Legacy Postal Wagon AWD F4-2.2L SOHC (1998)
1. Pressure Hold Valve (PHV).
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PHV is connected to one of the service brake pipes and pushrod A) is pushed in and/or pulled out by cam shaft (if) interlinked with the clutch
pedal to change the clearance between ball 6) and seal (a), thereby opening and/or closing the hydraulic circuit.
Normally, on a flat road, ball (9 is located at the front and the valve is kept opened regardless of the position of the pushrod. (This status is the
same as on a downhill road.)
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When stopping the vehicle on an uphill road by depressing both brake and clutch pedals, the ball rolls toward the rear and, at the same time,
the pushrod retracts to close the valve, so that hydraulic pressure is maintained. Even when taking your foot off the brake pedal, the hydraulic
pressure is maintained so far as the clutch pedal is kept depressed. In this status, when engaging the clutch ordinarily while depressing the
accelerator pedal, the maintained hydraulic pressure is released simultaneously with the generation of driving force to permit smooth starting.
Fig. 18 Hill Holder Activated
2. Activating Condition.
This device is activated only when depressing the clutch and brake pedals with the vehicle stopped on an uphill road.
When stopping the vehicle on an uphill road, the ball rolls toward the rear to seal the port and therefore the hydraulic pressure is maintained even
by releasing the brake pedal.
3. Inactive Status.
This accessory is not activated in any status other than the above.
a) While driving.
Fig. 19 Hill Holder Deactivated
