Page text (OCR transcript)
California vehicles only
Check Connector
V+
E1, TE1
ECU
VF
TE1
OX1
OX2
H1
+B (+B1)
E1
Oxygen Sensor
Sub-Oxygen Sensor
Sub-Oxygen Sensor Heater
FI3383
1. There is no voltage between ECU terminals VF1 and E1.
ECU
Voltmeter
V
E1
VF1
2. There is specified voltage between ECU terminal VF1 and body ground.
NO
OK
Check wiring between ECU terminal E1 and body ground.
OK
BAD
Try another ECU.
Repair or replace.
FI2947
SST
Check Connector
E1
TE1
V+
VF1
Voltmeter
V
SST
FI4210
FI4209
Check for suction of air into exhaust system.
BAD
Repair air suction.
OK
Check for air leak from air intake system.
BAD
Repair air leak.
OK
Check spark plugs.
BAD
Repair or replace.
OK
Check distributor and ignition system.
BAD
Repair or replace.
OK
Check fuel pressure.
BAD
Repair or replace.
OK
Check injectors.
BAD
Repair or replace.
OK
Check cold start injector. *
BAD
Repair or replace.
OK
Check air flow meter.
BAD
Repair or replace.
OK
Check operation of oxygen sensors.
OK
System normal.
BAD
Check wiring between oxygen sensors and ECU connectors.
BAD
Repair wiring.
OK
Replace oxygen sensors.
* Rich malfunction only
