Diagnosis Procedure

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connection E9. Refer to Ground Inspection in "CIRCUIT INSPECTION ".
Is the inspection result normal?

YES: GO TO 2.

NO: Repair or replace ground connection.

CHECK CRANKSHAFT POSITION (CKP) SENSOR (POS) POWER SUPPLY CIRCUIT-I

Disconnect crankshaft position (CKP) sensor (POS) harness connector.
Turn ignition switch ON.
Check the voltage between CKP sensor (POS) harness connector and ground.

VOLTAGE SPECIFICATION

CKP sensor (POS)		Ground	Voltage (V)
Connector	Terminal	Ground	Voltage (V)
F30	1	Ground	Approx. 5

Fig 1: Checking Voltage Between CKP Sensor (POS) Harness Connector And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

Is the inspection result normal?

YES: GO TO 8.

NO: GO TO 3.

CHECK CRANKSHAFT POSITION (CKP) SENSOR (POS) POWER SUPPLY CIRCUIT-II

Turn ignition switch ON.
Disconnect ECM harness connector.
Check the continuity between CKP sensor (POS) harness connector and ECM harness connector.

CONTINUITY CHART

CKP sensor (POS)		ECM		Continuity
Connector	Terminal	Connector	Terminal	Continuity
F30	1	F13	76	Existed

Is the inspection result normal?

YES: GO TO 4.

NO: Repair open circuit.

CHECK SENSOR POWER SUPPLY CIRCUIT

Check harness for short to power and short to ground, between the following terminals.

ECM REFERENCE

ECM		Sensor
Connector	Terminal	Name	Connector	Terminal
F13	72	Refrigerant pressure sensor	E219	1
F13	76	CKP sensor (POS)	F30	1
E10	87	APP sensor	E40	6
E10	91	EVAP control system pressure sensor	B41	3

Is the inspection result normal?

YES: GO TO 5.

NO: Repair short to ground or short to power in harness or connectors.

CHECK COMPONENTS
Check the following.
- EVAP control system pressure sensor (Refer to "COMPONENT INSPECTION ").
- Refrigerant pressure sensor (Refer to "DIAGNOSIS PROCEDURE ").
Is the inspection result normal?

YES: GO TO 6.

NO: Replace malfunctioning components.
CHECK APP SENSOR
Refer to "COMPONENT INSPECTION ".

Is the inspection result normal?

YES: GO TO 12.

NO: GO TO 7.
REPLACE ACCELERATOR PEDAL ASSEMBLY
1. Replace accelerator pedal assembly.
2. Refer to "SPECIAL REPAIR REQUIREMENT ".
: INSPECTION END

CHECK CKP SENSOR (POS) GROUND CIRCUIT FOR OPEN AND SHORT

Turn ignition switch OFF.
Disconnect ECM harness connector.

Check the continuity between CKP sensor (POS) harness connector and ECM harness connector.

CONTINUITY CHART

CKP sensor (POS)		ECM		Continuity
Connector	Terminal	Connector	Terminal	Continuity
F30	2	F13	60	Existed

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES: GO TO 9.

NO: Repair open circuit, short to ground or short to power in harness or connectors.

CHECK CKP SENSOR (POS) INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

Check the continuity between CKP sensor (POS) harness connector and ECM harness connector.

CONTINUITY CHART

CKP sensor (POS)		ECM		Continuity
Connector	Terminal	Connector	Terminal	Continuity
F30	3	F13	65	Existed

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES: GO TO 10.

NO: Repair open circuit, short to ground or short to power in harness or connectors.

CHECK CRANKSHAFT POSITION SENSOR (POS)
Refer to "COMPONENT INSPECTION ".

Is the inspection result normal?

YES: GO TO 11.

NO: Replace crankshaft position sensor (POS).
CHECK GEAR TOOTH
Visually check for chipping signal plate gear tooth.

Is the inspection result normal?

YES: GO TO 12.

NO: Replace the signal plate.
CHECK INTERMITTENT INCIDENT
Refer to "INTERMITTENT INCIDENT ".

: INSPECTION END