Starter Signal

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Connect ECM test harness between ECM and harness connector. Measure voltage on ECM test harness terminals B9 (positive) and A26 (negative) with ignition switch in START position. See Figure . If battery voltage is present, starter signal is okay. If voltage is not present, inspect fuse No. 18. If fuse is okay, repair open in Blue/White wire between ECM and fuse No. 18.