7A2-162 TRANSMISSION CONTROL SYSTEM (JR405E)
Parking
Legend1. Input shaft
2. Front planetary carrier
3. Front pinion gear
4. Front sun gear
5. Rear sun gear
6. Rear pinion gear
7. Rear internal gear
8. Output shaft
9. Reverse clutch 10. 2-4 brake
11 . H i g h c l u t c h
12. Front internal gear
13. Rear planetary carrier
14. Low clutch
15. Low & reverse brake
16. Low one-way clutch
17. Parking pawl
Although the driving force of the input shaft (1) is
transmitted to the rear sun gear (5) and reverse & high
clutch drum, the driving force is not transmitted to the
output shaft (8) since all of the clutches and brakes are
not engaged. Therefore, the vehicle can move in this
condition. However, since the output shaft (8) is
mechanically locked with the parking pawl (17), the rear
planetary carrier (13) and front internal gear (12) are
locked. For this reason, the vehicle does not move.
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ISUZU KB P190 2007
TRANSMISSION CONTROL SYSTEM (JR405E) 7A2-163
Neutral
Legend1. Input shaft
2. Front planetary carrier
3. Front pinion gear
4. Front sun gear
5. Rear sun gear
6. Rear pinion gear
7. Rear internal gear
8. Output shaft
9. Reverse clutch 10. 2-4 brake
11. High clutch
12. Front internal gear
13. Rear planetary carrier
14. Low clutch
15. Low & reverse brake
16. Low one-way clutch
17. Parking pawl
Although the driving force of the input shaft (1) is
transmitted to the rear sun gear (5) and reverse & high
clutch drum, the driving force is not transmitted to the
output shaft (8) since all of the clutches and brakes are
not engaged. Therefore, the vehicle can move in this
condition.
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TO MODEL INDEX
ISUZU KB P190 2007
Cruise Control – HFV6 Page 8C–7
Activated and Deactivated
When the cruise control is enabled, the vehicle speed must be above 40 km/h and the cruise control switch assembly
pressed to SET–COAST, the cruise control will be activated and the vehicle will maintain the set speed. When
deactivated by the methods described within this section, the vehicle will no longer maintain the set speed, but the cruise
control will still be engaged.
Cruise Active
When the cruise control is activated via the cruise control
switch assembly, the cruise set warning lamp will illuminate
the instrument cluster assembly.
Cruise Deactivated
Upon receiving a signal to deactivate the cruise control the
ECM will provide a signal to the instrument cluster, via the
PIM, to inform the user the cruise control is deactivated.
When the cruise control is deactivated via the cruise control
switch assembly, the brake pedal, or the clutch pedal, the
cruise set warning lamp will turn OFF within the instrument
cluster assembly.
Figure 8C – 5
Enabling the Cruise Control
Refer to 2.3 Wiring Diagrams for the following description.
W hen the cruise control ON-OFF button is pressed, 12 V is applied to the powertrain interface module (PIM) connector
B – 97 pin 14. This informs the PIM the user has requested the cruise control function be engaged or disengaged. This
signal is then output by the PIM as GM LAN protocol along the bus to the engine control module (ECM). The ECM
recognises the command from the PIM to engage the cruise control. The PIM then provides a ground signal to B – 97 pin
13 the cruise control ON-OFF switch indicator lamp, to inform the user the cruise control is engaged.
Brake Before Cruise
Before the cruise control can be activated the driver must have applied the brakes and the system received a valid
response at least once per ignition cycle. If the driver manages to drive the vehicle without having used the brakes before
pressing the cruise control ON–OFF button, the cruise control cannot be activated.
Activating the Cruise Control
The user activates the cruise control at a desired speed above 40 km/h by pressing the cruise control switch assembly
SET–COAST button. This provides a 12 V signal to the PIM through connector B – 97 pin 15. The PIM then outputs this
signal as GM LAN protocol through the data bus to the ECM. If the ECM already has cruise control engaged, upon
receipt of the message from the PIM, the ECM will activate cruise control and set the speed. The ECM receives all the
various inputs required to maintain the correct speed and then controls the throttle actuator control assembly depending
on the load on the engine (ascending or descending hills, etc).
Deactivating the Cruise Control
When the cruise control is activated, it can be deactivated by any of the following:
Pressing the Brake Pedal
When the brake pedal is pressed, two signals are sent directly to the ECM by the circuits from the brake pedal switch
assembly. The cruise cancel circuit will open (normally closed) thus dropping the supply voltage from the ECM connector
C – 56 pin 46. Simultaneously, the stop lamp circuit will close (normally open) and supply 12 V to the ECM at connector
C – 56 pin 10. This is a double redundancy system so that if either switch or circuit from the brake pedal switch assembly
fails, the cruise control will still be deactivated.
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