Check Variable Output Pressure Device Input Pressure; Check Variable Output Pressure Device Part Number And Supply Voltage - Detroit Diesel Series 60 EGR Technician Manual

5. Test: activating 90% duty cycle: Pressure = 485 - 515 kPa (70-75 psi).
[a] If the VPOD readings are as listed, check for active codes. Refer to the "Check for
Active Codes" section.
[b] If the results in this step cannot be attained, check VPOD input pressure. Refer to the
"Check VPOD Input Pressure" section.
NOTE:
Both activations must operate their component with full travel of the linkage to hit the
stops.

Check Variable Output Pressure Device Input Pressure

Testing steps are as follows.
1. Measure the VPOD input pressure to port 1; ensure it is between 703-1296 kPa (90 –
120 psi).
[a] If the supply pressure is greater than 703-1296 kPa (90-120 psi), troubleshoot the
vehicle air system until that result is obtained.
[b] If the supply pressure is greater than 703-1296 kPa (90-120 psi), check the VPOD
part number (P/N) and supply voltage. Refer to the "Check Variable Output Pressure
Device Part Number and Supply Voltage" section.
2. Perform a Check Variable Output Pressure Device Part Number and Supply Voltage .

Check Variable Output Pressure Device Part Number and Supply Voltage

The following checks should be performed for the VPOD part number and supply voltage:
1. Check the VPOD label to determine if it is +12V or +24V compatible.
2. Unplug VPOD's 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 volt ohm meter (VOM)
[a] Turn ignition switch ON.
[b] Measure voltage from pin 3 to pin 1.
[c] Plug in either DDDL or 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. Refer to the "Check
VPOD Wiring" section.
[b] If the VPOD P/N and voltage are not correct, contact the DDC Customer Support
Center at 313-592-5800.
All information subject to change without notice. (Rev. June 2005)
7SE60 0506 Copyright © 2005 DETROIT DIESEL CORPORATION
SERIES 60 EGR TECHNICIAN'S MANUAL
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