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6-32 ENGINE GENERAL INFORMATION AND DIAGNOSIS
SCAN TOOL DATA
✱ THROTTLE POS
(ABSOLUTE THROTTLE
POSITION)
✱ O2S B1 S1
(HEATED OXYGEN SEN-
SOR-1)
∆ ✱ O2S B1 S2
(HEATED OXYGEN SEN-
SOR-2)
∆ ✱ O2S FT B1 S1
∆ ✱ DIS. WITH MIL ON
DESIRED IDLE
(DESIRED IDLE SPEED)
TP SENSOR VOLT
(THROTTLE POSITION
SENSOR OUTPUT VOLT-
AGE)
INJ PULSE WIDTH
(FUEL INJECTION PULSE
WIDTH)
IAC FLOW DUTY
(IDLE AIR CONTROL
FLOW DUTY)
TOTAL FUEL TRIM
BATTERY VOLTAGE
CANIST PRG DUTY
(EVAP CANISTER PURGE
FLOW DUTY)
CLOSED THROT POS
(CLOSED THROTTLE
POSITION)
FUEL CUT
RADIATOR FAN
(RADIATOR FAN CON-
TROL RELAY)
ELECTRIC LOAD
A/C SWITCH
VEHICLE CONDITION
Ignition switch
Throttle valve fully closed
ON/engine
Throttle valve fully open
stopped
At specified idle speed after warming up
When engine is running at 2000 r/min. for 3
min or longer after warming up.
At specified idle speed after warning up
–
At idling with no load after warming up, M/T
at neutral, A/T at "P" range
Ignition switch
Throttle valve fully closed
ON/engine
Throttle valve fully open
stopped
At specified idle speed with no load after
warming up
At 2500 r/min with no load after warming up
At idling with no load after warming up
At specified idle speed after warming up
Ignition switch ON/engine stop
–
Throttle valve at idle position
Throttle valve opens larger than idle posi-
tion
When engine is at fuel cut condition
Other than fuel cut condition
Ignition switch
Engine coolant temp. :
ON
Lower than 95°C (203°F)
Engine coolant temp. :
97.5°C (208°F) or higher
Ignition switch ON/Headlight, small light
and rear window defogger all turned OFF
Ignition switch ON/Headlight, small light or
rear window defogger turned ON
Engine running after warming up, A/C not
operating
Engine running after warming up, A/C oper-
ating
NORMAL CONDITION/
REFERENCE VALUES
7 – 18%
70 – 90%
0.01 – 0.95 V
0.01 – 0.95 V
– 20 – +20%
–
M/T
700 r/min
A/T
750 r/min
More than 0.2 V
Less than 4.8 V
2.0 – 3.6 msec.
2.0 – 3.6 msec.
5 – 25%
– 35 – +35%
12 – 14 V
0 – 100%
ON
OFF
ON
OFF
OFF
ON
OFF
ON
OFF
ON
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