Electrical systems – 5000

Diagnostic and troubleshooting

T-codeValid

Table 28: List of error codes

CodeDescriptionPossible cause / Hint or Solution

E125 Steer servo - internal short circuit [A5, M6]

E126 Steer servo - current offset error [A5, M6]

E127 Steer servo - temperature too high [A5, M6] (>85º C)

Defective steer servo [A5,M6] / Restart the truck

Defective steer servo [A5,M6] / Restart the truck.

Steering activity too intensive

Defective steer servo [A5,M6] / Restart the truck.

E128 Not applicable at present -

E129 Steer servo - supply undervoltage

E130 Steer servo - analogue steer signal input fault [R2]

Battery charge too low

Intermittent connection in servo supply circuit [A5]

Steer servo fuse [F52] faulty or blown. / Check condition of Fuse [F52] Charge battery.

Faulty steer angle potentiometer. [R2]

Intermittent connection in potentiometer circuit [R2,A5] / Check wiring to potentiometer [R2]

Move tiller unit handle in all directions to ensure no wiring problems exist.

E131 Steer servo - analogue steer signal input fault

Faulty steer angle potentiometer. [R2]

Intermittent connection in potentiometer circuit [R2,A5:INP.A_IN0] / Check 0,4 to 4.8V between wires 9492, check wiring to potentiometer [R2]

Move tiller unit handle in all directions to ensure no wiring problems exist.

E132 Steer servo - current limit reached

Steered portion of drive unit not moving freely./ Check for free movement of drive wheel on floor.

Check steering drive train is free of dirt or other foreign objects. See also code C82.

E133 Steer servo - analogue steer signal input fault

Faulty steer angle potentiometer. [R2]

Intermittent connection in potentiometer circuit [R2,A5:INP.A_IN1] / Check 0,4 to 4.8V between wires 9493 , check wiring to potentiometer [R2] Move tiller unit handle in all directions to ensure no wiring problems exist.

E134 Steer servo - analogue steer signal input short circuit

E135 Steer servo - offset value error

E136 Steer servo - steer angle potentiometer error

E137 Steer servo - checksum error on received data

Faulty steer angle potentiometer. [R2] or wiring Short circuit between [A5:INP.A_IN1 and INP.A_IN0] / Check wiring to potentiometer. [R2]. Move tiller unit handle in all directions to ensure no wiring problems exist.

Requires recalibration / Recalibrate steering (parameter #36) See # 36 - Steer servo calibration on page 46

Defective potentiometer [R2] / Ensure potentiometer is fitted correctly.

Recalibrate steering. See # 36 - Steer servo calibration on page 46

Faulty wiring. / Check CAN bus signal cables and connections.[A5, A2] Restart the truck.