Instruction
Guide
L31296A Rev. 3/20
Service Replacement Intelligent
Trailer Control Module (ITCM)
ABS ECU
Configuration
The Haldex ITCM ECU will auto-configure based on the number of speed sensors and valves plugged
into the ECU. Note that the Air Valves are renamed to 21, 22 and 23. Refer to the Electrical Connection
diagram for Modulator connection information.
2S/1M
4S/2M Side-by-Side
4S/2M Axle-by-Axle
S1B
S1A
Tri-Axle
Curb
----- 2S/1M -----
(Air or Spring Suspension)
Road
S1B
S1A
21
Tandem Axle
Curb
(Air Suspension)
Road
----- 2S/1M -----
S1B
S1A
21
Tandem Axle
Curb
(Spring Suspension)
Road
----- 2S/1M -----
21
Road
Curb
----- 2S/1M -----
S1B
S1A
21
Single Axle
(Air or Spring Suspension)
Curb
Road
----- 4S/2M -----
Tri-Axle
(Air or Spring Suspension)
(Air Suspension)
21
22
S1B
S1A
S2B
S2A
Quad-Axle
Curb
Road
----- 4S/2M -----
S1B
S1A
S2B
S2A
21
22
(Spring Suspension)
Quad-Axle
Curb
Road
----- 4S/2M -----
S1B
S1A
S2B
S2A
21
22
Curb
Road
----- 4S/2M -----
Tandem Axle
(Air or Spring Suspension)
S1B
S1A
21
22
S2B
S2A
Curb
Road
Tri-Axle
(Air or Spring Suspension)
----- 4S/2M -----
Tandem Axle
Curb
(Air or Spring Suspension)
Road
----- 4S/2M -----
22
21
S2B
S1B
S2A
S1A
21
21
22
S2A
S1A
S2B
S1B
Quad-Axle
Curb
(Spring Suspension)
Road
----- 4S/2M -----
S2B
S1B
22
S2A
S1A
21
Full Trailer
Curb
(Air or Spring Suspension)
Road
----- 4S/2M -----
22
21
S2B
S1B
S2A
S1A
Quad-Axle
Curb
(Air Suspension)
Road
----- 4S/2M -----
S2B
S1B
22
S2A
S1A
21
L31296A US Rev. 3/20 Art Only
Additional Information
Installation and Troubleshooting Guides available on the Haldex website.
Intelligent Trailer Control Module (ITCM) Installation/Service Manual (L31286W)
DIAG+ Diagnostic Software Users Guide (L31287W)
Technical Support Department
Please call (816) 891-2470 and Press #2 to reach a
Haldex Technical Specialist.
All manuals and user guides at all-guides.com