Lexus 85110-33160 Motor Assy, Windshield Wiper

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For diagnosing wiper issues, follow these steps: If wipers operate slowly, check battery condition, inspect wiper motor for binding, and repair as needed. If still slow, inspect connections and replace motor if necessary.If wipers fail, check fuse; if good, test motor with ground jumper. If motor works, fix ground; if not, test motor off the vehicle with fused jumper wires. If it works, check linkage; if not, replace motor. If no voltage, check switch and wiring.If wipers work at one speed, test wiring continuity and terminal connections; if OK, replace switch.For interval function issues, test wiring continuity; if fine, replace interval module.If wipers fail to park, check motor voltage with switch off but ignition on; if present, replace motor. If not, trace and fix wiring.If wipers won't stop unless ignition is off, disconnect switch wiring; if wipers stop, replace switch. If not, replace motor.If wipers won't retract under hood, check for obstructions and wiring continuity; if OK, replace motor. To remove wiper motor: Remove wiper arms and cowl cover. Disconnect motor's electrical connector, remove wiper linkage retaining bolts, and remove assembly with motor. Remove motor from linkage assembly. For reinstallation, follow the reverse of removal procedure.