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5 CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Check harness continuity between EVAP control system pressure sensor terminal 3 and engine ground.
Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to power.
OK or NG
OK © GO TO 7.
NG © GO TO 6.
6 DETECT MALFUNCTIONING PART
Check the following.
I Harness connectors B2, M2
I Harness connectors M81, F49
I Harness for open between EVAP control system pressure sensor and ECM
I Harness for open between EVAP control system pressure sensor and TCM (Transmission Control Module)
© Repair open circuit or short to power in harness or connectors.
7 CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND
SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 60 and EVAP control system pressure sensor terminal 2.
Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK © GO TO 9.
NG © GO TO 8.
8 DETECT MALFUNCTIONING PART
Check the following.
I Harness connectors B2, M2
I Harness connectors M81, F49
I Harness for open or short between ECM and EVAP control system pressure sensor
© Repair open circuit or short to ground or short to power in harness or connectors.
DTC P0452 EVAP SYSTEM PRESSURE SENSOR
Diagnostic Procedure (Cont’d)
EC-394
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