EGR Temperature Sensor: Testing and Inspection

1. DRAIN ENGINE COOLANT.





2. REMOVE V-BANK COVER.
3. REMOVE EGR VALVE.





4. REMOVE EGR VALVE ADAPTOR.
- Disconnect the EGR gas temperature sensor connector.
- Disconnect the PCV hose from the EGR valve adaptor.
- Remove the 2 bolts, 2 nuts, V-bank cover bracket, EGR valve adaptor and gasket.





5. REMOVE EGR GAS TEMPERATURE SENSOR FROM EGR VALVE ADAPTOR.
- Mount the EGR valve adaptor in a vise.
- Remove the EGR gas temperature sensor from the adaptor.
- Remove the connector bracket from the sensor connector.





6. INSPECT EGR GAS TEMPERATURE SENSOR.
- Using an ohmmeter, measure the resistance between the terminals.

Resistance:
At 50°C (112°F) 64 - 97 kohms
At 100°C (212°F) 11 - 16k0hms
At 150°C (302°F) 2 - 4 Kohms

- If the resistance is not as specified, replace the sensor.
7. REINSTALL EGR GAS TEMPERATURE SENSOR TO EGR VALVE ADAPTOR.
- Mount the EGR valve adaptor in a vise.
- Install the EGR gas temperature sensor to the adaptor.

Torque: 20 N.m (200 kgf.cm, 14 ft.lb.)

- Install the connector bracket to the sensor connector.
8. REINSTALL EGR VALVE ADAPTOR.
- Install a new gasket, the EGR valve adaptor, connector bracket and V-bank cover bracket with the 2 bolts and 2 nuts.

Torque: 19 N.m (195 kgf.cm, 14 ft.lb.)

NOTICE: Do not touch the air intake chamber and adaptor surfaces of the gasket with your hand.

- Connect the PCV hose to the EGR valve adaptor.
- Connect the EGR gas temperature sensor connector.