Section 5.28 PID 110, FMI 4, Flash Code 15, the Coolant Temperature Sensor Input Voltage Low

Section 5.28
PID 110, FMI 4, Flash Code 15, the Coolant Temperature Sensor Input Voltage Low

The Coolant Temperature Sensor (CTS) input voltage is low due to a short.‪

Section 5.28.1
Troubleshooting PID 110, FMI 4, FLASH CODE 15

Troubleshoot as follows:‪

1. Check wire 133 (yellow, coolant temperature) cavity P-3 in the Engine Sensor Harness (ESH) 30–pin connector for a short to ground (see Figure "Engine Sensor Harness 30–pin Connector" ). If there is a short, repair or replace any open wire(s).
   

   Figure 1. Engine Sensor Harness 30–pin Connector

   1. If the code is still active, go to step .
   2. If the code is no longer active, refer to "5.28.2 Verification" .
2. Check pin B (coolant temperature) in the Coolant Temperature Sensor connector for a short. If there is a short, repair or replace any open wire(s).
   1. If the code is still active, call Detroit Diesel Technical Support.
   2. If the code is no longer active, refer to "5.28.2 Verification" .

Section 5.28.2
Verification

Verify troubleshooting as follows: ‪

1. Check the DDR to see if PID 110, FMI 4, Flash Code 15 is still active.
   1. If the code is still active, go to step 2.
   2. If the code is not active, troubleshooting is complete.
2. If the code is still active, call Detroit Diesel Technical Service.