High Battery Voltage
electrical
Description
Battery voltage at the main microprocessor is greater than 17VDC, and the unit shuts down and alarms.
Activation Conditions
Battery voltage at the main microprocessor is greater than 17VDC
Unit Behavior
Shutdown and alarm
Reset Conditions
Battery voltage between 11 and 14VDC OR Alarm Reset
Corrective Actions
1. Check Battery Voltage a. Test voltage at battery with unit off. Must be between 11-16 VDC. b. Test voltage at battery with unit running. Must be between 12-16 VDC. NOTE Voltage with unit running should always be higher than voltage with unit off due to battery charging. 2. Check Alternator Voltage a. Test voltage at ALT B+ with unit off. Must be between 11-16 VDC. b. Test voltage at ALT B+ with unit running. Must be between 12-16 VDC. 3. Check Voltage at Climate Control Module a. Check voltage reading at CCM J6-1 and J6-2. Must be between 11-16 VDC. b. Check Unit Data voltage reading. Must be within 0.5 VDC of reading obtained at CCM J6-1 and J6-2