Problem Symptoms Table

2009 Toyota 4Runner Limited, 4.0 U, RWDSECTION 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.

SFI SYSTEM 

PROBLEM SYMPTOMS TABLE

Symptom Suspected Area Information
Engine does not crank (Does not start) Immobilizer system HOW TO PROCEED WITH TROUBLESHOOTING
Starter (for Standard) INSPECTION
Starter (for Cold Area) INSPECTION
STARTER relay INSPECTION
No initial combustion (Does not start) ECM power source circuit ECM POWER SOURCE CIRCUIT 
Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT 
VC output circuit VC OUTPUT CIRCUIT 
ECM ECM 
Engine cranks normally but difficult to start Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT 
Compression ON-VEHICLE INSPECTION
Difficult to start with cold engine Starter signal circuit DTC P0617: STARTER RELAY CIRCUIT HIGH 
Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT 
Spark plug ON-VEHICLE INSPECTION
Ignition system DTC P0351, P0352, P0353, P0354, P0355, P0356: IGNITION COIL "A" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "B" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "C" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "D" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "E" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "F" PRIMARY/SECONDARY CIRCUIT 
Injector DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306: RANDOM/MULTIPLE CYLINDER MISFIRE DETECTED; CYLINDER 1 MISFIRE DETECTED; CYLINDER 2 MISFIRE DETECTED; CYLINDER 3 MISFIRE DETECTED; CYLINDER 4 MISFIRE DETECTED; CYLINDER 5 MISFIRE DETECTED; CYLINDER 6 MISFIRE DETECTED 
Difficult to start with warm engine Starter signal circuit DTC P0617: STARTER RELAY CIRCUIT HIGH 
Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT 
Spark plug ON-VEHICLE INSPECTION
Ignition system DTC P0351, P0352, P0353, P0354, P0355, P0356: IGNITION COIL "A" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "B" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "C" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "D" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "E" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "F" PRIMARY/SECONDARY CIRCUIT 
Injector DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306: RANDOM/MULTIPLE CYLINDER MISFIRE DETECTED; CYLINDER 1 MISFIRE DETECTED; CYLINDER 2 MISFIRE DETECTED; CYLINDER 3 MISFIRE DETECTED; CYLINDER 4 MISFIRE DETECTED; CYLINDER 5 MISFIRE DETECTED; CYLINDER 6 MISFIRE DETECTED 
High engine idling speed (Poor idling) A/C signal circuit (compressor circuit) COMPRESSOR CIRCUIT
ECM power source circuit ECM POWER SOURCE CIRCUIT 
Electronic throttle control system DTC P0120, P0122, P0123, P0220, P0222, P0223, P2135: THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT; THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT LOW INPUT; THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT HIGH INPUT; THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT; THROTTLE/PEDAL POSITION SENSOR WITCH "B" CIRCUIT LOW INPUT; THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT HIGH INPUT; THROTTLE/PEDAL POSITION SENSOR/SWITCH "A"/"B" VOLTAGE CORRELATION 
Air induction system -
PCV hose -
Low engine idling speed (Poor idling) A/C signal circuit (compressor circuit) COMPRESSOR CIRCUIT
Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT 
Electronic throttle control system DTC P0120, P0122, P0123, P0220, P0222, P0223, P2135: THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT; THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT LOW INPUT; THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT HIGH INPUT; THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT; THROTTLE/PEDAL POSITION SENSOR WITCH "B" CIRCUIT LOW INPUT; THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT HIGH INPUT; THROTTLE/PEDAL POSITION SENSOR/SWITCH "A"/"B" VOLTAGE CORRELATION 
Air induction system -
PCV hose -
Rough idling (Poor idling) Compression ON-VEHICLE INSPECTION
Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT 
Electronic throttle control system DTC P0120, P0122, P0123, P0220, P0222, P0223, P2135: THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT; THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT LOW INPUT; THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT HIGH INPUT; THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT; THROTTLE/PEDAL POSITION SENSOR WITCH "B" CIRCUIT LOW INPUT; THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT HIGH INPUT; THROTTLE/PEDAL POSITION SENSOR/SWITCH "A"/"B" VOLTAGE CORRELATION 
Air induction system -
PCV hose -
Hunting (Poor idling) ECM power source circuit ECM POWER SOURCE CIRCUIT 
Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT 
Spark plug ON-VEHICLE INSPECTION
Ignition system DTC P0351, P0352, P0353, P0354, P0355, P0356: IGNITION COIL "A" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "B" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "C" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "D" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "E" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "F" PRIMARY/SECONDARY CIRCUIT 
Injector DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306: RANDOM/MULTIPLE CYLINDER MISFIRE DETECTED; CYLINDER 1 MISFIRE DETECTED; CYLINDER 2 MISFIRE DETECTED; CYLINDER 3 MISFIRE DETECTED; CYLINDER 4 MISFIRE DETECTED; CYLINDER 5 MISFIRE DETECTED; CYLINDER 6 MISFIRE DETECTED 
Electronic throttle control system DTC P0120, P0122, P0123, P0220, P0222, P0223, P2135: THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT; THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT LOW INPUT; THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT HIGH INPUT; THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT; THROTTLE/PEDAL POSITION SENSOR WITCH "B" CIRCUIT LOW INPUT; THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT HIGH INPUT; THROTTLE/PEDAL POSITION SENSOR/SWITCH "A"/"B" VOLTAGE CORRELATION 
Air induction system -
PCV hose -
Hesitation/Poor acceleration (Poor driveability) Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT 
A/T faulty (A750F) HOW TO PROCEED WITH TROUBLESHOOTING
A/T faulty (A750E) HOW TO PROCEED WITH TROUBLESHOOTING
Spark plug ON-VEHICLE INSPECTION
Ignition system DTC P0351, P0352, P0353, P0354, P0355, P0356: IGNITION COIL "A" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "B" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "C" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "D" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "E" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "F" PRIMARY/SECONDARY CIRCUIT 
Injector DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306: RANDOM/MULTIPLE CYLINDER MISFIRE DETECTED; CYLINDER 1 MISFIRE DETECTED; CYLINDER 2 MISFIRE DETECTED; CYLINDER 3 MISFIRE DETECTED; CYLINDER 4 MISFIRE DETECTED; CYLINDER 5 MISFIRE DETECTED; CYLINDER 6 MISFIRE DETECTED 
Surging (Poor driveability) Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT 
Spark plug ON-VEHICLE INSPECTION
Ignition system DTC P0351, P0352, P0353, P0354, P0355, P0356: IGNITION COIL "A" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "B" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "C" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "D" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "E" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "F" PRIMARY/SECONDARY CIRCUIT 
Injector DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306: RANDOM/MULTIPLE CYLINDER MISFIRE DETECTED; CYLINDER 1 MISFIRE DETECTED; CYLINDER 2 MISFIRE DETECTED; CYLINDER 3 MISFIRE DETECTED; CYLINDER 4 MISFIRE DETECTED; CYLINDER 5 MISFIRE DETECTED; CYLINDER 6 MISFIRE DETECTED 
Engine stalls soon after starting Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT 
Spark plug ON-VEHICLE INSPECTION
Ignition system DTC P0351, P0352, P0353, P0354, P0355, P0356: IGNITION COIL "A" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "B" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "C" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "D" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "E" PRIMARY/SECONDARY CIRCUIT; IGNITION COIL "F" PRIMARY/SECONDARY CIRCUIT 
Injector DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306: RANDOM/MULTIPLE CYLINDER MISFIRE DETECTED; CYLINDER 1 MISFIRE DETECTED; CYLINDER 2 MISFIRE DETECTED; CYLINDER 3 MISFIRE DETECTED; CYLINDER 4 MISFIRE DETECTED; CYLINDER 5 MISFIRE DETECTED; CYLINDER 6 MISFIRE DETECTED 
Engine stalls during A/C operation A/C signal circuit (Compressor circuit) COMPRESSOR CIRCUIT
ECM ECM 
Unable/difficult to refuel Refueling valve (canister) -
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.