1995 ISUZU TROOPER Workshop Manual

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CRUISE CONTROL 9B-1
SECTION 98
CRUISE CONTROL
CONTENTS
General description ................................ .
Parts location .......................................... .
Circuit diagram ....................................... .
Diagnosis ................................................. .
On-vehicle service ................................. ..
Brake switch adjustment ................ ..
Clutch switch adjustment ................ .
Actuator
cable adjustment .............. .
Starter switch ................................... .
Cruise control main switch .............. .
GENERAL DESCRIPTION
98-1
9B-3
98-4
9B-7
98-28
9B-28
9B-28
9B-28
9B-28
9B-30 Cruise
control
switch
(combination switch) ........................ 98-31
Cruise control unit .......................... ... 9B-32
Pump
& actuator .................. .............. 9B-34
Brake switch ....................................... 9B-36
Clutch switch .............................. ....... 9B-36
Mode switch .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 9B-37
Vehicle speed sensor
(incorporated in speedometer) ......... 9B-38
Diode
.. .. .. .. .. .. . .. .. .. .. .. . .. .. .. .. .. .. .. .. .. .. . .. .. .. 9B-38
Cruise control main relay .................. 9B-39
The circuit consists of the starter switch, cruise control main switch, cruise control switch, cruise control unit,
pump &actuator, brake switch, clutch switch (M/T), mode switch (A/T), vehicle speed sensor (incorporated into
the speedometer) and indicator light.
The cruise control keeps
the vehicle running at a fixed speed until a signal canceling this fixed speed is received.
When the main switch "AUTO CRUISE" is turned on with the vehicle in the running mode, the battery voltage
is applied
to the control unit. When a signal from the control switch is input to the control unit while the vehicle
is in this state, the cruise control actuator is activated to operate the system .
.._, Also, while the system is operating, the "AUTO CRUISE" indicator light in the indicator box lights up.
1. SET /COAST SWITCH FUNCTION
1) SET function: When the SET/COAST switch
is pressed and released
with the main switch
on, the speed at
which the vehicle is running
at that moment is stored in the memory, and
the vehicle
automatically runs at the speed
stored.
2) COAST-DOWN function: When the SET/
COAST switch is kept on while the vehicle in
running, the vehicle decelerates
during that
time. The speed at which vehicle is running
when the control switch is turned off is stored
in the
memory, and the vehicle automatically
returns
to the stored speed.
3) Tap-down function: When the SET/COAST
switch is turned on and off instantaneously
while the vehicle is running, the vehicle decel­
erates a mile for each on/off operation. The
vehicle speed at
which the vehicle was run­
ning when the SET/COAST was turned off last
is stored in the
memory, and the vehicle auto­
matically returns to this stored speed.
2. RESUME/ ACCEL SWITCH FUNC­
TION
1) Resume function: When the RESUME/
ACCEL switch is turned
on/off after the system
is
temporarily deactivated by pressing the
brake or clutch pedal while the vehicle is
running,
the vehicle resumes. The speed
stored before the system
was released.
2) Accelerate function: When the RESUME/
ACCEL switch is kept on after the system is
released completely, the vehicle accelerates
its speed
during that time. The vehicle speed
at
which the vehicle was running when the
switch
was turned off is stored in the memory,
and the vehicle automatically returns to this
speed.
3) Tap-up function: When the RESU ME/ACCEL
switch is
turned on and off instantaneously
while the vehicle is running, the vehicle decel­
erates a mile for each on/off operation. The
vehicle speed at
which the vehicle was run­
ning when the switch was turned off last is
stored in the
memory, and the vehicle auto­
matically returns to this stored speed.

98-2 CRUISE CONTROL
3. CANCEL FUNCTION
1) Temporary cancellation:
• When the brake pedal is pressed.
• When the clutch pedal is pressed. (Mfn
• When the select lever is shifted to any
position other than
"D", "3", "2" or "L".
(AfT')
• When the cancel switch is operated.
• When the vehicle speed exceeds about
12.5mph over the vehicle speed stored in
the memory.
• Turning the RESUME/ACCEL switch will
return the vehicle to the speed stored in
the cruise control memory.
2) Complete cancellation:
• When the starter switch or the main switch
is turned off.
• When the fail-safe function is activated.
• When the vehicle speed is about 24mph.
Ill

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