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OCS-OCIL Circuit

Measure resistance between Key Power Circuit at the fuse panel (+ probe) and test pin No. 32 (- probe) at the breakout box. If resistance is less than 5 ohms, go to next step. If resistance is more than 5 ohms, check for a faulty indicator bulb (4WD LOW LED or OCIL) or defective fuse in fuse panel. If fuse is okay, repair open circuit, remove breakout box and reconnect ECA. Rerun QUICK TEST.

Fig 1: Fuse Panel