Starter Signal

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Connect ECM test harness between ECM and harness connector. Measure voltage on ECM test harness terminals B5 (positive) and A26 (negative) with ignition switch in START position. See Figure . If battery voltage exists, starter signal is okay. If voltage does not exist, inspect fuse No. 9 (7.5-amp). If fuse is okay, repair open in Blue/Red wire between ECM and fuse No. 9.