4-22
Fl SYSTEM DIAGNOSIS
MALFUNCTION
CODE
DETECTED ITEM
Secondary throttle
valve actuator
Secondary throttle
position sensor
Gear position signal
Fuel injector #11#2
Fuel pump relay
Ignition switch
Heated oxygen sensor
(H02S)
[E-02, 191
PAlR control solenoid
valve
DETECTED FAILURE CONDITION
CHECK FOR
When no actuator control signal is supplied from the ECM or
communication signal does not reach ECM or operation voltage
does not reach STVA motor, C28 is indicated. STVA can not
operate.
STVA lead wirelcoupler.
The sensor should produce following voltage.
0.1 V
5
sensor voltage
$
4.8 V
Without the above ranae for 4 sec. and more. C29 is indicated.
w
Secondary throttle position sensor, lead wire/coupler connec-
tion.
It judges from gear position voltage, engine speed and throttle
position by ECM, when the gear position voltage is 0.2 V and
less.
Gear position sensor, wiring/coupler connection. Gearshift cam
etc.
When fuel injector voltage gets 1.3 V and less, C32 or C33 is
indicated.
-
Injector, wiringlcoupler connection, power supply to the injector.
No voltage is applied to the both injectors #1/#2 for
3
sec. after
the contact of fuel pump relay is turned ON. Or voltage is
applied to the both injectors #11#2, when the contact of fuel
pump is OFF.
Fuel pump relay, connecting lead wire, power source to fuel
Dumw relay. fuel iniectors.
lgnition switch signal is not input in ECM.
lgnition switch, lead wirelcoupler.
The sensor voltage should be the following and less after warm-
ing up condition.
(Sensor voltage
5
0.4
V)
Without the above value, C44 is indicated
Heater operation voltage does not reach in the oxygen heater
circuit, C44 in indicated.
The Heater can not operate.
H02S lead wirelcoupler connection.
Batterv voltaae
SUDDIY
to the H02S.
PAlR control solenoid valve voltage is not input in ECM.
PAlR control solenoid valve, lead wirelcoupler.
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