Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

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Diode Trio: Service and Repair







DIODE TRIO TEST
Check the three diodes for continuity by connecting an ohmmeter to both ends of each diode. Each diode should have continuity in only one direction.

If continuity is present in both directions, the diode is defective and the heatsink assembly must be replaced.