Toyota 90919-02135 Ignition Coil Assembly

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Disconnect the battery's negative terminal, ensuring you have the stereo's anti-theft code if needed. Lift and secure the vehicle. Remove the coil's heat shield and mounting bolts. Use an ohmmeter to measure resistance between coil terminals and compare with primary and secondary resistance. If values are off, replace the coil. To do so, disconnect the battery again, remove the heat shield, disconnect wires from coil terminals, remove coil from distributor housing. Reverse these steps for installation.

- a) Measure the resistance between the positive and negative terminals to check the primary resistance of the coil for 2S-E, 3S-FE, and 5S-FE engine models. For the secondary resistance of the same models, measure the resistance between the positive terminal and the high tension terminal. For 35-GE engine models, measure the resistance between the positive and negative terminals for primary resistance. - b) Measure the resistance between the positive terminal and the high tension terminal for 35-GE engine models to check primary resistance. For 4A-FE engine models, measure the resistance between the positive and negative terminals for primary resistance and between the positive and high tension terminals for secondary resistance.