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Troubleshooting Diagnostic Trouble Codes:
1st. Blink
Location
Code
7
Left Steer Axle
8
Right Steer Axle
9
Left Drive Axle
10
Right Drive Axle
16
Left Additional Axle
17
Right Additional Axle
20
Trailer PMV
2nd. Diagnostic
Blink Trouble Code
Code Description
1
2
3
4
5
6
7
8
24
Pressure Modulator Valves
Release
Verify no continuity between PMV leads and ground. Verify 4.9 to 5.5 ohms from
Solenoid
REL to CMN & HLD to CMN, and 9.8 to 11 ohms from REL to HLD. Check for
Shorted
corroded/damaged wiring or connectors between ECU and PMV.
to Ground
Release
Verify no continuity between PMV leads and voltage. Verify 4.9 to 5.5 ohms from
Solenoid
REL to CMN & HLD to CMN, and 9.8 to 11 ohms from REL to HLD. Check for
Shorted to
corroded/damaged wiring or connectors between ECU and PMV.
Voltage
Release
Verify 4.9 to 5.5 ohms from REL to CMN & HLD to CMN, and 9.8 to 11 ohms from
Solenoid
REL to HLD. Check for corroded/damaged wiring or connectors between ECU
Open Circuit
and PMV.
Hold
Verify no continuity between PMV leads and ground. Verify 4.9 to 5.5 ohms from
Solenoid
REL to CMN & HLD to CMN, and 9.8 to 11 ohms from REL to HLD. Check for
Shorted
corroded/damaged wiring or connectors between ECU and PMV.
to Ground
Hold
Verify no continuity between PMV leads and voltage. Verify 4.9 to 5.5 ohms
Solenoid
from REL to CMN & HLD CMN, and 9.8 to 11 ohms from REL to HLD. Check for
Shorted
corroded/damaged wiring or connectors between ECU and PMV.
to Voltage
Hold
Verify 4.9 to 5.5 ohms from REL to CMN & HLD to CMN, and 9.8 to 11 ohms from
Solenoid
REL to HLD. Check for corroded/damaged wiring or connectors between the ECU
Open Circuit
and PMV.
CMN Open
Verify 4.9 to 5.5 ohms from REL to CMN & HLD to CMN, and 9.8 to 11 ohms from
Circuit
REL to HLD. Check for corroded/damaged wiring or connectors between the ECU
and PMV.
Configuration
A mis-match exists between the ECU configuration and the modulator installation
Error
and wiring. Verify PMV wiring and installation. Verify ECU configuration.
Repair Information
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