P1184

J : DTC P1183, P1184

J1: CHECK THE ENGINE OIL TEMPERATURE SENSOR RESISTANCE
1. Switch the ignition switch to the OFF position.
2. Raise and support the vehicle.
3. Disconnect the engine oil temperature sensor electrical connector PI12.
4. Carry out the Engine Oil Temperature Sensor Component Test.

Is the engine oil temperature sensor ok?

Yes
Go to J2

No
INSTALL a new engine oil temperature sensor. CLEAR DTC. TEST the system for normal operation.

J2: CHECK THE SIGNAL GROUND CIRCUIT FOR OPEN
1. Measure the resistance between the engine oil temperature sensor electrical connector PI12 pin 2, (NG) and ground.

Is the resistance less than 10,000 ohms?

Yes
Go to J3

No
REPAIR the circuit between the engine oil temperature sensor electrical connector PI12 pin 2, (NG) and the spliced joint P1S6. CLEAR DTC. TEST the system for normal operation.

J3: CHECK THE INPUT CIRCUIT FOR OPEN
1. Remove the powertrain control module (PCM).
2. Measure the resistance between the engine oil temperature sensor electrical connector PI12 pin 1, (WG) and the powertrain control module electrical connector PI1 pin 39, (WG).

Is the resistance less than 10,000 ohms?

Yes
Go to J4

No
REPAIR the circuit between the engine oil temperature sensor electrical connector PI12 pin 1, (WG) and the powertrain control module electrical connector PI1 pin 39, (WG). CLEAR DTC. TEST the system for normal operation.

J4: CHECK THE INPUT CIRCUIT FOR SHORT TO GROUND
1. Measure the resistance between the engine oil temperature sensor electrical connector PI12 pin 1, (WG) and ground.

Is the resistance greater than 10,000 ohms?

Yes
Go to J5

No
REPAIR the circuit between the engine oil temperature sensor electrical connector PI12 pin 1, (WG) and the powertrain control module electrical connector PI1 pin 39, (WG). CLEAR DTC. TEST the system for normal operation.

J5: CHECK THE SIGNAL GROUND CIRCUIT FOR SHORT TO GROUND
1. Raise and support the vehicle.
2. Disconnect both heated exhaust gas oxygen (HEGO) sensor electrical connectors PI6, PI7.
3. Disconnect the engine fuel temperature sensor electrical connector IL9.
4. Disconnect the cylinder head temperature sensor electrical connector PI13.
5. Disconnect both camshaft position sensor electrical connectors PI10, PI11.
6. Disconnect the injection pressure sensor electrical connector IL2.
7. Disconnect the throttle position sensor electrical connector PI16.
8. Measure the resistance between the engine oil temperature sensor electrical connector PI12 pin 2, (NG) and ground.

Is the resistance less than 10,000 ohms?

Yes
REPAIR the circuit between the engine oil temperature sensor electrical connector PI12 pin 2, (NG) and the spliced joint PIS6. INSTALL the powertrain control module (PCM). CLEAR DTC. TEST the system for normal operation.

No
INSTALL a new powertrain control module (PCM). CLEAR DTC. TEST the system for normal operation.