152 RENR2696-03
Troubleshooting Section
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Illustration 90
Schematic for the fuel injection pump (70 pin MIC)
Test Step 1. Check the Battery Voltage Test Step 2. Inspect the Electrical
Connectors and Wiring
A. Measure no-load battery voltage at the battery
terminals.
Expected Result:
The battery voltage should be no less than 11.0 volts
for a 12 volt system.
The battery voltage should be no less than 22.0 volts
for a 24 volt system.
Results:
• OK – Proceed to Test Step 2.
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• Not OK – The battery voltage is below normal. Illustration 91
Pin locations on the 31 pin MIC
Repair: Recharge the batteries or replace the (3) Fuel pump power control
batteries. Use the electronic service tool to clear (4) Fuel pump battery -
any logged diagnostic codes and then verify that (8) Fuel pump battery +
the repairs have eliminated the fault.
STOP.