94
8 System
diagnostics
DTC Displayed
Description
ECU TIME OUT
or
NO LIN
K
No supply on ignition
switched line.
Possible causes:
Truck fuse blown
Trailer Monitor or cable fault.
Open circuit B -. ISO7638
not connected
Sensor Group
WHEEL SENSOR 1A
CONTINUITY
1A Sensor/wiring open or
short circuit
WHEEL SENSOR 1B
CONTINUITY
1B Sensor/wiring open or
short circuit
WHEEL SENSOR 2A
CONTINUITY
2A Sensor/wiring open or
short circuit
WHEEL SENSOR 2B
CONTINUITY
2B Sensor/wiring open or
short circuit
Intermittent Low Sensor Output Group
WHEEL SENSOR 1A
SIGNAL INTEGRITY
1A Sensor signal fault
WHEEL SENSOR 1B
SIGNAL INTEGRITY
1B Sensor signal fault
WHEEL SENSOR 2A
SIGNAL INTEGRITY
2A Sensor signal fault
WHEEL SENSOR 2B
SIGNAL INTEGRITY
2B Sensor signal fault
Possible causes:
Loose sensor, sensor
connection, bracket or
exciter ring. Damaged
exciter ring, cable insulation
worn or maladjusted senor.
Low Sensor Output Group
WHEEL SENSOR 1A
OUTPUT LEVEL
1A Sensor system fault
WHEEL SENSOR 1B
OUTPUT LEVEL
1B Sensor system fault
WHEEL SENSOR 2A
OUTPUT LEVEL
2A Sensor system fault
WHEEL SENSOR 2B
OUTPUT LEVEL
2B Sensor system fault
Possible causes:
Sensor worn, maladjusted
sensor, wiring open or short
circuit
If a Diagnostic Trouble Code displayed is not listed here, check for intermittent sensor and wiring faults.
DTC Displayed
Description
Brake Apply Solenoid Group
BRA
K
E APPLY SOLENOID
SHORT CIRCUIT
Brake apply solenoid short
circuit
BRA
K
E APPLY SOLENOID
OPEN CIRCUIT
Brake apply solenoid open
circuit
BRA
K
E APPLY SOLENOID
SHORT TO B+
Brake apply solenoid
short circuit permanently
energised
BRA
K
E APPLY
UNSPECIFIED FAULT
Brake apply solenoid control
circuit fault
EPRV 21 Hold and Dump Solenoid Group
EPRV 21 HOLD SOLENOID
SHORT CIRCUIT
Modulator 21 hold solenoid
short circuit
EPRV 21 DUMP SOLENOID
SHORT CIRCUIT
Modulator 21 dump solenoid
short circuit
EPRV 21 HOLD SOLENOID
OPEN CIRCUIT
Modulator 21 hold solenoid
open circuit
EPRV 21 DUMP SOLENOID
OPEN CIRCUIT
Modulator 21 dump solenoid
open circuit
EPRV 21 HOLD SOLENOID
SHORT TO B+
Modulator 21 hold solenoid
short circuit permanently
energised
EPRV 21 DUMP SOLENOID
SHORT TO B+
Modulator 21 dump solenoid
short circuit permanently
energised
EPRV 21 HOLD SOLENOID
UNSPECIFIED FAULT
Modulator 21 hold solenoid
control circuit fault
EPRV 21 DUMP SOLENOID
UNSPECIFIED FAULT
Modulator 21 dump solenoid
control circuit fault
EPRV 22 Hold and Dump Solenoid Group
EPRV 22 HOLD SOLENOID
SHORT CIRCUIT
Modulator 22 hold solenoid
short circuit
EPRV 22 DUMP SOLENOID
SHORT CIRCUIT
Modulator 22 dump solenoid
short circuit
EPRV 22 HOLD SOLENOID
OPEN CIRCUIT
Modulator 22 hold solenoid
open circuit
EPRV 22 DUMP SOLENOID
OPEN CIRCUIT
Modulator 22 dump solenoid
open circuit
EPRV 22 HOLD SOLENOID
SHORT TO B+
Modulator 22 hold solenoid
short circuit permanently
energised
EPRV 22 DUMP SOLENOID
SHORT TO B+
Modulator 22 dump solenoid
short circuit permanently
energised
EPRV 22 HOLD SOLENOID
UNSPECIFIED FAULT
Modulator 22 hold solenoid
control circuit fault
EPRV 22 DUMP SOLENOID
UNSPECIFIED FAULT
Modulator 22 dump solenoid
control circuit fault
8.2 Diagnostic Trouble Codes (DTC)
Summary of Contents for ECO Tronic EBS
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