WABCO ESC - Section 7: SPN, SID, FMI Fault Codes; SPN, SID, FMI Diagnostic Trouble Code List

7 SPN, SID, FMI Fault Codes
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WABCO Maintenance Manual MM-0112 (Revised 07-18)
7 SPN, SID, FMI Fault Codes
SPN, SID, FMI Diagnostic Trouble Code List
Figure 7.1
Figure 7.1
4010644a
SPN SID FMI
Blink
Code
Description
Warning
Light
System
Reaction
Cause Action
Left Front Wheel Speed Sensor
0 1 TOOLBOX ABS WL
ABS ECU not fully communicating with TOOLBOX
• Check communication device connections. • Verify protocol (J1708/J1939) was not changed on the same key cycle. • Verify RP1012A compliant device, and verify the device software and firmware are up
to date.
• Check data link connector for issues.
789 1 1 3 + 2 Air Gap ABS WL
ABS Wheel
Disabled
ESC/RSC/ATC/
HSA Disabled
Sensor air gap is too large; sensor output voltage is too low but is high enough to be read by ECU.
• Adjust wheel sensor to touch tone ring. • Check condition of ABS sensor head. • Check for loose wheel bearings or excessive hub runout. • Check mounting of ABS tone ring and condition of teeth. • Check condition and retention of ABS sensor spring clip. • Check ABS sensor cable routing and clipping. • Turn the wheel at half a revolution per second and verify 0.2 AC volt sensor output
voltage.
789 1 2 5 + 2 Incorrect Tire ABS WL
ABS Wheel
Disabled
ESC/RSC/ATC/
HSA Disabled
System has detected a significant difference in the proportion of tire diameter to number of tone ring teeth between wheel ends. 10% (+/-2%)
• Check for tire size mismatch. • Check for correct number of tone ring teeth. • Verify that ECU is programmed for the correct vehicle.
789 1 3 4 + 2
Shorted to
UBATT
ABS WL
ABS Wheel
Disabled
ESC/RSC/ATC/
HSA Disabled
Continuity between the sensor connection and battery voltage (short circuit) is detected.
• Verify 900-2000 ohms resistance through sensor circuit. • Verify no DC voltage through sensor circuit Key ON. • Check for corroded or damaged wiring between the ECU and the ABS wheel speed
sensor.
789 1 4 4 + 2
Shorted to
Ground
ABS WL
ABS Wheel
Disabled
ESC/RSC/ATC/
HSA Disabled
Continuity between the sensor connection and ground (short circuit) is detected.
• Verify 900-2000 ohms resistance through sensor circuit. • Check for continuity between the ABS sensor connection and ground. • Check for corroded or damaged wiring between the ECU and the ABS wheel speed
sensor.
• Verify wheel speed sensor wires are not switched left/right.
789 1 5 4 + 2 Open Circuit ABS WL
ABS Wheel
Disabled
ESC/RSC/ATC/
HSA Disabled
An open circuit has been detected, i.e. ECU detects a disconnected wheel speed sensor.
• Check sensor, sensor cable and connectors to verify no loose or damaged connection. • Verify 900-2000 ohms resistance through sensor circuit. • Verify wheel speed sensor wires are not switched left/right.
789 1 6 4 + 2 Short Circuit ABS WL
ABS Wheel
Disabled
ESC/RSC/ATC/
HSA Disabled
Continuity interruption between the sensor connections (short circuit) has been detected.
• Verify 900-2000 ohms resistance through sensor circuit. • Check for corroded or damaged wiring between the ECU and the ABS wheel speed
sensor.