Page 1089 of 2389
Check that there is voltage between ECU terminal A/C and body
ground. There is no voltage between ECU terminals A/C and El.
(Air conditioning ON)
Check wiring between ECU terminal E 1 and body
ground.
Check that there is voltage between
amplifier terminal and body ground.
Check wiring between amplifier and
ECU or compressor.Check wiring
between ECU
terminal A/C and
amplifier. Check compressor running.Air conditioning ON
Repair or replace.Repair or replace. Try another ECU.Repair or replace.
Repair or replace.STD voltage
No voltage
IG SW ON Terminals
Condition Trouble
BAD
BAD
BADBAD
BAD No.
± EFI SYSTEMTroubleshooting with Volt OhmmeterFI±65
Page 1090 of 2389
Check that there is specified voltage between ECU terminals VF
and body ground. ¿ There is no voltage between ECU terminals VF and E 1.
Check wiring between ECU terminal E i and body ground.
Check for suction of air into exhaust system.
Check wiring between oxygen sensors and
ECU connectors. ¿¿ Check operation of oxygen sensors.Check for air leak from air intake system.
Check cold start injector.Check distributor and ignition system.
Replace oxygen sensors.* Rich malfunction only Check fuel pressure.
Check air flow meter.Check spark plugs.Repair air suction.
Repair or replace. Repair or replace_Repair or replace.
Repair or replace.
Repair or replace.Repair or replace.
Repair or replace. Try another ECU.
Check injectors.
System normal.Repair air leak.
Repair wiring. BAD
BAD
BADBADBAD BAD
BAD
BAD
BAD BADBAD
± EFI SYSTEMTroubleshooting with Volt OhmmeterFI±66
Page 1091 of 2389
Check that there is voltage between ECU terminal +B
(+B1) and body ground. (IG SW ON)No voltage between ECU terminal THG and E2.
(IG SW ON)
Check wiring between ECU terminal E1 and body ground.
Check wiring between ECU and
EGR gas temp. sensor. Check EGR gas temp. sensor.
(See page FI±126)
Replace EGR gas
temp. sensor.Refer to No. 1.
(See page FI±32)
Check EGR system.Repair or replace.
Repair or replace.
Repair or replace.
Try another ECU.
BAD
BAD
BAD BAD
± EFI SYSTEMTroubleshooting with Volt OhmmeterFI±67
Page 1092 of 2389
ON±VEHICLE INSPECTION
INSPECT RESISTANCE OF COLD START INJECTOR
(a) Disconnect the cold start injector connector.
(b) Using an ohmmeter, measure the resistance between
the terminals.
Resistance: 2 ± 4
If the resistance is not as specified, replace the cold start
injector.
(e) Reconnect the cold start injector connector.
REMOVAL OF COLD START INJECTOR
1. DISCONNECT CABLE FROM NEGATIVE TERMINAL
OF BATTERY
2. DISCONNECT COLD START INJECTOR CONNECTOR
3. DISCONNECT COLD START INJECTOR PIPE
(a) Put a suitable container or shop towel under the injector
tube.
(b) Remove the two union bolts and four gaskets and injector
pipe. .
HINT: Slowly loosen the union bolt.
4. REMOVE COLD START INJECTOR
Remove the two bolts, cold start injector and gasket.
Cold Start Injector (3S±FE)
± EFI SYSTEMFuel System (Cold Start Injector (3S±FE))FI±78
Page 1093 of 2389

INSPECTION OF COLD START
INJECTOR
1. INSPECT INJECTION OF COLD START INJECTOR
NOTICE: Keep clear for sparks during the test.
(a) Install SST (two unions) to the injector and delivery
pipe with new gaskets and the union bolts.
SST 09268±41045 (09268±41080)
(b) Connect SST (hose) to the unions.
SST 09268±41045
(c) Connect SST (wire) to the injector.
SST 09842±30050
(d) Put a container under the injector.
(e) Reconnect the battery negative (±) cable.
(f) Turn the ignition switch ON.
NOTICE: Do not start the engine.
2. INSPECT LEAKAGE
(a) In the condition above, disconnect the test probes of
SST (wire) from the battery and check fuel leakage from the
injector.
SST 09842±30050
Fuel drop: One drop or less per minute
(b) Disconnect the battery negative H cable.
(c) Remove SST and the service wire.
SST 09268±41045 and 09842±30050(h) Connect the test probes of the SST (wire) to the
battery, and check that the fuel spray is as shown.
SST 09842±30050
NOTICE: Perform this check within the shortest pos-
sible time.
(g) Using SST, connect terminals +B and FP of the
check connector.
SST 09843±18020
± EFI SYSTEMFuel System (Cold Start Injector (3S±FE))FI±79
Page 1094 of 2389
INSTALLATION OF COLD START INJECTOR
1. INSTALL COLD START INJECTOR
Install a new gasket and the injector with the two bolts.
Torque: 95 kg±cm (82 in.±Ib, 9.3 N±m)
3. CONNECT COLD START INJECTOR CONNECTOR
4. CONNECT CABLE TO NEGATIVE TERMINAL OF
BATTERY
5. CHECK FOR FUEL LEAKAGE (See page FI±9) 2. CONNECT COLD START INJECTOR PIPE
Install the injector pipe with new four gaskets and the two
union bolts.
Torque: 180 kg±cm (13 ft±lb, 18 N±m)
± EFI SYSTEMFuel System (Cold Start Injector (3S±FE))FI±80
Page 1095 of 2389
ON±VEHICLE INSPECTION
INSPECT RESISTANCE OF COLD START INJECTOR
(a) Disconnect the cold start injector connector.
(b) Using an ohmmeter, measure the resistance between the
terminals.
Resistance: 2 ± 4
If the resistance is not as specified, replace the cold start
injector.
(e) Reconnect the cold start injector connector.
REMOVAL OF COLD START INJECTOR
1. DISCONNECT CABLE FROM NEGATIVE TERMINAL
OF BATTERY
2. DISCONNECT COLD START INJECTOR CONNECTOR
3. DISCONNECT COLD START INJECTOR TUBE
(a) Put a suitable container or shop towel under the injector tube.
(b) Remove the union bolt and two gaskets, and disconnect the
injector tube.
HINT: Slowly loosen the union bolt.
(e) Disconnect the injector tube from the clamp.
4. REMOVE COLD START INJECTOR
Remove the two bolts, cold start injector and gasket.
Cold Start Injector (2VZ±FE)
± EFI SYSTEMFuel System (Cold Start Injector (2VZ±FE))FI±81
Page 1096 of 2389

INSPECTION OF COLD START
INJECTOR
1. INSPECT INJECTION OF COLD START INJECTOR
NOTICE: Keep clear for sparks during the test.
(a) Install SST (two unions) to the injector and delivery pipe with
new gaskets and the union bolts.
SST 09268±41045 (09268±41080)
(b) Connect SST (hose) to the unions.
SST 09268±41045
(e) Connect SST (wire) to the injector.
SST 09842±30050
(d) Put a container under the injector.
(e) Reconnect the battery negative (±) cable.
(f) Turn the ignition switch ON.
NOTICE: Do not start the engine.
2. INSPECT LEAKAGE ±
(a) In the condition above, disconnect the test probes of
SST (wire) from the battery and check fuel leakage from
the injector.
SST 09842±30050
Fuel drop: One drop or less per minute
(b) Disconnect the battery negative (±) cable.
(c) Remove SST and the service wire.
SST 09268±41045,09842±30050 and 09843±18020 (h) Connect the test probes of the SST (wire) to the battery,
and check that the fuel spray is as shown.
SST 09842±30050
NOTICE: Perform this check within the shortest pos-
sible time.
(g) Using SST, connect terminals +B and FP of the check
connector.
SST 09843±18020
± EFI SYSTEMFuel System (Cold Start Injector (2VZ±FE))FI±82