Section 5. TroubleshootingToyota Model 7HBW23 Service Manual

Control Handle Display and Programming

Code E112 - Arm Angle Sequence Fault

Reason Incorrect sequence of arm angle inputs.

Possible Cause/ Corrective Action Arm angle input stuck on or off. Problem with arm angle input wiring. Problem with tiller arm. Check for correct sequence of arm angle switches. Communication error due to power amplifier PMT; allow PMT to reboot before turning truck ON.

Code E114 - Traction Motor Speed Fault

Reason Controller detected stalled traction motor.

Possible Cause/ Corrective Action Traction motor stalled. Excessive traction motor load at low speed. Brake may not be releasing or stuck on motor endbell. Check brake adjustment. Power amplifier may be bad.

Code E140 - Checksum Error

Reason ETAC software detected that checksum was invalid.

Possible Cause/ Corrective Action Internal ETAC fault (Control handle head). Bad software. Try downloading new software.

Code E141 - Software Problem

Reason ETAC found problem with software.

Possible Cause/ Corrective Action Internal ETAC fault (Control handle head). Bad software. Try downloading new software.

Code E142 - Power Amplifier Disable Error

Reason Power amplifier detected a major fault.

Possible Cause/ Corrective Action

Severe overvoltage (especially at main contactor close); check for correct voltage.

High current through a digital output. Check power amplifier outputs and wiring.

Open circuit in traction motor field circuit wiring or windings. Replace power amplifier.

Code E150 - Drive Communication Error

Reason ETAC did not receive CAN data from the power amplifier.

Possible Cause/ Corrective Action Short or open circuit in CAN wiring. Electrical noise in CAN wiring caused by bad connection, outside interference, or low voltage. Check CAN wiring. Try driving with a known-good battery or in a different environment. Bad power amplifier; ETAC internal error.