Diagnosis Procedure

DIAGNOSIS PROCEDURE

Step	Action	YES	NO
1	INSPECTION START Which malfunction (A or B) is duplicated? A or B	GO TO 3.	GO TO 2.
2	CHECK INTAKE SYSTEM Check the following for connection. Air duct Vacuum hoses Intake air passage between air duct and intake manifold OK or NG	GO TO 3.	Reconnect the parts.
3	CHECK GROUND CONNECTIONS Turn ignition switch OFF. Loosen and retighten three ground screws on the body. Refer to [POWER SUPPLY AND GROUND CIRCUIT CHECK ]. Courtesy of SUZUKI OF AMERICA CORP. OK or NG	GO TO 4.	Repair or replace ground connections.
4	CHECK MAF SENSOR POWER SUPPLY CIRCUIT Disconnect mass air flow (MAF) sensor harness connector. Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. 2. Turn ignition switch ON. 3. Check voltage between MAF sensor terminal 2 and ground with SDT or tester. Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP. Voltage: Battery voltage OK or NG	GO TO 6.	GO TO 5.
5	DETECT MALFUNCTIONING PART Check the following. Harness connectors E2, F32 Harness for open or short between IPDM E/R and mass air flow sensor Harness for open or short between mass air flow sensor and ECM	Repair harness or connectors.
6	CHECK MAF SENSOR GROUND CIRCUIT FOR OPEN AND SHORT Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between MAF sensor terminal 3 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 7.	Repair open circuit or short to ground or short to power in harness or connectors.
7	CHECK MAF SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT Check harness continuity between MAF sensor terminal 4 and ECM terminal 51. Refer to WIRING DIAGRAM . Continuity should exist. Also check harness for short to ground and short to power. OK or NG	GO TO 8.	Repair open circuit or short to ground or short to power in harness or connectors.
8	CHECK INTAKE AIR TEMPERATURE SENSOR Refer to [P0112, P0113 IAT SENSOR ]. OK or NG	GO TO 9.	Replace intake air temperature sensor.
9	CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR Refer to [P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR ]. OK or NG	GO TO 10.	Replace EVAP control system pressure sensor.
10	CHECK MASS AIR FLOW SENSOR Refer to [P0101 MAF SENSOR ]. OK or NG	GO TO 11.	Replace mass air flow sensor.
11	CHECK INTERMITTENT INCIDENT Refer to [SERVICE INFORMATION FOR ELECTRICAL INCIDENT: INTERMITTENT INCIDENT ]	INSPECTION END