37
Location Measurement
TCV to TCV Common
7 to 19 Ohms
Release, Hold, Common
Open Circuit (no continuity)
to Voltage or Ground
Troubleshooting Diagnostic Trouble Codes:
Traction Control Valves
18
Drive Axle Traction Control Valve
19
Steer Axle Traction Control Valve
1st . Blink
Code
Location
Cab-mount ECU:
Looking into wire harness connector
Traction Control Valve Repair Tests:
1. Take all measurements at ECU harness connector pins in order to check wire harness
and traction control valve. Probe the connector carefully so that the terminals are not
damaged.
2. Tractor Control Valve resistance measurements should read:
Connector Pin Traction Control Test
X1
4 Drive Axle Traction Control Valve Common
18 Way
5 Drive Axle Traction Control Valve
Connector Pin Traction Control Test
X3
3 Steer Axle Traction Control Valve Common
15 Way
5 Steer Axle Traction Control Valve
X 4
2nd .
Blink
Code
Diagnostic Trouble
Code Description
Repair Information
1
TCV Solenoid Shorted
to Ground
Verify 7 to 19 ohms between TCV and TCV common. Verify no continuity
between TCV leads and ground. Check for corroded/damaged wiring
or connectors between ECU and TCV.
2
TCV Solenoid Shorted
to Voltage
Verify 7 to 19 ohms between TCV and TCV common. Verify no continuity
between TCV leads and voltage. Check for corroded/damaged wiring
or connectors between ECU and TCV.
3
TCV Solenoid Open
Circuit
Verify 7 to 19 ohms between TCV and TCV common. Check for
corroded/damaged wiring or connectors between ECU and TCV.
4
TCV Configuration Error The ECU is not configured for ESP or ATC, but has detected the presence
of a TCV. Verify TCV wiring. Inspect for the presence of a TCV. Verify
ECU configuration.
nOTE: Also see ECU 13-8 and 13-18
DTC repair information on page 36, for
a potential connection between these
TCv DTCs and ECU DTCs.
ATR valve inspections should include: looking for kinked air hoses; inside the harness socket on the valve for
removed or corroded connector pins; and a test to verify that the ATC valve solenoids are functioning correctly.
