27
SECTION C: DIAGNOSTIC TROUBLE CODE (DTC)
BLINK CODE QUICK REFERENCE
To Read/Clear Diagnostic Troubleshooting Codes (DTCs):
1. Apply constant power to the trailer (ignition switch).
2. Within 15 seconds, apply/release the brake pedal at 1 second intervals:
(a) 3 times for displaying Active DTCs.
(b) 4 times for displaying Inactive DTCs.
(c) 5 times for clearing Active DTCs.
3. After 5 seconds delay, the blink codes will be displayed.
4. Observe the trailer-mounted ABS indicator lamp and record blink code(s).
5. Refer to blink code chart for description.
6. After making repairs and clearing Active DTCs, verify lamp is no longer illuminated.
1st Blink Code
2nd Blink Code
Repair Information
Code
Location
Code
Description
1
All
1
No Diagnostic Trouble Codes (DTCs)
• System fully operational - no DTCs detected
2
Sensor SL
1
Sensor signal invalid - large air gap
• Go to Section G - Dynamic Wheel Speed Sensor (WSS)
DTCs
3
Sensor SR
2
Sensor signal invalid - loss of signal
• Go to Section G - Dynamic WSS DTCs
4
Sensor SAL
3
Sensor signal invalid - noisy
• Go to Section G - Dynamic WSS DTCs
5
Sensor SAR
4
Sensor shorted or open
• Go to Section G - Static WSS DTCs
5
Tire diameter out of range
• Verify correct tire size, proper tire inflation & correct number of exciter ring teeth.
Verify that the Electronic Control Unit (ECU) has the proper tire size settings.
6
Sensor configuration error
• Verify correct ABS configuration. If needed, reset to the default ABS
configuration and power-up to initiate auto-configuration.
6
Power
1
Over-voltage
• Go to Section F - Power Supply
2
Low-voltage
• Go to Section F - Power Supply
3
Excessive power line resistance
• Go to Section F - Power Supply
7
Valve MOD1
1
Hold solenoid (AUX) shorted or open
• Go to Section H - ABS Modulator DTCs
8
Valve MOD2
2
Release solenoid (AUX) shorted or open • Go to Section H - ABS Modulator DTCs
9
Valve MOD3
3
ABS modulator dynamic error
• Go to Section H - ABS Modulator DTCs
4
Valve configuration error
• Verify correct ABS configuration. If needed, reset to the default ABS
configuration and power-up to initiate auto-configuration.
10
Common
1
Valve MOD1/2 low-side switch shorted
to ground
• Go to Section H - ABS Modulator DTCs
2
Valve MOD3 (AUX) low-side switch
shorted to ground
• Go to Section H - ABS Modulator DTCs
3
ABS modulator dynamic error - all valves • Go to Section H - ABS Modulator DTCs
4
Excessive ABS activity
• Go to Section G - Dynamic WSS DTCs
11
ECU
1
ECU internal error
• Check for damaged or corroded connectors. Check for damaged wiring.
After repairs or if no issues found, then clear DTCs. If DTCs return, replace
the module.
2
ECU configuration error
• Verify correct ABS configuration. If needed, reset to the default ABS
configuration and power-up to initiate auto-configuration.
12
Diagnostics
1
J1587 diagnostics (AUX6) shorted or
open
• Check for corroded/damaged wiring or connectors between the ECU and
J1587 Diagnostic (AUX6). Replace/repair J1587 Diagnostic (AUX6) wiring
or components as required.
13
Indicator Lamp
1
ABS lamp (AUX7) shorted or open
• Go to Section E - Trailer ABS Indicator Lamp
Содержание TABS-6 TRAILER ABS MODULE
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