FJ Cruiser: Engine cranks normally but won't start

Checks, in order

1. Fuel pump prime
   Turn the key to ON and listen at the rear for the pump to hum for a couple of seconds. No sound points to a fuse, relay or the pump itself.
   easy $ · under about $50
2. Fuses and relays
   Check the fuel pump and EFI fuses and relay in the engine bay fuse box. Swap the relay with a matching one if it is available.
   easy $ · under about $50
3. Security light
   A flashing immobilizer light after cranking means the computer is blocking fuel or spark. Try the spare key and check the key battery.
   easy $ · under about $50
4. Fuel pressure
   Use a gauge on the fuel rail to confirm pressure when the key is turned on. Low pressure with a running pump means a clogged filter, regulator issue or weak pump.
   medium $$ · about $50 to $500
5. Crankshaft position sensor and spark
   Scan for sensor codes and look for a tach signal while cranking. If there is none, the crank position sensor is the likely fault. Confirm spark at a plug with a spark tester.
   medium $$ · about $50 to $500

Applies to: US-market FJ Cruiser, 2007 to 2014, with the 1GR-FE 4.0L V6 (timing chain) and either the 5-speed automatic or the 6-speed manual. Assumes the part-time 4WD model with a floor-mounted transfer case lever; 2WD trucks skip the 4WD checks.

Tools and parts for these checks

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Go deeper

• Toyota 1GR-FE 4.0 V6 Engine Guide: Specs, Problems & Reliability

The same problem on other Toyotas

• 3rd Gen Tacoma (2016–2023): Engine cranks but won't start or dies right after starting
• 1st Gen Tacoma (1995.5–2004): Cranks fine but won't start or dies after starting
• 5th Gen 4Runner (2010–2024): Engine cranks but won't start
• 3rd Gen 4Runner (1996–2002): Engine cranks but won't start
• 100 Series Land Cruiser / Lexus LX 470 (1998–2007): Engine cranks normally but won't start
• 80 Series Land Cruiser (1991–1997): Cranks fine but won't fire

Other fuel & ignition problems on the FJ Cruiser

• Rough idle, stumbling or a misfire code (P0300 to P0306)
• Check engine light with P0171 or P0174 (system too lean)

More FJ Cruiser problems

• Rust on the frame, especially at the rear crossmember (Frame & Body)
• Clunk or thump from the rear when coming to a stop or pulling away (Drivetrain)
• Steering wheel shimmy or flutter at highway speed (Steering & Suspension)
• Vibration that changes with vehicle speed, felt in the seat or floor (Drivetrain)
• Oil leaking from the rear differential, or whining, howling or grinding from the rear axle (Drivetrain)
• 4WD will not engage, or the A-TRAC / VSC lights come on (Drivetrain)

All 16 FJ Cruiser symptoms in the interactive troubleshooter →

General guidance from owner experience. Confirm torque specs, fluid capacities and procedures in the factory service manual. Brakes, steering and anything structural: if in doubt, have a qualified shop inspect it before driving.