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Home › Mercury › 1987 › Lynx XR3 › Repair and Diagnosis › Engine Performance › System › Fuel Injection System - 4-CYL Diesel › Testing › Glow Plug Control Diagnosis › Power Circuit

Power Circuit

  1. Connect glow plug harness. Connect 12-volt test lamp between control module terminal No. 6 and ground. See Fig 1 .
  2. Turn ignition switch to "ON" position. If lamp does not light, service or replace ignition switch and/or wiring as necessary. If lamp lights, circuit is okay.
Fig 1: Glow Plug Control Module Connector Module is located to left of steering column on shake brace. Courtesy of Ford Motor Co.
G5394
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