Section 6.Messages and Codes

Fault Codes

Model 4700 Maintenance Manual

Refer to the “Pinout Matrix” located in Theory of Operation section for all voltage and resistance values and component interconnection.

Code Description

61 Code 61: Slave TPA Internal Fault

The Slave TPA has detected an internal fault.

62 Code 62: Slave TPA Internal Fault

Fault in the area of memory where the adjustable parameters are stored.

63 Code 63: Slave TPA Internal Fault

The power amplifier has detected an internal fault.

64 Code 64: Slave TPA Internal Fault

Correct current draw by the motor is not seen by the TPA.

65 Code 65: Slave TPA Detected Battery Sense Out-of-Range

The Slave TPA monitors the battery voltage at B+Key. If voltage does not match configured voltage or is below set threshold, this code is displayed. The TPA also monitors the voltage on its internal capacitors. If voltage goes above 63VDC, this code is displayed.

Notes/Corrective Action

Check voltage to the TPA. If OK, replace the TPA.

If code does not clear by cycling Key switch, replace the TPA. If code clears, the adjustable parameters have been reset to default values and require resetting to customer’s requirements via FlashWare.

Check voltage to the TPA. If OK, replace the TPA.

Check voltage to the TPA. Check motor cables for continuity and correct torque. Compare current from all 3 phases. If one phase is significantly higher or lower than the other two, replace the motor. If OK, replace the TPA.

Verify battery voltage. If wrong voltage, set correct voltage via FlashWare (and re-learn pots) or install correct voltage battery. If battery is correct but voltage is >63VDC, replace battery. Test the power cables to the motor for shorts to the truck frame and the other cables. Test the motor for shorts to frame. Resistance must be >1Megohm. If OK, replace the TPA.

66

When the Key switch is turned ON, the Slave TPA momentarily powers each motor phase and monitors current. If current is seen when it should not be, this code is displayed.

67 Code 67: Open in Slave TPA

When the Key switch is turned ON, the Slave TPA monitors each motor phase for current draw. If current is not seen when it should be, this code is displayed.

6-18

Measure voltage and resistance across coil. Check cables to the motor and TPA for continuity and correct torque. Swap the connections from the TPA to the other traction motor using appropriately sized jumper cables and turn the Key switch ON. If code changes, replace the motor. If the code is still displayed, replace the TPA.

Check voltage to the TPA. Check cables to the motor and TPA for continuity and correct torque. Swap the connections from the PPA and pump motor with the TPA and traction motor using appropriately sized jumper cables and turn the Key switch ON. If code changes, replace the motor. If the code is still displayed, replace the TPA.

Publication 1160093, Issued: 20 May 2013