Error code 7b - Technical Troubleshooting discussion in Forkliftaction's forums

Cat Lift Trucks (& Caterpillar) NRDR30:
Error code 7b

Unit only travels in low speed and displays error code 7b.
Model#NRDR30 S/N--2gl04783

Posted 17 Sep 2013 06:00
Discussion started by mitch

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error 7b - The traction motor analog signal is not within programmed limits.

things to check for:
- Check sensor cable (JPN10) and JPM.
- Check cable from Hydraulic Driver Assembly to Vehicle Manager.
- The temperature sensor may be bad.
- The Hydraulic Driver Assembly may be bad.
- The pressure transducer may be shorted (36 volt only)
- The Vehicle Manager may be bad.

The traction motor temperature sensor or its related wiring and circuitry may not be functioning correctly.
- Run Test A08 - Traction Motor Temperature Voltage

Posted 17 Sep 2013 20:35
Reply by swoop223
North Carolina, United States

You've been swooped!
swoop223@gmail.com

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