ON-BOARD DIAGNOSTICS
MULTIPORT FUEL SYSTEM (MFI)
13A-13
.
Actuator Test Function
The actuator test items are shown in the following table.
HO2S BANK1 S2 A2 Heated oxygen sensor (rear) V
IAT SENSOR 13 Intake air temperature sensor
°C (°F)
IG. TIMING ADV 44 Ignition coils and ignition power transistor
°
LONG TRIM B1 81 Long-term fuel trim %
SHORT TRIM B1 82 Short-term fuel trim %
SYS. STATUS B1 88 Fuel system status Closed loop/
Open circuit
drive
condition
TP SENSOR 8A Throttle position sensor V (%)
VAF SENSOR 12 Volume airflow sensor (mass airflow rate) gm/s
VSS 24 Vehicle speed sensor km/h (mph)
MUT-II/III SCAN TOOL
DISPLAY
ITEM NO. INSPECTION ITEM UNIT
MUT-II/III SCAN
TOOL DISPLAY
ITEM
NO.
INSPECTION ITEM ACTIVATING CONTENT
BASIC TIMING 17 Basic ignition timing Set ignition timing adjustment mode
CONDEN.FAN.HI 37 Condenser fan Relay (HI) Condenser fan motor operates at
high speed
CONDEN.FAN.LO 38 Condenser fan Relay (LO) Condenser fan motor operates at
Low speed
EGR VACUUM
REGULATOR
SOLENOID VALVE
10 EGR vacuum regulator solenoid
valve
Solenoid valve turns from OFF to
ON
EVAP PURGE SOL 08 Evaporative emission purge
solenoid
Solenoid valve turns from OFF to
ON
EVAP VENT SOL 29 Evaporative emission ventilation
solenoid
Solenoid valve turns from OFF to
ON
FUEL PRSS SOL 09 Fuel pressure solenoid Solenoid valve turns from OFF to
ON
FUEL PUMP 07 Fuel pump Fuel pump operates at low speed
and fuel is recirculated
F/P SPD. CHANGE 13 Fuel pump relay 3 Fuel pump operates at high speed
NO. 1 INJECTOR 01 Injectors Cut fuel to No. 1 injector
NO. 2 INJECTOR 02 Cut fuel to No. 2 injector
NO. 3 INJECTOR 03 Cut fuel to No. 3 injector
NO. 4 INJECTOR 04 Cut fuel to No. 4 injector
RADIAT. FAN LO 21 Fan control module Drives the fan motor
TC
TURBOCHARGER
WASTEGATE
12 Turbocharger wastegate solenoid Solenoid valve turns from OFF to
ON
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