CAUSE D - IGN 2 VOLTAGE SHORTED TO BATTERY SOURCE
PROCEDURE OR ACTION:
1. Ensure truck power is OFF.
2. At the VSM, disconnect CPS 8 from VSM.
3. Select volts scale on DMM.
4. Measure voltage across the harness connector CPS 8, pin 6 (+) and the negative ( ) terminal of battery.
Is voltage approximately system voltage?
YES: The IGN voltage is shorted to an unswitched battery source within the harness. Refer to Electrical
Schematic in Diagrams and Schematics 8000 SRM 1152 to identify unswitched voltage sources. Locate and
repair/replace shorted wire/connection. See Wire Harness Repair 2200 SRM 1128.
NO: Go to Step 5.
5. Turn truck power ON.
6. Repeat Step 4.
Is voltage approximately system voltage?
YES: The IGN voltage is shorted to a switched battery source within the harness. Refer to Electrical Schematic
in Diagrams and Schematics 8000 SRM 1152 to identify switched voltage sources. Locate and repair/replace
shorted wire/connection. See Wire Harness Repair 2200 SRM 1128.
NO: Go to Cause E.
CAUSE E - FUNCTIONAL FAILURE IN CONTROLLER
PROCEDURE OR ACTION:
1. Ensure all previous procedures have been completed.
2. Ensure truck power is OFF.
3. Ensure that all connections to the controller are completely inserted.
4. Ensure truck power is OFF for no less than 30 seconds, and then to ON to clear displayed DTC.
Does reported DTC reoccur?
YES: Go to Step 5.
NO: Problem corrected. Resume operation.
5. At the DSC, press ENTER to access Main Menu.
6. Scroll to VIEW VERSIONS, press ENTER.
7. Scroll to TRUCK SERIAL NUMBER, press ENTER.
8. View the TRUCK SERIAL NUMBER on the display.