SERIES 60 EGR TECHNICIAN'S GUIDE
[b]
If the results in this step cannot be attained,
Check VPOD Input Pressure
.
NOTE:
Both activations must operate their component with full travel of the linkage to hit the
stops.
Check VPOD Input Pressure
Follow these steps to check VPOD input pressure:
1. Measure VPOD input pressure to port 1; ensure it is between 703 – 1296 kPa (90 –
120 psi).
[a]
If the supply pressure is not between 703 – 1296 kPa (90 – 120 psi), troubleshoot the
vehicle air system until that result is obtained.
[b]
If the supply pressure is between 703 – 1296 kPa (90 — 120 psi),
Check Variable
Output Pressure Device (VPOD) P/N and Supply Voltage
.
Check Variable Output Pressure Device (VPOD) P/N and Supply Voltage
The following checks should be performed for the VPOD P/N and supply voltage:
1. Check VPOD label to determine if it is + 12V or + 24V compatible.
2. Unplug VPODs mating connector. A 1,000 Ohm resistor is needed for the next step. Insert
the resistor between cavity 1 and 3 for ease of checking with the VOM.
[a]
Turn ignition switch ON.
[b]
Measure voltage from pin 3 to pin 1.
[c]
Plug in DDR and check ECM voltage.
3. Is the VPOD P/N and voltage, and ECM voltage correct?
[a]
If the VPOD P/N and voltage are correct,
Check VPOD Wiring
..
All information subject to change without notice.
(Rev. April 2004)
5-11
7SE60 0404
Copyright © 2004 DETROIT DIESEL CORPORATION
