Diagnosis Procedure

DIAGNOSIS PROCEDURE CHART

Step	Action	YES	NO
1	CHECK GROUND CONNECTIONS Turn ignition switch OFF. Loosen and retighten two ground screws on the body. Refer to [POWER SUPPLY AND GROUND CIRCUIT CHECK ]. Courtesy of SUZUKI OF AMERICA CORP. OK or NG	GO TO 2.	Repair or replace ground connections.
2	CHECK PSP SENSOR POWER SUPPLY CIRCUIT Disconnect power steering pressure (PSP) sensor harness connector. Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. 2. Turn ignition switch ON. 3. Check voltage between PSP sensor terminal 3 and ground with SDT or tester. Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. Voltage: Approximately 5V OK or NG	GO TO 3.	Repair open circuit, short to ground or short to power in harness or connectors.
3	CHECK PSP SENSOR GROUND CIRCUIT FOR OPEN AND SHORT Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between PSP sensor terminal 1 and ECM terminal 67. Refer to WIRING DIAGRAM . Continuity should exist. Also check harness for short to ground and short to power. OK or NG	GO TO 4.	Repair open circuit, short to ground or short to power in harness or connectors.
4	CHECK PSP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT Check harness continuity between ECM terminal 12 and PSP sensor terminal 2. Refer to WIRING DIAGRAM . Continuity should exist. Also check harness for short to ground and short to power. OK or NG	GO TO 5.	Repair open circuit, short to ground or short to power in harness or connectors.
5	CHECK PSP SENSOR Refer to [P0550 PSP SENSOR ]. OK or NG	GO TO 6.	Replace PSP sensor.
6	CHECK INTERMITTENT INCIDENT Refer to [SERVICE INFORMATION FOR ELECTRICAL INCIDENT: INTERMITTENT INCIDENT ]	INSPECTION END