Sfi System Problem Symptoms Table

Sfi System -- Problem Symptoms Table


Use the table below to help determine the cause of the problem symptom. 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)
1. Battery
Toyota Fortuner RM000000V4300HX_01_0001.html
2. Starter signal circuit
Toyota Fortuner RM000000ZQX011X.html
3. Starter
Toyota Fortuner RM000000SH0013X.html
4. ST relay
Toyota Fortuner RM000000WPQ00KX_01_0001.html
5. Theft Deterrent System
Toyota Fortuner RM000001J8K00WX.html
No initial combustion (does not start)
1. ECM power source circuit
Toyota Fortuner RM000000ZQP00BX.html
2. VC output circuit
Toyota Fortuner RM000001EP1008X.html
3. Fuel pump control circuit
Toyota Fortuner RM000000ZQO007X.html
4. ECM
Toyota Fortuner RM000000VW200JX.html
5. Engine Immobiliser System
Toyota Fortuner RM000000Z32004X.html
No complete combustion (does not start)
1. Fuel pump control circuit
Toyota Fortuner RM000000ZQO007X.html
Engine cranks normally but difficult to start
1. Starter signal circuit
Toyota Fortuner RM000000ZQX011X.html
2. Fuel pump control circuit
Toyota Fortuner RM000000ZQO007X.html
3. Compression
Toyota Fortuner RM000000YN1008X_01_0009.html
Difficult to start with cold engine
1. Starter signal circuit
Toyota Fortuner RM000000ZQX011X.html
2. Fuel pump control circuit
Toyota Fortuner RM000000ZQO007X.html
Difficult to start with hot engine
1. Starter signal circuit
Toyota Fortuner RM000000ZQX011X.html
2. Fuel pump control circuit
Toyota Fortuner RM000000ZQO007X.html
High engine idling speed (poor idling)
1. A/C signal circuit
-
2. ECM power source circuit
Toyota Fortuner RM000000ZQP00BX.html
Low engine idling speed (poor idling)
1. A/C signal circuit
-
2. Fuel pump control circuit
Toyota Fortuner RM000000ZQO007X.html
Rough idling (poor idling)
1. Compression
Toyota Fortuner RM000000YN1008X_01_0009.html
2. Fuel pump control circuit
Toyota Fortuner RM000000ZQO007X.html
3. Variable resistor circuit*
Toyota Fortuner RM00000134E002X.html
Hunting (poor idling)
1. ECM power source circuit
Toyota Fortuner RM000000ZQP00BX.html
2. Fuel pump control circuit
Toyota Fortuner RM000000ZQO007X.html
Hesitation / Poor acceleration (poor driveability)
1. Fuel pump control circuit
Toyota Fortuner RM000000ZQO007X.html
2. Variable resistor circuit*
Toyota Fortuner RM00000134E002X.html
3. Brake Override System
Toyota Fortuner RM000004G8F089X.html
Surging (poor driveability)
1. Fuel pump control circuit
Toyota Fortuner RM000000ZQO007X.html
Engine stalls soon after starting
1. Fuel pump control circuit
Toyota Fortuner RM000000ZQO007X.html
Engine stalls during A/C operation
1. A/C signal circuit (compressor circuit)
-
2. ECM
Toyota Fortuner RM000000VW200JX.html
MIL is not illuminated
1. MIL circuit
Toyota Fortuner RM000000ZQY016X.html
HINT:
*: for Leaded Gasoline Specification Vehicle.