Problem Symptoms Table

HINT:

Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

SFI system

PROBLEM SYMPTOMS

Symptom	Suspected area	See
Engine does not crank (Does not start)	1. Battery	BATTERY CURRENT SENSOR
	2. Starter	STARTER
	3. Starter relay	STARTER RELAY
	4. Park/neutral position switch	PARK / NEUTRAL POSITION SWITCH
	5. Immobilizer system	ENGINE IMMOBILIZER SYSTEM
No initial combustion (Does not start)	1. ECM power source circuit	ECM POWER SOURCE CIRCUIT
	2. Crankshaft position sensor	REMOVAL
	3. Camshaft position sensor	REMOVAL
	4. Ignition system	IGNITION SYSTEM
	5. Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
	6. ECM	TERMINALS OF ECM
	7. VC output circuit	VC OUTPUT CIRCUIT
Engine cranks normally but difficult to start	1. Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
Engine cranks normally but difficult to start	2. Compression	ON-VEHICLE INSPECTION
Difficult to start with cold engine	1. Ignition system	IGNITION SYSTEM
	2. Spark plug	IGNITION COIL
	3. Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
	4. Injector	FUEL INJECTOR
Difficult to start with warm engine	1. Injector	FUEL INJECTOR
	2. Ignition system	IGNITION SYSTEM
	3. Spark plug	IGNITION COIL
	4. Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
High engine idle speed	1. Electronic throttle control system	DTC P2102 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW; DTC P2103 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH
	2. A/C signal circuit	-
	3. ECM power source circuit	ECM POWER SOURCE CIRCUIT
Low engine idle speed (Poor idling)	1. Electronic throttle control system	DTC P2102 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW; DTC P2103 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH
	2. A/C signal circuit	-
	3. Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
	4. Air induction system	ON-VEHICLE INSPECTION
	5. PCV hose	ON-VEHICLE INSPECTION
Rough idling	1. Compression	ON-VEHICLE INSPECTION
	2. Spark plug	IGNITION COIL
	3. Injector	FUEL INJECTOR
	4. Ignition system	IGNITION SYSTEM
	5. Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
	6. Electronic throttle control system	DTC P2102 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW; DTC P2103 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH
	7. Air induction system	ON-VEHICLE INSPECTION
	8. PCV hose	ON-VEHICLE INSPECTION
	9. Mass air flow meter	ON-VEHICLE INSPECTION
Idle hunting	1. Electronic throttle control system	DTC P2102 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW; DTC P2103 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH
	2. Air induction system	ON-VEHICLE INSPECTION
	3. ECM power source circuit	ECM POWER SOURCE CIRCUIT
Hesitation/Poor acceleration	1. Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
	2. Spark plug	IGNITION COIL
	3. Ignition system	IGNITION SYSTEM
	4. Injector	FUEL INJECTOR
	5. Mass air flow meter	ON-VEHICLE INSPECTION
	6. Electronic throttle control system	DTC P2102 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW; DTC P2103 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH
	7. Air induction system	ON-VEHICLE INSPECTION
	8. Compression	ON-VEHICLE INSPECTION
Surging (Poor driveability)	1. Spark plug	IGNITION COIL
	2. Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
	3. Ignition system	IGNITION SYSTEM
	4. Injector	FUEL INJECTOR
	5. Mass air flow meter	ON-VEHICLE INSPECTION
	6. Variable valve timing system	DTC P0011 CAMSHAFT POSITION "A" - TIMING OVER-ADVANCED OR SYSTEM PERFORMANCE (BANK 1); DTC P0012 CAMSHAFT POSITION "A" - TIMING OVER-RETARDED (BANK 1)
	7. Compression	ON-VEHICLE INSPECTION
Engine stalls soon after starting	1. Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
	2. Spark plug	IGNITION COIL
	3. Ignition system	IGNITION SYSTEM
	4. Injector	FUEL INJECTOR
	5. Variable valve timing system	DTC P0011 CAMSHAFT POSITION "A" - TIMING OVER-ADVANCED OR SYSTEM PERFORMANCE (BANK 1); DTC P0012 CAMSHAFT POSITION "A" - TIMING OVER-RETARDED (BANK 1)
	6. Electronic throttle control system	DTC P2102 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW; DTC P2103 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH
	7. Air induction system	ON-VEHICLE INSPECTION
	8. PCV hose	ON-VEHICLE INSPECTION
	9. Compression	ON-VEHICLE INSPECTION
Engine stalls only during A/C operation	1. A/C signal circuit	-
Engine stalls only during A/C operation	2. ECM	TERMINALS OF ECM
Unable/difficult to refuel	1. Refueling valve (canister)	-