Model 4700 Maintenance Manual

Section 6.Messages and Codes

Fault Codes

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

Code Description

92 Code 92: Communication Error Detected By The VM

The VM has not received information from the PPA, TPA, or Armrest Board.

93 Code 93: Communication Error

Detected By The VM

The VM has not received information from the Operator Display.

94 Code 94: Internal Fault

Notes/Corrective Action

Check power to TPA, PPA, and Armrest Board. Check power cable connections to the TPA, PPA, and motors for continuity and correct torque. Check motor encoders, temperature sensors, and connections. Check communication wires between VM, TPA, PPA, and Armrest Board for continuity and shorts to frame. Check PPA for correct configuration jumper application. Refer to “Electrical Jumpers” on page7-49 . If OK, replace the VM.

Check power to TPA, PPA, VM, HCB, and Operator Display. Check communication wires between VM and Display for continuity and shorts to frame. If OK, replace the Operator Display.

The VM has detected an internal fault. Replace the VM.

96 Code 96: VM Internal Fault

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

97 Code 97: Jumper Configuration Error

The jumper between JBP-1 and 2 on the PPA (determines motor size) was detected in the wrong position for the truck model. If not in place, the VM defaults to model 470-C30.

A1 Code A1: Hydraulic Control Board Internal Fault

Fault in the area of memory where the adjustable parameters are stored on the Hydraulic Control Board.

A2 Code A2: Solenoid Valve Error

A short was detected in the circuits between the 5th Solenoid Valve (EV11) and the Hydraulic Control Board.

Verify battery voltage. If wrong voltage, set correct voltage via FlashWare (and re-Learn pots) or install correct voltage battery. Check for shorts to frame. If code does not clear by cycling Key switch, replace the VM. If code clears, the adjustable parameters have been reset to default values and require resetting to customer’s requirements via FlashWare. Re-Learn all pots.

Verify the jumper is in place on models 470-C40 and 470-C50HM. The jumper should not be installed on model 470-C30. Verify correct PPA is installed.

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

Measure voltage and resistance across coil. If OK, replace the Hydraulic Control Board.

Publication 1160093, Issued: 20 May 2013 6-23

Section 6.Messages and Codes

Fault Codes 6-24

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

A3 Code A3: CAN-Bus Error Detected by Hydraulic Control Board

The Hydraulic Control Board has not received CAN messages from the VM, PPA, TPA, or Armrest Board.

A4 Code A4: Internal Hydraulic Control Board Fault Problem in the hardware circuit.

A6 Code A6: Solenoid Valve Error

A short was detected in the circuits between the Lifting Valve (EV2) and the Hydraulic Control Board.

A7 Code A7: Solenoid Valve Error

A short was detected in the circuits between the Tilting Valves (EV3 or 4) and the Hydraulic Control Board.

A8 Code A8: Solenoid Valve Error

A short was detected in the circuits between the Sideshift valves (EV5 or 6) and the Hydraulic Control Board.

A9 Code A9: Solenoid Valve Error

A short was detected in the circuits between the 4th Function valves (EV7 or 8) and the Hydraulic Control Board.

AA Code AA: Incorrect Battery Installed When the Key switch is turned ON, the Hydraulic Control Board checks the battery voltage and compares it with the "SET BATTERY" parameter setting. If the actual voltage is 20% higher or lower than the set value, this code is displayed.

Notes/Corrective Action

Check power to TPA, PPA, VM, and HCB. Check communication wires between all modules for continuity and shorts to frame. If OK, replace the Hydraulic Control Board.

Replace the Hydraulic Control Board.

Measure voltage and resistance across coil. If OK, replace the Hydraulic Control Board.

Measure voltage and resistance across coil. If OK, replace the Hydraulic Control Board.

Measure voltage and resistance across coil. If OK, replace the Hydraulic Control Board.

Measure voltage and resistance across coil. If OK, replace the Hydraulic Control Board.

Check battery voltage. Set correct battery voltage via FlashWare and re-Learn pots or install correct battery. If OK, replace the Hydraulic Control Board.

Publication 1160093, Issued: 20 May 2013