DTC Description
DTC DETECTION LOGIC
| DTC | CONSULT screen terms(Trouble diagnosis content) | DTC detection condition | ||
| P0453 | 00 | EVAP SYS PRES SEN(EVAP System Pressure Sensor/Switch A Circuit High) | Diagnosis condition | - |
| Signal (terminal) | EVAP control system pressure sensor signal | |||
| Threshold | An excessively 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
- EVAP canister vent control valve
- EVAP canister
- Rubber hose from EVAP canister vent control valve to vehicle frame
FAIL-SAFE
Not applicable
DTC CONFIRMATION PROCEDURE
- PRECONDITIONING
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.
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GO TO 2.
- PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
- Start the 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 the engine and wait at least 20 seconds.
- Check 1st trip DTC.
With GST
- Start the engine and warm it up to normal operating temperature.
- Set voltmeter probes to ECM harness connector terminals as per the following.
ECM Voltage Connector + - Terminal E16 131 158 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?
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Proceed to Diagnosis Procedure .
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To check malfunction symptom before repair: Refer to Intermittent Incident .
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Confirmation after repair: INSPECTION END