Toyota 4-Runner 1985 Repair Manual page 190

EFI SYSTEM - Troubleshooting FI-21
l
OK CONTINUED FROM PAGE FI·20
NECK INJECTORS
I
(See page F I-50)
CHECK SPARK PLUGS
Plug
gap:
0.8 mm (0.031 in.)
NOTE:
Check compression pressure if necessary.
~
OK
CHECK EFI ELECTRONIC CIRCUIT
USING VOLT/OHMMETER
f - - - - - - - . . f
Injection condition
BAD
f - - - - - - - - . I
1 . Spark plugs
BAD
2. Compression pressure
Limit: 10.0 kg/cm2 (142 psi, 981 kPa)
at 250 rpm
f------~
1 . Wiring connection
BAD
2. Power to ECU
(1) Fusible link
(2) Main relay
3. Air flow meter
4. Water thermo sensor
5. Air thermo sensor
6. Throttle position sensor
7. Injection signal
(1) Injector wiring
(2) Resistor
(3) ECU