Toyota Celica Supra 1986 Service And Repair Manual page 123

EFI SYSTEM - Troubleshooting
F1·21
I
OK CONTINUED FROM PAGE F1·20
'
CHECK FUEL PRESSURE
!See page Fl ·451
OK
CHECK INJECTORS
(See page F1·531
OK
CHECK SPARK PLUGS
Max. allowable gap:
1.4 mm (0.066 in.)
Precautioo:
Never attempt to adjust gap
on used platinum tlppad spark plug.
- Note-
Check compression p ressure
if
necessary.
!See page EM ·61
OK
CHECK EFI ELECTRONIC CIRCUIT
USING VOLT/OHMMETER
•
BAD
BAD
NO
BAD
I. Fuel pump !See page F1·44)
2.
Fuel f ilter
3 . Fuel pressure regulator (See page F1·521
!Injection condition
I. Spark plug
2.
Compression pressure
Umit; 9.0 kg/ em' (128 psi. B83 kPal
at 260 rpm
1.
W iring connection
2. Power to ECU
111 Fusible link
(2) No. 1 and No. 2 main ralay
3 . A ir flow meter
4. Water temp.
sensor
5.
Air temp. sensor
6 . Throttle position sensor
7.
Injection signal circuit
(1) Injector wirings
121 Resistor
131 ECU
I