DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
P0450	00	EVAP SYS PRES SEN (EVAP System Pressure Sensor/Switch "A" Circuit)	Diagnosis condition	-
			Signal (terminal)	EVAP control system pressure sensor signal
			Threshold	An excessively low or high voltage from the sensor is sent to ECM
			Diagnosis delay time	-

POSSIBLE CAUSE

Harness or connectors (EVAP control system pressure sensor circuit is shorted.)
EVAP control system pressure sensor

FAIL-SAFE

Not applicable

DTC Confirmation Procedure

PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION: Always perform test at a temperature of 5°C (41°F) or more.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

Start engine and warm it up to normal operating temperature.
Turn ignition switch OFF and wait at least 10 seconds.
Turn ignition switch ON.
Select "DATA MONITOR" mode of "ENGINE" using CONSULT.
Make sure that "FUEL T/TMP SE" indication is more than 0°C (32°F).
Start engine and wait at least 20 seconds.
Check 1st trip DTC.

With GST

Start engine and warm it up to normal operating temperature.

Set voltmeter probes to ECM harness connector terminals as per the following.

ECM			Voltage
Connector	+	-
Connector	Terminal
E32	180	204	Less than 4.2 V

Make sure that the voltage is less than 4.2 V.
Turn ignition switch OFF and wait at least 10 seconds.
Start engine and wait at least 20 seconds.
Check 1st trip DTC.

Is 1st trip DTC detected?

YES>>

Proceed to DTC Diagnosis Procedure .

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident .

NO-2>>

Confirmation after repair: INSPECTION END