Cherokee 2WD L4-150 2.5L VIN H TBI (1988)
Automatic Shut Down (ASD) Relay: Description and Operation
Relay Locations
The ECU controls when voltage is allowed to flow to the B+ Latch Relay. This relay is energized once the engine has been started and remains
energized until approximately 3 to 5 seconds after the engine has been shut off. It allows current to flow to the Idle Speed Actuator (ISA) Motor after
the engine has been shut off. This current extends the ISA for the next start-up.
