Toyota Model 7HBW23 Service ManualSection 5. Troubleshooting

Control Handle Display and Programming

Code E151

- Drive Communication Tx Error

Reason ETAC could not send CAN data to the power amplifier.

Possible Cause/ Corrective Action

Code E157

Short or open circuit in CAN wiring.

Electrical noise in CAN wiring caused by bad connection, outside interference, or low voltage (especially while lifting or driving) possibly caused by over-current or short-circuit. Check CAN wiring. Try driving with a known-good battery or in a different environment. Bad power amplifier; ETAC internal error.

- CAN-bus Off Error

Reason ETAC detected problem with the CAN-bus.

Possible Cause/ Corrective Action

Code E159

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.

- Over Run Error

Reason ETAC detected problem with the CAN-bus.

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.

Code

E160

- Error In Reversing Circuit

Reason ETAC detected problem with throttle position sensors, including the sensor used to initiate emergency reversing. See “Code C20 - Thumb Control Warning”.

Possible Cause/ Corrective Action Check the mechanical portions of the throttle controller. Give special attention to the magnet arm alignment with the ETAC sensors and to the non-metallic parts of the emergency reverser. Bad ETAC.

Code E161

Reason

- Lower Valve Error

Power amplifier could not detect presence of lower valve coil.

Possible Cause/ Corrective Action

Code E200

Lower valve missing. Open or short circuit in lower valve or wiring; master control relay missing or stuck open; main contactor open circuit (especially after it has closed); communication error due to PMT. Allow PMT to reboot before turning truck ON. Bad power amplifier.

- Field Open

Reason Power amplifier detected open field.

Possible Cause/ Corrective Action Open circuit in traction motor field circuit. Check traction motor field wiring and field windings in motor. Harness broken. Bad power amplifier.

00700-CL340-05, Issued: 2 May 20055-15