MBE 900 4000 Troubleshooting – Section 4.2 Troubleshooting PID 45

Section 4.2
Troubleshooting PID 45

The following procedures will troubleshoot PID 45.‪

Section 4.2.1
045 03 – Open Circuit Fault

Perform the following step to troubleshoot an open circuit fault.‪

1. Measure the resistance between wire 10 on the 12-pin connector and the grid heater ground.
   1. If resistance is greater than 70 mΩ for a 12-volt system, replace the grid heater. Erase fault code memory.
   2. If resistance is less than 70 mΩ for a 12-volt system, contact Detroit Diesel Technical Service.

Section 4.2.2
045 04 – Short to Ground Fault

Perform the following step to troubleshoot a short to ground fault.‪

1. Measure the resistance between wire 10 on the 12-pin connector and the grid heater ground.
   1. If resistance is 0 Ω, replace the grid heater. Erase fault code memory.
   2. If resistance is greater than 0 Ω, contact Detroit Diesel Technical Service.