Page 489 of 2103
ENGINE (NON-TURBO)> Troubleshooting
INSPECTION PROCEDURE 42
Check the heated oxygen sensor (front) circuit.
Measure at the heated (front) connector lDisconnect the connector and measure at the harness side.
l Continuity between 2 and ground
OK: Continuity
NG Check the following connector:
OK
Check trouble symptom.
NG Replace
OK
Check the harness wire between the PCM and heated o xygen
sensor (front) connector. Repair, if
Check the following connector:
OK
NG
Check trouble symptom.
NG NG
Check the harness wire between the PCM and the heat ed oxygen Repair
sensor (front) connector.
OK
Replace the PCM.
INSPECTION PROCEDURE 43
Check the throttle position sensor circuit.
Check the following connectors:
Check the harness wire between the PCM and position
Check the following connector:
OK
Check trouble symptom.
OK
Replace the PCM.Repair
N G
Check the harness wire between the PCM and position
sensor connector. Repair, if necessary. . .
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Page 490 of 2103

ENGINE (NON-TURBO)>
INSPECTION PROCEDURE 44
Check the vehicle-speed sensor and speedometer.
Measure at the speed sensor connector l Disconnect the connector and measure at the harness side.
l Voltage between 1 and ground (Ignition switch: ON)
OK: 8.5-9.5
l Continuity between 2 and ground
OK: Continuity
OK
C h e c k t h e
Check the harness wire PCM and the speed connector. Repair, if necessary.
Check the followina connector: NG Repair
OK
Check trouble symptom.
NG
NG
Check the harness wire between the PCM and the spee d sensor Repairconnector.
SCAN TOOL SENSOR (Data list)65 Vehicle speed
l Is actual vehicle soeed indicated durina drivina?I
No
Check the speedometer circuit.
(Refer to INSPECTION PROCEDURE 45.)I
OK
Replace the vehicle speed sensor.
T S B R e v i s i o n
SCAN TOOL SENSOR READ TESTS (Data list)
65 Vehicle speed
l
Is actual vehicle speed indicated during driving?
No
Yes Replace the PCM.
. . .
NG I):
Repair. .
. -
Check trouble symptom. , .
NGCheck the harness wire between the PCM and the tran saxle control Repairmodule connector.
OK
INSPECTIONPROCEDURE 45.)
OK
Check the automatic transaxle control system.
Page 491 of 2103
ENGINE (NON-TURBO)> Troubleshooting
INSPECTION PROCEDURE 45Check the speedometer.
A-l A-l 07,
OK
Check trouble symptom.
NG
Check the harness wire between the PCM and the comb ination
meter. Repair, if necessary.
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Page 492 of 2103

ENGINE (NON-TURBO)> Troubleshooting
SENSOR READ TESTS (DATA LIST) REFERENCE TABLE
Caution
1. When shifting the select lever to range, the brakes should be applied so that the
does not move forward.
2. When checking while driving the vehicle, always be sure to have two
vehicle.
Inspection
No.itemInspection contents
Normal conditionp r o c e d u r e
N o .
Engine: WarmWhen at 4000 Air/fuel mixture
engine is suddenly 200 or less
made leaner
decelerated.when
decelerating, and
sensor is made richer
When engine is 1,000
voltswhen racing.
suddenly raced.
(Heated
oxygenEngine: Warm
The heatedsensoroxygen sensor Engine: Idlefront)signal is used to
400 or less to
check the air/fuel
1,000
mixture ratio, and (Changes)
control condition is also checked Engine: 2000
by the PCM.
When engine coolant
t e m p e r a t u r e i s
When engine coolant
t e m p e r a t u r e i s
Engine
coolantIgnition switch: ON When engine coolant
or with engine run- temperature is
ture sensorning
When engine coolant
t e m p e r a t u r e i s
When engine coolant
t e m p e r a t u r e i s
Throttle Set to idle position.
400 or more
position Ignition switch: ON
Open fully 3,800
or less
Minimum
throttle Engine: Idle (more than one minute) 1,000
KnockCode
sor voltsEngine: Idle Sudden racingvoltage increases
temporarily.
0Battery
voltage Ignition switch: ON
101
1
Altitude: Om (0 ft.)
reading
Ignition switch: ON (30Altitude:
(3937 ft.)88 (26
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ENGINE (NON-TURBO)>
I n s p e c t i o n
itemNo.Inspection contentsNormalconditionp r o c e d u r e
No.
12position
l Engine: IdlelA/C switch: OFF ON(A/C compressor activated) Step value
increases.
14
15
17
Adaptivel Engine: Warm, 2,500 Increases
fuel factor
Disconnect any injector connector. gradually
Altitude: Om (0 ft.) 101Barometric
Ignition switch: ON (30
pressureAltitude:
0 8
(3,937 ft.)
88 (26
C o d eEngine
speedEngine: Warm, idle 100
When intake air tem-
p e r a t u r e i s
When intake air tern-
perature is
When intake air
Intake airIgnition switch: ON
e n g i n e r u n - is
temperature
When intake air tem-
peratureis
36
Charging
system
goal
When intake air tem-
peratureis
Code No.
Engine: 2,500 Indicates battery
voltage
Roughly
Batterys a m e t e m p e r a -
temperature Ignition switch: ON
ture as the
battery area
Engine coolant tem-
perature: Less than OPEN-LOOP
Fuel control
status Engine: 2,500 Engine coolant tem-
.
perature: More than CLOSED-LOOP
sensor
volts
(Heated
oxygen
sensor
rear)
l Transaxle: gear Engine: 3,500 or 000 range l Drive with more
open throttle
Actual vehicle
Vehicle
speedDrive at a constant speed. speed the
s p e e d o m e t e r a r e .
the same.
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ENGINE (NON-TURBO)> Troubleshooting
,
p a g eNo.
66
39
71
inspection
No.
Procedure
Inspection
itemInspection contentsNormal condition
Engine: Warm
Air/fuel mixture
made leaner
whenWhen at 4,000
engine is suddenly
decelerated.L e a n
sensor
state
(Heated
oxygen
sensor
-front)
decelerating,and
is made richer When engine is
when racing. suddenly raced.
Engine: Warm
The heated
oxygensensorEngine: Idle
signal is used to
check the air/fuel
Rich
Lean Center
(Changes)mixture ratio. and
control condition is also checked Engine: 2,000
by the PCM.
MAPl
Engine: Warm, idleThe same
lUse a vacuum gauge to measure the indication as the
reading plenum vacuum.vacuum gauge Procedure
Procedure
Total spark
advance
Engine: Warm, idle
Approx.
sensor
state
(Heated
oxygen
sensor
rear)
l Transaxle: gear range l Drive with open throttle Engine: 3,500
or‘4more
Code No.
No.
or
Fuel level
sensor‘8
Fuel level
Fuel tank: Full
Fuel tank: Empty
‘9
Code
Long terml
Engine: Warm, 2,500 Increases
fuel trimDisconnect any injector connector. gradually
Engine: Warm, 2,500
Short termlDisconnect any injector connector. Increases and returns
fuel trimto the original
state.
Idle
Calculated
load valueEngine: Warm M/T
2,5006-12
9-14
General Scan Tool (GST) mode
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Page 495 of 2103
ENGINE
INPUT STATE TESTS (DATA LIST) REFERENCE TABLE
Item Inspection
No.itemInspection contentsN o r m a l c o n d i t i o n p r o c e d u r e
No.
A l
Power
steering
switch
switch
When steering wheel
is stationaryOFF
Engine: Warm, idle
When steering wheelONis turned,
Transaxle: or
rangeIgnition switch: ON
Other than
or range
BrakeDepress the brake pedalON
switch Do not depress the brake pedal.
(ASD)
voltage OFF
senseIgnition switch: ON
relay (ASD
C o d e N o .
relay)
erationON’checking Engine: Cranking or idle
voltage]
voltage Ignition switch: OFF
OFF
sense
(Ignition
switchSTART, ON voltage)Ignition switch: ON/START
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Page 496 of 2103

ENGINE (NON-TURBO)> , ,
OUTPUT STATE TESTS (DATA LIST) REFERENCE TABLE
Item Inspection
No. itemInspection contentsNormal condition ,
No.
TorqueWhen running at constant speed
reduction,
linkWhen shiftingUP, DOWN
A/C switch: OFFOFF
A/C clutch
relayEngine: IdleA/C switch: ON (A/C ON
compressor activated)
relayIgnition switch: ON
OFF
Engine: Cranking or idle
Engine: WarmRight after starting en-
gine
tive purge
solenoid
Engine: Warm1 0 s e c o n d s o r m o r e
after starting engine
Engine: Warm, idleON
E G R s o l e -OFFSlight racing (Engine: 2,000 or more)( m o m e n t a r i l y ). ..
Radiator fan: Not activated [Engine coolant
Radiator temperature: Less than approx. (176” F)]
fan lowRadiator operates at low speed [Engine coolantspeed relaye m p e r a t u r e i s or less, A/C ON
switch: ON]
Radiator fan: Not activated [Engine OFF
Radiatortemperature: Less than approx.
fan high
speed relay Radiator operates at high speed.
ngine coolant temperature is (220” F)ON
or more, A/C switch: ON]
Fuel pumpIgnition switch: ON
OFF
relayEngine: Cranking or idleON
(CheckIgnition switch: OFF ON
ON OFF
engine)(Everything is OK and DTC is not memorized) (Severa l minutes
lamp later)
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