Toyota Corolla 1970-1987 Repair Guide

Circuit Breakers



See Figures 1 and 2

The circuit breakers found on the junction and relay blocks mount to the blocks with blades similar to the fuses. Before removing a breaker, always disconnect the negative battery cable to prevent potentially damaging electrical spikes within the system. Simply remove the breaker by pulling straight out from the block. Do not twist the circuit breaker, because damage may occur to the connectors inside the housing.

Some circuit breakers do not reset automatically. Once tripped, they must be reset by hand. Use a small screwdriver or similar tool; insert it in the hole in the back of the breaker and push gently. Once the breaker is reset, either check it for continuity with an ohmmeter or reinstall it and check the circuit for function

Reinstall the circuit breaker by pressing it straight in to its mount. Make certain the blades line up correctly and that the circuit breaker is fully seated. Reconnect the negative battery cable and check the circuit for function.

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Fig. Fig. 1: Removing a circuit breaker from the junction block

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Fig. Fig. 2: Resetting a circuit breaker