Harness Inspection

INSPECTION




Using Scan Tool
- The fuel tank differential pressure sensor output voltage is proportioned to the fuel tank pressure and sent to the engine control module.




HARNESS INSPECTION
STEP 1. Check for continuity of the ground circuit
- Fuel tank differential pressure sensor connector: Disconnected
OK: GO TO STEP 2
NG: Repair the harness (A2 - 92)




STEP 2. Check for open-circuit, or short-circuit to ground between the engine control module and the manifold absolute pressure sensor.
- Fuel tank differential pressure sensor connector: Disconnected
- Engine control module connector: Disconnected
OK: GO TO STEP 3
NG: Repair the harness (A1 - 77)




STEP 3. Measure the sensor impressed voltage to the manifold absolute pressure sensor.
- Fuel tank differential pressure sensor connector: Disconnected
- Engine control module connector: Connected
- Ignition switch: ON
Voltage (V): 4.8 - 5.2 V
OK: STOP
NG: Replace the engine control module.