Fuel Injection Pump Inspection

INSPECT INJECTION PUMP
INSPECT TIMING CONTROL VALVE
INSPECT INJECTION PUMP DELIVERY VALVE SUB-ASSEMBLY

Fuel Injection Pump -- Inspection

1. INSPECT INJECTION PUMP

Inspect the engine speed sensor.
1. Measure the resistance according to the value(s) in the table below.
  Standard Resistance:
  Tester Connection
  Condition
  Specified Condition
  1 (NE-) - 2 (NE+)
  20°C (68°F)
  205 to 255 Ω
  If the result is not as specified, replace the injection pump assembly.

Inspect the spill control valve.
1. Measure the resistance according to the value(s) in the table below.
  Standard Resistance:
  Tester Connection
  Condition
  Specified Condition
  1 (SPV-) - 2 (SPV+)
  20°C (68°F)
  1 to 2 Ω
  If the result is not as specified, replace the injection pump assembly.

Inspect the fuel temperature sensor.
1. Measure the resistance according to the value(s) in the table below.
  Standard Resistance:
  Tester Connection
  Condition
  Specified Condition
  1 (E2) - 2 (THF)
  20°C (68°F)
  2.21 to 2.69 kΩ
  NOTICE:
  When checking the sensor in water, be careful not to allow water to contact the terminals. After checking, wipe the water off the sensor.
  If the result is not as specified, replace the injection pump assembly.

2. INSPECT TIMING CONTROL VALVE

Inspect the timing control valve.
1. Measure the resistance according to the value(s) in the table below.
  Standard Resistance:
  Tester Connection
  Condition
  Specified Condition
  1 (+B) - 2 (TCV)
  20°C (68°F)
  10 to 14 Ω
  If the result is not as specified, replace the timing control valve.

Inspect the timing control valve operation.
NOTICE:
1. Do not apply voltage for more than 30 seconds to avoid burning out the timing control valve solenoid.
2. When performing this step, wait until the solenoid coils become cool enough that the solenoid can be touched by hand.

Connect the positive (+) lead of the battery to the timing control valve +B terminal.

Connect the negative (-) lead of the battery to the timing control valve TCV terminal.

Check that the solenoid makes a "click" sound.
If the result is not as specified, replace the timing control valve.

3. INSPECT INJECTION PUMP DELIVERY VALVE SUB-ASSEMBLY

Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.5L-E Fuel.Fuel System.Fuel Injection Pump Inspection

NOTICE:

Do not touch the sliding surface of the delivery valves.

Pull up the valve and release it. Check that it sinks smoothly into the valve seat. If the operation is not as specified, replace the valve and valve seat as a set.
HINT:
Before using a new valve set, wash off the rust prevention compound with diesel fuel. Then rewash with diesel fuel and perform the above test.