
MWI
COMBINATION METER
MWI-37
< ECU DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
MB A
O
P
11 LG Brake fluid level switch ONBrake fluid level low 0
Brake fluid level normal Battery voltage
16 VSteering switch (trip comput-
er) signalONPress the steering switch (trip
computer)0
Other than the above 5
19 V Ambient sensor signal ON —
20 BR Ambient sensor ground ON — 0
21
BGround — — 0 22
23
24 V Fuel level sensor ground (-) ON — 0
25 RAuto A/C sense signal (with
auto A/C)ON — 5V
27 G Battery power supply OFF — Battery voltage
28 SB Ignition switch ON or START ON — Battery voltage
30 G Stop lamp switch ONBrake pedal depressed Battery voltage
Brake pedal released 0
31 V A/T N-range input (with A/T) ONTransmission gear selector lever
in N positionBattery voltage
Transmission gear selector lever
other than N position0
32 W A/T P-range input (with A/T) ONTransmission gear selector lever
in P positionBattery voltage
Transmission gear selector lever
other than P position0
33 Y A/T PN output (with A/T) ONTransmission gear selector lever
in P or N position0
Transmission gear selector lever
other than P or N positionBattery voltage
35 BREngine coolant temperature
signal outputONAt idle [after warming up, approx.
80°C (176°F)]
NOTE:
The waveforms vary depending
on engine coolant temperature. Te r -
mi-
nal
No.Wire
colorItemCondition
Reference value (V)
(Approx.) Ignition
switchOperation or condition
JSNIA0014GB
SKIB3651J

TM-3
C
E
F
G
H
I
J
K
L
MA
B
TM
N
O
P
DTC TURBINE REVOLUTION SENSOR .........104
Description ............................................................104
CONSULT-III Reference Value in Data Monitor
Mode .....................................................................
104
On Board Diagnosis Logic ....................................104
Possible Cause .....................................................104
DTC Confirmation Procedure ................................104
Diagnosis Procedure .............................................104
CONTROL UNIT (RAM), CONTROL UNIT
(ROM) ...............................................................
108
Description ............................................................108
On Board Diagnosis Logic ....................................108
Possible Cause .....................................................108
DTC Confirmation Procedure ................................108
Diagnosis Procedure .............................................108
MAIN POWER SUPPLY AND GROUND CIR-
CUIT ..................................................................
109
Description ............................................................109
On Board Diagnosis Logic ....................................109
Possible Cause .....................................................109
DTC Confirmation Procedure ................................109
Diagnosis Procedure .............................................109
PNP, OD SWITCH AND CLOSED THROT-
TLE, WIDE OPEN THROTTLE POSITION
SIGNAL CIRCUIT .............................................
111
CONSULT-III Reference Value in Data Monitor
Mode .....................................................................
111
TCM Terminal and Reference Value .....................111
Diagnosis Procedure .............................................111
Component Inspection ..........................................115
A/T SHIFT LOCK SYSTEM ..............................116
Wiring Diagram - A/T Shift Lock System - .............116
Terminals And Reference Values .........................116
Diagnosis Procedure .............................................117
ECU DIAGNOSIS .......................................119
TCM ..................................................................119
Reference Value ...................................................119
Wiring Diagram - A/T CONTROL SYSTEM - ........123
Fail-Safe ................................................................123
DTC Inspection Priority Chart ...............................125
DTC Index .............................................................125
DTC Alphabetical Index ........................................126
SYMPTOM DIAGNOSIS ............................127
SYSTEM SYMPTOM ........................................127
Symptom Chart .....................................................127
OD OFF Indicator Lamp Does Not Come On .......138
Engine Cannot Be Started in "P" and "N" Position ..140
In "P" Position, Vehicle Moves Forward or Back-
ward When Pushed ...............................................
140
In "N" Position, Vehicle Moves ..............................141
Large Shock "N" → "R" Position ...........................142
Vehicle Does Not Creep Backward in "R" Position ..142
Vehicle Does Not Creep Forward in "D", "2" or "1"
Position ..................................................................
144
Vehicle Cannot Be Started from D1 .......................145
A/T Does Not Shift: D1→ D2or Does Not Kick-
down: D
4→ D2 .......................................................146
A/T Does Not Shift: D2→ D3 ..................................148
A/T Does Not Shift: D3→ D4 ..................................149
A/T Does Not Perform Lock-up .............................151
A/T Does Not Hold Lock-up Condition ...................151
Lock-up Is Not Released .......................................152
Engine Speed Does Not Return to Idle (Light
Braking D
4→ D3) ...................................................153
A/T Does Not Shift: D4→ D3, When OD OFF ........154
A/T Does Not Shift: D3→ 22, When Selector Lever
"D" → "2" Position .................................................
155
A/T Does Not Shift: 22→ 11, When Selector Lever
"2" → "1" Position ..................................................
156
Vehicle Does Not Decelerate by Engine Brake .....158
TCM Self-Diagnosis Does Not Activate .................161
PRECAUTION ............................................163
PRECAUTIONS ...............................................163
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...............................................................
163
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect .................................
163
Precaution for On Board Diagnosis (OBD) System
of A/T and Engine (For Type1 Only) ......................
163
Precaution .............................................................164
Service Notice or Precaution .................................165
Wiring Diagram and Trouble Diagnosis .................165
PREPARATION .........................................166
PREPARATION ...............................................166
Special Service Tool ..............................................166
Commercial Service Tool ......................................169
ON-VEHICLE MAINTENANCE ..................171
A/T FLUID .......................................................171
Checking A/T Fluid ................................................171
Changing A/T Fluid ................................................171
A/T Fluid Cooler Cleaning .....................................172
STALL TEST ...................................................175
Inspection and Judgment ......................................175
LINE PRESSURE TEST ..................................178
Inspection and Judgment ......................................178
ROAD TEST ....................................................180
Description .............................................................180
Check Before Engine Is Started ............................180
Check at Idle ..........................................................181
Cruise Test - Part 1 ...............................................183
Cruise Test - Part 2 ...............................................185
Cruise Test - Part 3 ...............................................186
Vehicle Speed When Shifting Gears .....................188

WCS-38
< ECU DIAGNOSIS >
COMBINATION METER
11 LG Brake fluid level switch ONBrake fluid level low 0
Brake fluid level normal Battery voltage
16 VSteering switch (trip comput-
er) signalONPress the steering switch (trip
computer)0
Other than the above 5
19 V Ambient sensor signal ON —
20 BR Ambient sensor ground ON — 0
21
BGround — — 0 22
23
24 V Fuel level sensor ground (-) ON — 0
25 RAuto A/C sense signal (with
auto A/C)ON — 5V
27 G Battery power supply OFF — Battery voltage
28 SB Ignition switch ON or START ON — Battery voltage
30 G Stop lamp switch ONBrake pedal depressed Battery voltage
Brake pedal released 0
31 V A/T N-range input (with A/T) ONTransmission gear selector lever
in N positionBattery voltage
Transmission gear selector lever
other than N position0
32 W A/T P-range input (with A/T) ONTransmission gear selector lever
in P positionBattery voltage
Transmission gear selector lever
other than P position0
33 Y A/T PN output (with A/T) ONTransmission gear selector lever
in P or N position0
Transmission gear selector lever
other than P or N positionBattery voltage
35 BREngine coolant temperature
signal outputONAt idle [after warming up, approx.
80°C (176°F)]
NOTE:
The waveforms vary depending
on engine coolant temperature. Te r -
mi-
nal
No.Wire
colorItemCondition
Reference value (V)
(Approx.) Ignition
switchOperation or condition
JSNIA0014GB
SKIB3651J