Section 6.12
SID 77, FMI 3, Flash Code 73, Gas Valve Position Input Voltage High
The gas valve position input voltage is above normal range.
Section 6.12.1
Troubleshooting SID 77, FMI 3, Flash Code 73
Troubleshoot as follows:
NOTICE: |
|
To avoid damage to the harness and connectors when disconnecting harness connectors, ensure the pulling force is applied to the connectors and not to the wires extending from the connectors. |
- Check wire 958 (orange and black, PSV position) for short to wire 416 (gray, 5 VDC sensor supply) at cavities M-2 (wire 958) and W-1 (wire 416) in the Engine Sensor Harness (ESH) 30–pin connector (see Figure
"Engine Sensor Harness 30–pin Connector"
) and pin E in the PSV connector (see Figure
"PSV Connector"
). If there is a short, repair or replace the wire(s), pins, and sockets.
Figure 1. Engine Sensor Harness 30–pin Connector
Figure 2. PSV Connector
- If code is still active, go to step 2.
- If the code is no longer active, refer to "6.12.2 Verification" .
- Check wire 958 (orange and black, PSV position) for a short to battery (+12/24 VDC) at cavities M-2 in the ESH 30–pin connector (see Figure
"Engine Sensor Harness 30–pin Connector"
) and pin E in the PSV connector (see Figure
"PSV Connector"
). If there is a short, repair or replace the wire(s), pins, and sockets.
- If code is still active, call Detroit Diesel Technical Service.
- If the code is no longer active, refer to "6.12.2 Verification" .
Section 6.12.2
Verification
Verify that troubleshooting was successful:
- Check the DDR to see if SID 77, FMI 3, Flash Code 73 is still active.
- If the code is still active, go to step 2.
- If the code is not active, troubleshooting is complete.
- If code is still active, call Detroit Diesel Technical Service.
| Series 50G and 60G Troubleshooting Guide - 6SE482 |
| Generated on 10-13-2008 |