C: CHECK CRUISE CONTROL MAIN SWITCH
DIAGNOSIS:
Faulty cruise control main switch, or open harness.
TROUBLE SYMPTOM:
Cruise control main switch is not turned ON and cruise
control cannot be set.
NOTE:
When the main relay (built-in cruise control module)
operates, the main switch circuit is in normal condition.
The main relay operation can be checked by hearing the
operation sounds.
This operation sounds will be heard when ignition switch
and cruise control main switch is turned to ON.
1. Check fuse and power supply.
OK
Not OK
Melted fuse,repair the shorted part of the circuit.
,replace fuse.
2. Check cruise control main switch.
OK
Not OK
Open harness,repair faulty main switch.,
replace.
3. Check harness connector between cruise
control main switch and cruise control
module.
OK
Not OK
Repair or replace wiring harness.
Failure of the cruise control module.
B6M0275
14
6-2BODY ELECTRICAL SYSTEM
7. Diagnostics Chart for Power Line
G6M0181
1. CHECK FUSE AND POWER SUPPLY.
1) Check fuse No. 18.
2) Turn ignition switch to ON.
3) Measure voltage between fuse box connector and body.
Connector & terminal / Specified voltage:
(B51) No. 4—Body / 10 V, or more
B6M0183B
2. CHECK CRUISE CONTROL MAIN SWITCH.
1) Turn ignition switch to OFF.
2) Remove cruise control main switch and disconnect con-
nector.
3) Turn ignition switch to ON.
4) Measure voltage between cruise control main switch
connector and body.
Connector & terminal / Specified voltage:
(i19) No. 3—Body / 10 V, or more
G6M0244
5) Measure resistance between cruise control main switch
terminals.
Terminals / Specified resistance:
No. 3—No. 5 / 10Ω, max. (ON)
1MΩ, min. (OFF)
B6M0184B
3. CHECK HARNESS CONNECTOR BETWEEN
CRUISE CONTROL MAIN SWITCH AND CRUISE
CONTROL MODULE.
1) Connect connector.
2) Turn ignition switch to ON.
3) Turn cruise control main switch to ON.
4) Measure voltage between each terminal of cruise con-
trol main switch or cruise control module and body.
Connector & terminal / Specified voltage:
(i19) No. 3—Body / 10 V, or more
(i19) No. 5—Body / 10 V, or more
(B94) No. 15—Body / 10 V, or more
NOTE:
Depress cruise control main switch with fingers while mea-
suring (i19) No. 5—Body.
15
6-2BODY ELECTRICAL SYSTEM
7. Diagnostics Chart for Power Line
