Isuzu KB P190. Manual - part 1395

A new cruise control system has been introduced due to changes in the powertrain architecture and components. There
is no longer a cruise control module; instead the management has been taken over by the engine control module (ECM).

To the user, the system operates as previously, with all controls from the cruise control switch assembly and the cruise
control messages presented by the instrument cluster. For vehicles fitted with the HFV6 engine refer to 1.3 System
Operation .

The cruise control system now has an
additional fail-safe feature. The brake pedal
must be pressed in the ignition cycle for the
cruise control to be engaged. The cruise
control will not engage until this is done.

1.1

WARNINGS, CAUTIONS and NOTES

This Section contains various WARNINGS, CAUTIONS and NOTE statements that you must observe carefully to reduce
the risk of death or injury during service, repair procedures or vehicle operation. Incorrect service or repair procedures
may damage the vehicle or cause operational faults. WARNINGS, CAUTION and NOTE statements are not exhaustive.
GM HOLDEN LTD can not possibly warn of all the potentially hazardous consequences of failure to follow these
instructions.

Definition of WARNING, CAUTION and NOTE Statements

Diagnosis and repair procedures in this Section contain both general and specific WARNING, CAUTION and NOTE
statements. GM HOLDEN LTD is dedicated to the presentation of service information that helps the technician to
diagnose and repair the systems necessary for proper operation of the vehicle. Certain procedures may present a hazard
to the technician if they are not followed in the recommended manner. WARNING, CAUTION and NOTE statements are
designed to help prevent these hazards from occurring, but not all hazards can be foreseen.

WARNING Defined

A WARNING statement immediately precedes an operating procedure or maintenance practice which, if not correctly
followed, could result in death or injury. A WARNING statement alerts you to take necessary action or not to take a
prohibited action. If a WARNING statement is ignored, the following consequences may occur:

•

Death or injury to the technician or other personnel working on the vehicle,

•

Death or injury to other people in or near the workplace area, and / or

•

Death or injury to the driver / or passenger(s) of the vehicle or other people, if the vehicle has been improperly
repaired.

CAUTION Defined

A CAUTION statement immediately precedes an operating procedure or maintenance practice which, if not correctly
followed, could result in damage to or destruction of equipment, or corruption of data. If a CAUTION statement is ignored,
the following consequences may occur:

•

Damage to the vehicle,

•

Unnecessary vehicle repairs or component replacement,

•

Faulty operation or performance of any system or component being repaired,

•

Damage to any system or components which depend on the proper operation of the system or component being
repaired,

•

Faulty operation or performance of any systems or components which depend on the proper operation or
performance of the system or component under repair,

•

Damage to fasteners, basic tools or special tools and / or

•

Leakage of coolant, lubricant or other vital fluids.

Cruise Control – HFV6

Page 8C–4

NOTE Defined

A NOTE statement immediately precedes or follows an operating procedure, maintenance practice or condition that
requires highlighting. A NOTE statement also emphasises necessary characteristics of a diagnostic or repair procedure.
A NOTE statement is designed to:

•

Clarify a procedure,

•

Present additional information for accomplishing a procedure,

•

Give insight into the reasons for performing a procedure in the recommended manner, and / or

•

Present information that gives the technician the benefit of past experience in accomplishing a procedure with
greater ease.

1.2

System Components

The main components of the electronic cruise control system are:

•

cruise control ON / OFF switch (in dash panel).

•

cruise control switch assembly (incorporated into wiper and washer switch assembly),

•

instrument cluster assembly (cruise set lamp),

•

clutch pedal switch assembly (manual transmission vehicles only),

•

stop lamp switch assembly,

•

powertrain interface module (PIM),

•

engine control module (ECM),

•

throttle actuator control (TAC) assembly, and

•

electrical wiring (incorporated into the main wiring harness).

Figure 8C – 1

Cruise Control – HFV6

Page 8C–5

Legend

Engine Control Module

Throttle Actuator Control (TAC) Assembly

Cruise Control Switch Assembly

Instrument Cluster Assembly

Cruise Control ON / OFF Switch

Powertrain Interface Module

Clutch Pedal Switch Assembly (Manual Only)

Stop Lamp Switch Assembly

Cruise Control Switch Assembly

The cruise control switch assembly is located on the end of
the wiper and washer switch assembly.

•

For harness routing from the cruise control switch
assembly to the powertrain interface module, refer to
8A Electrical – Body and Chassis.

•

For wiring and to see how the switch integrates into
the system, refer to 2.3

Wiring Diagrams.

Figure 8C – 2

Instrument Cluster Assembly

The instrument cluster assembly displays the status of the cruise control system as well as other information via the
warning indicators.

Figure 8C – 3

Clutch Pedal Switch (Manual Only)

This switch assembly is attached to the clutch pedal support bracket. The switch is normally closed when the clutch
pedal is at rest, opening when the pedal is pressed. Activation of this switch removes the signal to the ECM, which will
then deactivate the cruise control.

Stop Lamp Switch Assembly

The stop lamp switch assembly is located on the brake pedal support bracket. This switch has two sets of contacts with
two independent functions. The function of the switch assembly in the cruise control system is to deactivate the cruise
control when the brake pedal is pressed as well as an initial safety check of the switch operation prior to activating cruise
control.

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