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Problem Symptoms Table

HINT:

When a malfunction is not confirmed by a DTC (Diagnostic Trouble Code) check and the cause of problem cannot be identified through a basic inspection, troubleshoot according to the priority order indicated in the table below.

PROBLEM SYMPTOMS CHART

Symptom Suspected area
Engine does not crank (does not start) 1. STARTER
2. STARTER RELAY
3. Park/Neutral position switch circuit*1 (ON-VEHICLE INSPECTION )
4. CLUTCH START SWITCH *2
No initial combustion (does not start) 1. ECM POWER SOURCE CIRCUIT 
2. VC OUTPUT CIRCUIT 
3. IGNITION COIL CIRCUIT 
4. FUEL PUMP CONTROL CIRCUIT 
5. Injector (INSPECTION )
Incomplete combustion (does not start) 1. FUEL PUMP CONTROL CIRCUIT 
2. IGNITION COIL CIRCUIT 
3. Injector (INSPECTION )
Engine cranks normally but difficult to start 1. STARTER SIGNAL CIRCUIT 
2. IAC VALVE CIRCUIT 
3. FUEL PUMP CONTROL CIRCUIT 
4. IGNITION COIL 
5. Spark plug (ON-VEHICLE INSPECTION )
6. Compression (ON-VEHICLE INSPECTION )
7. Injector (INSPECTION )
Difficult to start with cold engine 1. STARTER SIGNAL CIRCUIT 
2. IAC VALVE CIRCUIT 
3. FUEL PUMP CONTROL CIRCUIT 
4. Injector (INSPECTION )
5. IGNITION COIL 
6. Spark plug (ON-VEHICLE INSPECTION )
Difficult to start with warm engine 1. STARTER SIGNAL CIRCUIT 
2. IAC VALVE CIRCUIT 
3. FUEL PUMP CONTROL CIRCUIT 
4. Injector (INSPECTION )
5. IGNITION COIL 
6. Spark plug (ON-VEHICLE INSPECTION )
Incorrect fast idle (poor idling) 1. IAC VALVE CIRCUIT 
High engine idling speed (poor idling) 1. IAC VALVE CIRCUIT 
2. ECM POWER SOURCE CIRCUIT 
3. Park/Neutral position switch circuit*1 (ON-VEHICLE INSPECTION )
Low engine idling speed (poor idling) 1. IAC VALVE CIRCUIT 
2. Park/Neutral position switch circuit*1 (ON-VEHICLE INSPECTION )
3. FUEL PUMP CONTROL CIRCUIT 
4. Injector (INSPECTION )
Rough idling 1. IAC VALVE CIRCUIT 
2. Injector (INSPECTION )
3. IGNITION COIL 
4. Compression (ON-VEHICLE INSPECTION )
5. FUEL PUMP CONTROL CIRCUIT 
Hunting (poor idling) 1. IAC VALVE CIRCUIT 
2. ECM POWER SOURCE CIRCUIT 
3. FUEL PUMP CONTROL CIRCUIT 
Hesitation/Poor acceleration (poor driveability) 1. Injector (INSPECTION )
2. FUEL PUMP CONTROL CIRCUIT 
3. IGNITION COIL CIRCUIT 
Muffler explosion, after fire (poor driveability) 1. IGNITION COIL 
2. Spark plug (ON-VEHICLE INSPECTION )
3. Injector (INSPECTION )
Surging (poor driveability) 1. FUEL PUMP CONTROL CIRCUIT 
2. Spark plug (ON-VEHICLE INSPECTION )
3. Injector (INSPECTION )
Engine stalls soon after starting 1. FUEL PUMP CONTROL CIRCUIT 
2. IAC VALVE CIRCUIT 
Engine stalls when accelerator pedal released 1. Injector (INSPECTION )
2. IAC VALVE CIRCUIT 
3. ECM 
Engine stalls when shifting from N to D 1. Park/Neutral position switch circuit*1 (ON-VEHICLE INSPECTION )
2. IAC VALVE CIRCUIT 
Unable/difficult to refuel 1. Refueling valve (canister)
HINT:
  • *1: A/T (Automatic Transaxle) only
  • *2: M/T (Manual Transaxle) only