Page 3297 of 4770

DI1KT±06
I00293
C15
± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±877
111 2 Author: Date:
TERMINALS OF ECU
Symbols (Terminals No.)Wiring ColorConditionSTD Voltage (V)
STP± e GND GWWBDepress brake pedal10 ± 16 VSTP e GND
(C15±2 e C15±16)G±W e W±BRelease brake pedalBelow 1 V
DGND (C15 3C15 16)BRWBShift to positions except DBelow 1 VD e GND (C15±3 e C15±16)B±R e W±BShift to D position10 ± 16 V
PIGND (C15 4C15 16)OWB
Ignition switch ON
Cruise control main switch ONBelow 1.2 V
PI e GND (C15±4 e C15±16)O e W±BIgnition switch ON
Cruise control main switch OFF10 ± 16 V
TCGNDIgnition switch ON10 ± 16 VTC e GND
(C15±5 e C15±16)LG±R e W±BIgnition switch ON
Connect terminals Tc and E1 of diagnostic check connectorBelow 1 V
ECT e GND LBWB
During driving
Gear position 3rd10 ± 16 VECT e GND
(C15±6 e C15±16)L±B e W±BDuring driving
Gear position O/DBelow 1 V
MC e GND RBWB
During cruise control driving
COAST switch held ON9 ± 15 VMC e GND
(C15±7 e C15±16)R±B e W±BDuring cruise control driving
ACC switch held ONBelow 1 V
L e GND GBWBDuring cruise control driving9 ± 15 VL e GND
(C15±8 e C15±16)G±B e W±BExcept during cruise control drivingBelow 1 V
B e GND
(C15±9 e C15±16)B±R e W±BIgnition switch ON10 ± 16 V
Ignition switch ON10 ± 16 V
CCSGND
Ignition switch ON
CANCEL switch held ON4.2 ± 8.8 V
CCS e GND
(C15±10 e C15±16)W e W±BIgnition switch ON
SET/COAST switch held ON2.5 ± 6.3 V
Ignition switch ON
RES/ACC switch held ON0.8 ± 3.7 V
Page 3298 of 4770

DI±878
± DIAGNOSTICSCRUISE CONTROL SYSTEM
111 3 Author: Date:
Symbols (Terminals No.)Wiring ColorConditionSTD Voltage (V)
CMS e GND WLWB
Ignition switch ON
Main switch OFF10 ± 16 VCMS e GND
(C15±11 e C15±16)W±L e W±BIgnition switch ON
Main switch ONBelow 0.5 V
SPD e GND
(C15 12C15 16)V±W e W±B
Engine start
Car stoppage.Below 1.5 V or
4.7 ± 16 V
(C15±12 e C15±16)VW e WB
During driving (Pulse generated).3 ± 7 V
IDL e GND LRWB
Ignition switch ON
Throttle valve fully opened.10 ± 16 VIDL e GND
(C15±13 e C15±16)L±R e W±BIgnition switch ON
Throttle valve fully closed.Below 1.5 V
OD e GNDYBWB
During cruise control driving
OD switch ON.10 ± 16 VOD e GND
(C15±14 e C15±16)Y±B e W±BDuring cruise control driving
OD switch OFF (3rd driving)Below 1 V
MO e GND RGWB
During cruise control driving
ACC switch hold ON9 ± 15 VMO e GND
(C15±15 e C15±16)R±G e W±BDuring cruise control driving
COAST switch hold ONBelow 1 V
GND e Body Ground
(C15±16 e Body Ground)W±B e Body
GroundConstantBelow 1 V
Page 3299 of 4770

DI08L±13
± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±879
111 4 Author: Date:
PROBLEM SYMPTOMS TABLE
SymptomSuspect AreaSuspect AreaSee pageSee
page
SET not occourring or CANCEL occurring.
(DTC is Normal)
3. Main Switch Circuit
(Cruise control switch)
4. Vehicle Speed Sensor
5. Control Switch Circuit
(Cruise control switch)
6. Stop Light Switch Circuit
7. Park/Neutral Position Switch Circuit
8. Clutch Switch
9. Actuator Motor Circuit
10.Cruise Control Cable
11. Cruise Control ECU
DI±912
DI±888
DI±892
DI±898
DI±904
DI±907
DI±881
DI±918
IN±31
SET not occurring or CANCEL occurring.
(DTC dose not output)1. ECU Power Source Circuit
2. Cruise Control ECUDI±909
IN±31
Actual vehicle speed deviates above or below the set speed.
1. Cruise Control Cable
2. Vehicle Speed Signal Abnormal
3. Electronically Controlled Transmission
Communication Circuit
4. Actuator Motor Circuit
5. Idle Signal Circuit
(Main throttle position sensor)
6. Cruise Control ECUDI±918
DI±891
DI±901
DI±881
DI±895
IN±31
Gear shifting frequent between 3rd O/D when driving on uphill
road. (Hurting)1. Electronically Controlled Transmission
Communication Circuit
2. Cruise Control ECU
DI±901
IN±31
Cruise control not cancelled, even when brake pedal is de-
pressed.
1. Cruise Control Cable
2. Stop Light Switch Circuit
3. Actuator Motor Circuit
4. Cruise Control ECUDI±918
DI±898
DI±881
IN±31
Cruise control not cancelled, even when transmission is shifted to
ºNº postion.
1. Cruise Control Cable
2. Park/Neutral Position Switch Circuit
3. Actuator Motor Circuit
4. Cruise Control ECUDI±918
DI±904
DI±881
IN±31
Cruise control not cancelled, even when clutch pedal is de-
pressed.
1. Cruise Control Cable
2. Clutch Switch Circuit
3. Actuator Motor Circuit
4. Cruise Control ECUDI±918
DI±907
DI±881
IN±31
Control switch does not operate.
(SET/COAST, ACC/RES, CANCEL not possible)
1. Cruise Control Cable
2. Control Switch Circuit
3. Actuator Motor Circuit
4. Cruise Control ECUDI±918
DI±892
DI±881
IN±31
SET possible at 40 km/h (25 mph) or less, or CANCEL does not
operate at 40 km/h (25 mph) or less.
1. Cruise Control Cable
2. Vehicle Speed Signal Abnormal
3. Actuator Motor Circuit
4. Cruise Control ECUDI±918
DI±891
DI±881
IN±31
Poor response is in ACCEL and RESUME modes.
1. Cruise Control Cable
2. Electronically Controlled Transmission
Communication Circuit
3. Actuator Motor Circuit
4. Cruise Control ECUDI±918
DI±901
DI±881
IN±31
O/D does not resume, even though the road is not uphill.
1. Electronically Controlled Transmission
Communication Circuit
2. Cruise Control ECU
DI±901
IN±31
Page 3300 of 4770
DI±880
± DIAGNOSTICSCRUISE CONTROL SYSTEM
111 5 Author: Date:
DTC memory is erased.1. Cruise Control ECUIN±31
DTC is not output, or is output when should not be.1. Diagnosis Circuit
2. Cruise Control ECUDI±916
IN±31
Cruise MAIN indicator light remains ON or falls to light up.1. Cruise MAIN Indicator Light Switch CircuitDI±914
Page 3301 of 4770
DI08M±12
Duty Ratio =A + BA
x 100 (%)
ON
OFFA
B
1 cycle
I00280
Cruise Control ECU
MC 7
MO R±B Cruise Control Actuator
Actuator Motor
R±G 1 2
15
C15 C15
± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±881
111 6 Author: Date:
CIRCUIT INSPECTION
DTC 11, 15 Actuator Motor Circuit
CIRCUIT DESCRIPTION
The actuator motor is operated by signals from the ECU. Acceleration and deceleration signals are trans-
mitted according to changes in the Duty Ratio (See below).
Duty Ratio
The duty ratio is the ratio of the period of continuity in one cycle. For example, if A is the period of continuity
in one cycle, and B is the period of non±continuity.
DTC No.Detection ItemTrouble Area
11Short in actuator motor circuit.
Actuator motor
Harness or connector between cruise control ECU and
actuator motor
Cruise control ECU
15Open in actuator motor circuit.Actuator motor
WIRING DIAGRAM
Page 3302 of 4770
I00004
I00151
ON
2
1
DI±882
± DIAGNOSTICSCRUISE CONTROL SYSTEM
111 7 Author: Date:
INSPECTION PROCEDURE
1 Check resistance between terminals MO and MC of actuator motor.
PREPARATION:
(a) Turn ignition switch ON.
(b) Disconnect the actuator connector.
CHECK:
Measure resistance between terminals 1 and 2.
HINT:
If control plate is in fully opened or fully closed positions, resis-
tance can not be measured.
OK:
Resistance: more than 4.2 W
NG Replace cruise control actuator.
OK
2 Check for open and short in harness and connectors between cruise control
ECU and actuator motor (See page IN±31).
NG Repair or replace harness or connector.
OK
Check and replace cruise control ECU.
(See page IN±31).
Page 3303 of 4770

I00281
Cruise Control ECU
C15
G±B
2 1 34W±B
3
STOP Fuse8 Stop Light Switch
4
R±Y
Stop Lights Cruise Control Actuator
Actuator Magnetic Clutch
J7
J7AAJ/C
W±B
1J
1J
W±B
A
J/C
IG 8
7
J11Instrument
Panel J/BL
± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±883
111 8 Author: Date:
DTC 12 Actuator Magnetic Clutch Circuit
CIRCUIT DESCRIPTION
This circuit turns on the magnetic clutch inside the actuator during cruise control operation according to the
signal from the ECU. If a malfunction occurs in the actuator or speed sensor, etc. during cruise control opera-
tion, the rotor shaft between the motor and control plate is released.
When the brake pedal is depressed, the stop light switch turns on, supplying electrical power to the stop light.
Power supply to the magnetic clutch is mechanically cut and the magnetic clutch is turned OFF.
When driving downhill, if the vehicle speed exceeds the set speed by 15 km/h (9 mph), the ECU turns the
safety magnet clutch OFF. If the vehicle speed later drops to within 10 km/h (6 mph), cruise control at the
set speed is resumed.
DTC No.Detection ItemTrouble Area
12Short in actuator magnetic clutch circuit.
Open (0.8 sec.) in actuator magnetic clutch circuit.
STOP Fuse
Stop light switch
Actuator magnetic clutch
Harness or connector between cruise control ECU and
actuator magnetic clutch, actuator magnetic clutch and body
ground
Cruise control ECU
WIRING DIAGRAM
DI08N±12
Page 3304 of 4770
I00157
Instrument panel junction block No.1:
STOP Fuse
I00133
21
43
DI±884
± DIAGNOSTICSCRUISE CONTROL SYSTEM
111 9 Author: Date:
INSPECTION PROCEDURE
1 Check STOP fuse.
PREPARATION:
(a) Turn ignition switch OFF.
(b) Remove the STOP fuse from instrument panel junction
block No.1.
CHECK:
Check fuse continuity.
OK:
There is continuity.
NG Replace STOP fuse.
OK
2 Check stop light switch.
PREPARATION:
Disconnect the stop light switch connector.
CHECK:
Check continuity between terminals.
Switch positionContinuity
Switch pin free
(Brake pedal depressed)1 ± 2
Switch pin pushed in
(Brake pedal released)3 ± 4
NG Replace stop light switch.
OK