P0453

DTC P0453: Evaporative Emission Control System Pressure Sensor High Input

Wiring Diagram










DTC Detecting Condition and Trouble Area






DTC Confirmation Procedure

WARNING:

- When performing a road test, select a place where there is no traffic or possibility of a traffic accident and be very careful during testing to avoid occurrence of an accident.
- Road test should be carried out with 2 persons, a driver and tester, on a level road.

1) With ignition switch OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Start engine and drive vehicle for 10 seconds.
4) Stop vehicle and check DTC and pending DTC.

DTC Troubleshooting

WARNING:

In order to reduce risk of fire and personal injury, this work must be performed in a well ventilated area and away from any open flames such as gas hot water.

1.
Was "Engine System Check" performed?
YES
Go to Step 2.
NO
Go to Engine System Check Engine System Check.

2. Check ECM voltage.

Disconnect connectors from ECM with ignition switch turned OFF.
Remove ECM from vehicle body and connect connectors to ECM.
Check proper connection of connector at "C46-16" terminals.
If OK, then turn ON ignition switch, check voltage between "C46-18" terminal wire and vehicle body ground.

Is voltage about 4 - 6 V at each terminal?
YES
Go to Step 3.
NO
"GRY/RED" wire shorted to other circuits.

3. Check wire circuit.

Disconnect connector from ECM with ignition switch turned OFF.
Turn ON ignition switch.
Measure voltage between "G04-32" terminal in ECM harness connector and vehicle body ground.

Is voltage 0 V?
YES
Go to Step 4.
NO
"RED/YEL" wire shorted to other circuits.
If wire are OK, substitute a known-good ECM and recheck.

4. Check fuel tank pressure and temp. sensor.

Check fuel tank pressure and temp. sensor according to Fuel Tank Pressure and Temp. Sensor Inspection Fuel Tank Pressure and Temp. Sensor Inspection.

Is it good condition?
YES
Substitute a known-good ECM and recheck.
NO
Replace ECT sensor.