM

DIAGNOSIS
STEP 1. Check The Vehicle Speed Sensor.
Does the speed meter work?
If the speed meter is operating properly, go to Step 2.
If the speed meter is not operating properly, refer to Chassis Electrical - Combination Meter - Combination Meters Diagnosis.

STEP 2. Check The Combination Meter Circuit.





1. Disconnect harness connector C-57 <2.4L Engine> or C-59 <3.0L Engine> and measure at the harness side.
2. Turn the ignition switch to "ON" position.
3. Measure the voltage between terminal 80 and ground.
- Voltage should be 8 - 12 volts.
If not 8 - 12 volts, repair the connectors or the harness wires between the PCM and the combination meter.
If 8 - 12 volts, go to Step 3.

STEP 3. Check The Harness Connector C-57 <2.4L Engine> Or C-59 <3.0L Engine> At The PCM For Damage.





If harness connector C-57 <2.4L Engine> or C-59 <3.0L Engine> is damaged, repair or replace it. Refer to Harness Connector Inspection. Recheck for DTC's.
If harness connector C-57 <2.4L Engine> or C-59 <3.0L Engine> is in good condition, 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.