Cherokee 2WD L4-150 2.5L VIN H TBI (1988)
Brake Fluid Pump Relay: Description and Operation
Fig.26 Booster Pump Motor Relay Location
Fig. 27 - Relay Circuitry
BOOSTER PUMP MOTOR RELAY
The booster pump motor relay is diode suppressed and is located next to the booster pump and motor assembly (fig. 26).
The booster pump relay is not controlled by the ECU. It is controlled by a pressure switch located in the pump assembly. When energized by the
pressure switch, the relay closes, energizing the booster pump motor.
