Cherokee 2WD L4-150 2.5L VIN H TBI (1988)
Backup Lamp Switch: Testing and Inspection
Automatic Transmission - 30RH,42,44RE
Automatic Transmission - 30RH,42,44RE
To test the switch, remove the wiring connector. Then test for continuity between the center terminal and the transmission case. Continuity should exist
only when the transmission is in PARK or NEUTRAL.
Shift the transmission into REVERSE and test continuity at the switch outer terminals. Continuity should exist only when the transmission is in
REVERSE. Continuity should not exist between the outer terminals and the case.
Check gearshift linkage adjustment before replacing a switch that tests bad.
