Check For VBAT To ICM

Turn key off and disconnect PCM. Set DVOM to 20-volt scale. Turn ignition on. Measure voltage between breakout box pins No. (+) J51 (VBAT E) and (-) J7 (BAT negative). If voltage is greater than 10.5 volts, go to CHECK FOR GROUND OPEN TO ICM. If voltage is 10.5 volts or less, repair open or short in circuit from ignition switch.