P0453

DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR







Component Description
The EVAP control system pressure sensor (1) detects pressure in the purge line. The sensor output voltage to the ECM increases as pressure increases.
- This illustration is a view from under vehicle
- EVAP canister (2)
- EVAP canister vent control valve (3)

CONSULT-III Reference Value in Data Monitor Mode






On Board Diagnosis Logic






DTC Confirmation Procedure

NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

TESTING CONDITION:
Always perform test at a temperature of 5 °C (41 °F) or more.

WITH CONSULT-III
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Select "DATA MONITOR" mode with CONSULT-III.
5. Make sure that "FUEL T/TMP SE" is more than 0 °C (32 °F).
6. Wait at least 10 seconds.
7. Check 1st trip DTC.
If 1st trip DTC is detected, go to "Diagnostic Procedure" below.

WITH GST




1. Start engine and warm it up to normal operating temperature.
2. Check that voltage between ECM terminal 43 (Fuel tank temperature sensor signal) and ground is less than 4.2 V.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Wait at least 10 seconds.
5. Select Service $07 with GST.
If 1st trip DTC is detected, go to "Diagnostic Procedure" below.

Wiring Diagram

EC-PRE/SE-01:

Diagnostic Procedure

Step 1-3:

Step 3 (Continued)-9:

Step 9 (Continued)-15:

Step 15 (Continued)-22:

Component Inspection

EVAP CONTROL PRESSURE SENSOR
1. Remove EVAP control system pressure sensor with its harness connector connected from EVAP canister.
Always replace O-ring with a new one.

2. Install a vacuum pump to EVAP control system pressure sensor.




3. Turn ignition switch ON and check output voltage between ECM terminal 42 and ground under the following conditions.

CAUTION:
- Always calibrate the vacuum pump gauge when using it.
- Do not apply below -93.3 kPa (-700 mmHg, -27.56 inHg) or pressure over 101.3 kPa (760 mmHg, 29.92 inHg).

4. If NG, replace EVAP control system pressure sensor.