Toyota Supra 1990 Manual page 187

HI SYSTEM - Troubleshooting FI-13
~
OK CONTINUED FROM PAGE FI-12
CHECK FUEL SUPPLY TO INJECTOR
1. Fuel in tank
2. Fuel pressure in fuel line
(1)
Connect terminals Fp and +B of the
check connector.
(2) You can feel fuel pressure in fuel
retu
rn
hose.
3. Check circuit opening relay
(See page FI-110)
~OK
CHECK FUEL PUMP SWITCH IN AIR
FLOW METER (7M-GE)
Check continuity between terminals FC and
E 1 with measuring plate of air flow meter
open.
~OK
CHECK IGNITION TIMING
1. Connect terminals TEl and El of the
check connector.
2. Check ignition timing.
STD: 10
0
BTDC
@
idle
[wi connect terminals TEl and El]
~OK
CHECK EFI ELECTRONIC CIRCUIT
USING VOL TIOHMMETER
(See pages FI-30, 49)
t--~~~---1
1. Fuel line - leakage - deformation
BAD
2. Fuse
3. Fuel pump (See page F 1-70)
4. Fuel filter
5. Fuel pressure regulator (See page FI-81)
6.
Circuit opening relay (See page FI-110)
t--~~~--i
Air flow meter (See page FI-94)
BAD
t--~~~--l
Adjust ignition timing (See page IG-20)
NO
t--~~~--l
1. Wiring connection
NO 2. Power to ECU
(1)
Fusible links
(2) Fuses
(3) EFI main relay
3. Air flow meter
4. Water temp. sensor
5. Air temp. sensor
6. Injection signal circuit
(1) I njector wiring
(2) Resistor (7M-GTE)
(3) ECU