Toyota 28100-75140 Starter Motor

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Remove the bracket from the upper section of the starter/solenoid assembly.

Run the engine until it reaches normal operating temperature, then disconnect the coil wire from the distributor cap and ground it on the engine. For models with distributor-less ignition systems, detach the primary (low voltage) electrical connectors from the ignition coils.

Disconnect the electrical connectors from the starter motor/solenoid assembly by removing the nut and disconnecting the battery starter cable from the B+ terminal, then disconnect the electrical connector from the starter.

Remove and check the starter/solenoid assembly on the bench. The solenoid is likely defective. Before proceeding, try to rotate the crankshaft pulley to ensure the engine is not seized. With the starter/solenoid assembly mounted in a vise, connect jumper cables from the battery to the starter and apply battery voltage to the solenoid S terminal for 10 seconds or less. Observe the solenoid plunger and pinion drive: - If the pinion drive extends but does not rotate, the solenoid is operating but the starter motor is defective. - If there is no movement but the solenoid clicks, the solenoid or starter motor is defective. - If the solenoid plunger extends and rotates the pinion drive, the starter/solenoid assembly is working properly.