Sfi System Problem Symptoms Table

Sfi System -- Problem Symptoms Table


HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, 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
Symptom
Suspected Area
See page
Engine does not crank (Does not start)
Battery
LandCruiser RM000001AR90C2X_01_0001.html
Starter
LandCruiser RM0000015XW02EX.html
Starter relay
LandCruiser RM000001FFP05FX_01_0001.html
Park/neutral position switch
LandCruiser RM000000OD401HX.html
Clutch start switch
LandCruiser RM0000032S300DX.html
Entry and start system
LandCruiser RM000000YEF0MNX.html
No initial combustion (Does not start)
ECM power source circuit
LandCruiser RM000001DN80BOX.html
Crankshaft position sensor
LandCruiser RM0000028AP01EX_01_0001.html
Ignition system
LandCruiser RM000000SM6078X_02_0001.html
Fuel pump control circuit
LandCruiser RM0000030MH07PX.html
ECM
LandCruiser RM000000PDH0ROX.html
Starter signal circuit
LandCruiser RM000000TI40AJX.html
VC output circuit
LandCruiser RM000001D6V0W8X.html
Immobiliser system (w/ Entry and Start System)
LandCruiser RM000000QY40G3X.html
Immobiliser system (w/o Entry and Start System)
LandCruiser RM000001GUQ05EX.html
Valve rocker arm*
-
Engine cranks normally but difficult to start
Fuel pump control circuit
LandCruiser RM0000030MH07PX.html
Compression
LandCruiser RM0000017L801WX_01_0009.html
Starter signal circuit
LandCruiser RM000000TI40AJX.html
ECM power source circuit
LandCruiser RM000001DN80BOX.html
Valve rocker arm*
-
Difficult to start with cold engine
Ignition system
LandCruiser RM000000SM6078X_02_0001.html
Spark plug
LandCruiser RM000000SM6078X_02_0002.html
Fuel pump control circuit
LandCruiser RM0000030MH07PX.html
Fuel injector assembly
LandCruiser RM000000WQQ0BHX.html
Difficult to start with warm engine
Fuel injector assembly
LandCruiser RM000000WQQ0BHX.html
Ignition system
LandCruiser RM000000SM6078X_02_0001.html
Spark plug
LandCruiser RM000000SM6078X_02_0002.html
Fuel pump control circuit
LandCruiser RM0000030MH07PX.html
High engine idle speed
Electronic throttle control system
LandCruiser RM000002PQO04TX.html
A/C signal circuit (for automatic air conditioning system)
LandCruiser RM000002LIM07YX.html
A/C signal circuit (for manual air conditioning system)
LandCruiser RM000002LIM07ZX.html
ECM power source circuit
LandCruiser RM000001DN80BOX.html
Low engine idle speed (Poor idling)
Electronic throttle control system
LandCruiser RM000002PQO04TX.html
A/C signal circuit (for automatic air conditioning system)
LandCruiser RM000002LIM07YX.html
A/C signal circuit (for manual air conditioning system)
LandCruiser RM000002LIM07ZX.html
Fuel pump control circuit
LandCruiser RM0000030MH07PX.html
Air induction system (w/ Secondary Air Injection System)
LandCruiser RM00000292O01LX_01_0003.html
Air induction system (w/o Secondary Air Injection System)
LandCruiser RM00000292O01MX_01_0003.html
PCV hose (w/ Secondary Air Injection System)
LandCruiser RM00000292O01LX_01_0003.html
PCV hose (w/o Secondary Air Injection System)
LandCruiser RM00000292O01MX_01_0010.html
Rough idling
Compression
LandCruiser RM0000017L801WX_01_0009.html
Spark plug
LandCruiser RM000000SM6078X_02_0002.html
Fuel injector assembly
LandCruiser RM000000WQQ0BHX.html
Ignition system
LandCruiser RM000000SM6078X_02_0001.html
Fuel pump control circuit
LandCruiser RM0000030MH07PX.html
Electronic throttle control system
LandCruiser RM000002PQO04TX.html
Air induction system (w/ Secondary Air Injection System)
LandCruiser RM00000292O01LX_01_0003.html
Air induction system (w/o Secondary Air Injection System)
LandCruiser RM00000292O01MX_01_0003.html
PCV hose (w/ Secondary Air Injection System)
LandCruiser RM00000292O01LX_01_0003.html
PCV hose (w/o Secondary Air Injection System)
LandCruiser RM00000292O01MX_01_0010.html
Mass air flow meter
LandCruiser RM000002PPR02RX.html
Valve rocker arm*
-
Idle hunting
Electronic throttle control system
LandCruiser RM000002PQO04TX.html
Air induction system (w/ Secondary Air Injection System)
LandCruiser RM00000292O01LX_01_0003.html
Air induction system (w/o Secondary Air Injection System)
LandCruiser RM00000292O01MX_01_0003.html
ECM power source circuit
LandCruiser RM000001DN80BOX.html
Hesitation/poor acceleration
Fuel pump control circuit
LandCruiser RM0000030MH07PX.html
Spark plug
LandCruiser RM000000SM6078X_02_0002.html
Ignition system
LandCruiser RM000000SM6078X.html
Fuel injector assembly
LandCruiser RM000000WQQ0BHX.html
Mass air flow meter
LandCruiser RM000002PPR02RX.html
Electronic throttle control system
LandCruiser RM000002PQO04TX.html
Air induction system (w/ Secondary Air Injection System)
LandCruiser RM00000292O01LX_01_0003.html
Air induction system (w/o Secondary Air Injection System)
LandCruiser RM00000292O01MX_01_0003.html
Compression
LandCruiser RM0000017L801WX_01_0009.html
Brake override system
LandCruiser RM000004G8F0VZX.html
Valve rocker arm*
-
Surging (Poor driveability)
Spark plug
LandCruiser RM000000SM6078X_02_0002.html
Fuel pump control circuit
LandCruiser RM0000030MH07PX.html
Ignition system
LandCruiser RM000000SM6078X_02_0001.html
Fuel injector assembly
LandCruiser RM000000WQQ0BHX.html
Mass air flow meter
LandCruiser RM000002PPR02RX.html
Variable valve timing system
LandCruiser RM000000WBZ0SDX_09_0017.html
Compression
LandCruiser RM0000017L801WX_01_0009.html
Valve rocker arm*
-
Engine stalls soon after starting
Fuel pump control circuit
LandCruiser RM0000030MH07PX.html
Spark plug
LandCruiser RM000000SM6078X_02_0002.html
Ignition system
LandCruiser RM000000SM6078X_02_0001.html
Fuel injector assembly
LandCruiser RM000000WQQ0BHX.html
Variable valve timing system
LandCruiser RM000000WBZ0SDX_09_0017.html
Electronic throttle control system
LandCruiser RM000002PQO04TX.html
Air induction system (w/ Secondary Air Injection System)
LandCruiser RM00000292O01LX_01_0003.html
Air induction system (w/o Secondary Air Injection System)
LandCruiser RM00000292O01MX_01_0003.html
PCV hose (w/ Secondary Air Injection System)
LandCruiser RM00000292O01LX_01_0003.html
PCV hose (w/o Secondary Air Injection System)
LandCruiser RM00000292O01MX_01_0010.html
Compression
LandCruiser RM0000017L801WX_01_0009.html
Valve rocker arm*
-
Engine stalls only during A/C operation
A/C signal circuit (for automatic air conditioning system)
LandCruiser RM000002LIM07YX.html
A/C signal circuit (for manual air conditioning system)
LandCruiser RM000002LIM07ZX.html
ECM
LandCruiser RM000000PDH0ROX.html
HINT:
*: Check "Fuel Cut Elps Time" in the Data List. If the elapsed time is over 0 sec, then the engine speed is high (More than the engine speed at which fuel cut occurs + 500 rpm). When this has happened, there is a possibility that the valve rocker arm will become loose and malfunction, so check that the valve rocker arm is properly attached (LandCruiser RM000002BK5053X.html).