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DTC B1972: Low Power Output Fault: Testing

WARNING: This page is about a different car, the 1998 Cadillac Eldorado and 1998 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.

Turn ignition switch to OFF position. Disconnect PZM connectors. Remove PZM fuse (10-amp) located in trunk compartment fuse block. Using DVOM, measure resistance between PZM Brown 32-pin connector C2, terminal C2 (Orange wire) and ground. If resistance is 5 ohms or less, repair short to ground in Orange wire between trunk compartment fuse block and PZM. If resistance is greater than 5 ohms, replace PZM. See REMOVAL & INSTALLATION.

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