Page 453 of 720
DTC P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-453
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2. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR FOR WATER
1. Disconnect EVAP control system pressure sensor harness connector.
2. Check sensor harness connector for water.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness connector.
3. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT-I
1. Turn ignition switch ON.
2. Check voltage between EVAP control system pressure sensor
terminal 3 and ground with CONSULT-III or tester.
OK or NG
OK >> GO TO 10.
NG >> GO TO 4.
4. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between EVAP control system pressure sensor terminal 3 and ECM terminal
107. Refer to Wiring Diagram.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5. DETECT MALFUNCTIONING PART
Check the following.
1. Harness connectors T2, B44
2. Harness connectors B1, M12
3. Harness for open between ECM and EVAP control system pressure sensor.
>> Repair open circuit. Water should not exist.
PBIB1086E
Voltage: Approximately 5V
PBIB0138E
Continuity should exist.
Page 454 of 720
EC-454
DTC P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR
Revision: 2006 November2007 350Z
6. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT-III
Check harness for short to power and short to ground, between the following terminals.
OK or NG
OK >> GO TO 7.
NG >> Repair short to ground or short to power in harness or connectors.
7. CHECK COMPONENTS
Check the following.
Crankshaft position sensor (POS) (Refer to EC-393, "Component Inspection" .)
Camshaft position sensor (PHASE) (bank 2) (Refer to EC-405, "Component Inspection" .)
Exhaust valve timing control position sensor (bank 2) (Refer to EC-539, "Component Inspection" .)
Refrigerant pressure sensor (Refer to AT C - 8 0 , "COMPONENT INSPECTION" .)
OK or NG
OK >> GO TO 8.
NG >> Replace malfunctioning component.
8. CHECK APP SENSOR
Refer to EC-648, "
Component Inspection" .
OK or NG
OK >> GO TO 11.
NG >> GO TO 9.
9. REPLACE ACCELERATOR PEDAL ASSEMBLY
1. Replace accelerator pedal assembly.
2. Perform EC-77, "
Accelerator Pedal Released Position Learning" .
3. Perform EC-77, "
Throttle Valve Closed Position Learning" .
4. Perform EC-77, "
Idle Air Volume Learning" .
>>INSPECTION END
10. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Refer to EC-455, "
Component Inspection" .
OK or NG
OK >> GO TO 11.
NG >> Replace EVAP control system pressure sensor.
11 . CHECK INTERMITTENT INCIDENT
Refer to EC-141, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
Refer to EC-458, "
Wiring Diagram" .
>>INSPECTION END
ECM terminal Sensor terminal Reference Wiring Diagram
46 CKP sensor (POS) terminal 1EC-388
64CMP sensor (PHASE) (bank 2) terminal 1EC-399EVT control position sensor (bank 2) terminal 1EC-532
103 APP sensor terminal 4EC-643
107 EVAP control system pressure sensor terminal 3EC-458
111 Refrigerant pressure sensor 1EC-711
Page 458 of 720
EC-458
DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
Revision: 2006 November2007 350Z
Wiring DiagramNBS0009L
TBWT1650E
Page 461 of 720
DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
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Revision: 2006 November2007 350Z
2. CHECK CONNECTOR
1. Disconnect EVAP control system pressure sensor harness connector.
2. Check sensor harness connector for water.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness connector.
3. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT-I
1. Turn ignition switch ON.
2. Check voltage between EVAP control system pressure sensor
terminal 3 and ground with CONSULT-III or tester.
OK or NG
OK >> GO TO 10.
NG >> GO TO 4.
4. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between EVAP control system pressure sensor terminal 3 and ECM terminal
107. Refer to Wiring Diagram.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5. DETECT MALFUNCTIONING PART
Check the following.
1. Harness connectors T2, B44
2. Harness connectors B1, M12
3. Harness for open between ECM and EVAP control system pressure sensor.
>> Repair open circuit. Water should not exist.
PBIB1086E
Voltage: Approximately 5V
PBIB0138E
Continuity should exist.
Page 462 of 720
EC-462
DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
Revision: 2006 November2007 350Z
6. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT-III
Check harness for short to power and short to ground, between the following terminals.
OK or NG
OK >> GO TO 7.
NG >> Repair short to ground or short to power in harness or connectors.
7. CHECK COMPONENTS
Check the following.
Crankshaft position sensor (POS) (Refer to EC-393, "Component Inspection" .)
Camshaft position sensor (PHASE) (bank 2) (Refer to EC-405, "Component Inspection" .)
Exhaust valve timing control position sensor (bank 2) (Refer to EC-539, "Component Inspection" .)
Refrigerant pressure sensor (Refer to AT C - 8 0 , "COMPONENT INSPECTION" .)
OK or NG
OK >> GO TO 8.
NG >> Replace malfunctioning component.
8. CHECK APP SENSOR
Refer to EC-648, "
Component Inspection" .
OK or NG
OK >> GO TO 15.
NG >> GO TO 9.
9. REPLACE ACCELERATOR PEDAL ASSEMBLY
1. Replace accelerator pedal assembly.
2. Perform EC-77, "
Accelerator Pedal Released Position Learning" .
3. Perform EC-77, "
Throttle Valve Closed Position Learning" .
4. Perform EC-77, "
Idle Air Volume Learning" .
>>INSPECTION END
ECM terminal Sensor terminal Reference Wiring Diagram
46 CKP sensor (POS) terminal 1EC-388
64CMP sensor (PHASE) (bank 2) terminal 1EC-399EVT control position sensor (bank 2) terminal 1EC-532
103 APP sensor terminal 4EC-643
107 EVAP control system pressure sensor terminal 3EC-458
111 Refrigerant pressure sensor 1EC-711
Page 463 of 720
DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
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Revision: 2006 November2007 350Z
10. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND
SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between EVAP control system pressure sensor terminal 1 and ECM terminal
112. Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 12.
NG >> GO TO 11.
11 . DETECT MALFUNCTIONING PART
Check the following.
Harness connectors T2, B44
Harness connectors B1, M12
Harness for open or short between EVAP control system pressure sensor and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
12. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN
AND SHORT
1. Check harness continuity between ECM terminal 102 and EVAP control system pressure sensor terminal
2. Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 14.
NG >> GO TO 13.
13. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors T2, B44
Harness connectors B1, M12
Harness for open or short between EVAP control system pressure sensor and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
14. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Refer to EC-464, "
Component Inspection" .
OK or NG
OK >> GO TO 15.
NG >> Replace EVAP control system pressure sensor.
15. CHECK INTERMITTENT INCIDENT
Refer to EC-141, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END Continuity should exist.
Continuity should exist.
Page 467 of 720
DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
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Wiring DiagramNBS0009S
TBWT1650E
Page 470 of 720
EC-470
DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
Revision: 2006 November2007 350Z
2. CHECK CONNECTOR
1. Disconnect EVAP control system pressure sensor harness connector.
2. Check sensor harness connector for water.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness connector.
3. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT-I
1. Turn ignition switch ON.
2. Check voltage between EVAP control system pressure sensor
terminal 3 and ground with CONSULT-III or tester.
OK or NG
OK >> GO TO 10.
NG >> GO TO 4.
4. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between EVAP control system pressure sensor terminal 3 and ECM terminal
107. Refer to Wiring Diagram.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5. DETECT MALFUNCTIONING PART
Check the following.
1. Harness connectors T2, B44
2. Harness connectors B1, M12
3. Harness for open between ECM and EVAP control system pressure sensor.
>> Repair open circuit. Water should not exist.
PBIB1086E
Voltage: Approximately 5V
PBIB0138E
Continuity should exist.
