DTC 522761-3 - Switched Battery Voltage 2 (IGN 2) OORH. (Reading High)
Did you have a battery charger hooked up to this truck? If not check the alternator output.
A. IGN VOLTAGE SHORTED TO UNSWITCHED BATTERY SOURCE IN PDM OR PDM/VSM HARNESS
B. IGN VOLTAGE SHORTED TO UNSWITCHED BATTERY SOURCE IN PDM OUTPUT HARNESS
C. IGN VOLTAGE SHORTED TO SWITCHED BATTERY SOURCE IN PDM OR PDM/VSM HARNESS
D. IGN 2 VOLTAGE SHORTED TO BATTERY SOURCE
E. FUNCTIONAL FAILURE IN CONTROLLER
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