TESTING

1. Disconnect the wiring plug from the ignition switch, and connect an ohmmeter to the switch side plug.
2. Operate the switch, and check the continuity between the terminals.
3. It may be necessary to remove and reinsert the ignition key, and check the operation of the key reminder switch.
4. If the ignition switch fails any of the tests, replace it with a new switch.

   Fig. 1: The ignition switchside connector's terminal configuration — 1983–86 Monteros and Pick-ups

   Fig. 2: The ignition switchside connector's terminal configuration — 1987–95 Pick-ups and 1987–91 Monteros

   Fig. 3: The ignition switchside connector's terminal configuration — 1992–95 Monteros

   Fig. 4: Check the continuity between the terminals when the ignition switch is in the various positions — 1983–86 Monteros and Pick-ups

   Fig. 5: The continuity table shows which terminals should be checked and which position the ignition switch should be in — 1987–95 Pick-ups and 1987–91 Monteros

   Fig. 6: The continuity inspection chart for 1992–95 Monteros — if the ignition switch fails any of the tests, replace it with a new switch