Isuzu KB P190. Manual — part 1400

Cruise Control – HFV6

Page 8C–22

3.3 Stop Lamp Switch Assembly

Remove

1

Press the connector locking tab while pulling on the
stop lamp connector (1) and remove from the switch
assembly (2).

2

Twist the stop lamp switch assembly (2) anticlockwise
a quarter of a turn and pull out of the brake pedal
support bracket.

3

If required, remove the plastic clip (3) by pressing the
locking tabs on the rear of the clip and pulling from the
brake pedal support bracket.

Figure 8C – 10

Test

Terminal Testing

1

Using a multimeter, probe the pins of the switch
assembly and compare to the table below.

N O T E

The pins are as follows:

• C44 – pins 1 and 2

• C44 – pins 3 and 4

N O T E

Holding the plunger (5) with tape will help when
performing the test with the plunger in the active
position (plunger pressed).

Figure 8C – 11

Plunger Position

Connector C44 – 1 and 2

Connector C44 – 3 and 4

Neutral position (plunger extended)

Open circuit

Continuity

Active position (plunger pressed)

Continuity

Open circuit

Reinstall

1

If removed, install the plastic clip (2) with the arrow pointing upwards, refer to Figure 8C – 11.

2

With the connectors pointing upwards (12 o’clock position), insert the switch assembly (1) into the plastic clip.

3

Ensure the brake pedal is in the rest position.

Cruise Control – HFV6

Page 8C–23

4

Push the switch assembly (1) so the plunger is
pressed and the end switch barrel is against the brake
pedal (2).

5

Twist the switch assembly clockwise to lock into place.
The distance between the brake pedal and the switch
barrel should be 0.7 ± 0.5 mm.

6

Install the wiring connector to the switch assembly.

Figure 8C – 12

Cruise Control – HFV6

Page 8C–24

3.4

Clutch Pedal Switch (Manual Only)

Remove

1

Disconnect the electrical connector (1) from the clutch
switch (2).

2

Loosen the lock nut (3) and remove the clutch switch
from the pedal bracket.

Figure 8C – 13

Test

1

Using a multimeter set to measure ohms, probe the
pins (1) of the switch assembly.

2

In the neutral position (plunger extended) there should
be an open circuit across the switch.

3

In the active position (plunger extended) there should
be a closed circuit across the switch.

4

Replace the switch as per the following reinstall
procedure if the tests prove the switch to be faulty.

5

If the test proves the switch to be serviceable,
reinstall it as per the following procedure.

Figure 8C – 14

Cruise Control – HFV6

Page 8C–25

Reinstall

6

Install the clutch switch (1) as follows:

a

Insert the switch into the clutch pedal bracket.

b

Rotate the switch clockwise until obtaining the
clearance (2) between the pedal (3) and the
pedal stoper.

Clutch pedal and pedal stoper
clearance specification. . . . . . . ... 0.5 – 1.5 mm

c

Tighten the lock nut (4) to the correct torque
specification.

Clutch switch lock nut
torque specification . . . . . . . . . . . 31.0 Nm

d

Recheck the clutch switch clearance, readjust
clearance if required.

N O T E

No adjustment is required for the clutch switch
itself.

Figure 8C – 15

7

Reconnect the electrical connector to the clutch switch.

8

Verify the operation of the clutch switch by operating the cruise control and checking the clutch switch stops
operation of the cruise control when the clutch pedal is pressed.