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

AB Code AB: Hydraulic Control Board Driver Fault

The positive supply to the valves is shorted or open.

AC Code AC: Solenoid Group 1 Driver Error

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

AD Code AD: Solenoid Group 2 Driver Error

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

AE Code AE: Solenoid Group 3 Driver Error

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

AF Code AF: Solenoid Group 4 Driver Error b.0 Code b.0: Coil Shorted b.1 Code b.1: Hydraulic Control Board Power Supply Failure

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

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

Low voltage is seen at the Hydraulic Control Board.

Notes/Corrective Action

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.

Verify battery voltage. If wrong voltage, set correct voltage via FlashWare (and re-Learn pots) or install correct voltage battery. 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 for B+ to Hydraulic Control Board. If present, replace Hydraulic Control Board. If not present, check circuit from the Hydraulic Control Board back to CT1.

Publication 1160093, Issued: 20 May 2013 6-25

Section 6.Messages and Codes

Fault Codes 6-26

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 b.2 Code b.2: EVP Driver KO b.3 Code b.3: EV11 Driver KO b.4 Code b.4: Internal Hydraulic Control Board Fault Internal failure of Hydraulic Control Board. b.5 Code b.5: EVP Driver Shorted

An open was detected in the circuits between the Drain valve (EVP) and the Hydraulic Control Board.

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

A short was detected in the circuits between the Drain valve (EVP) and the Hydraulic Control Board.

C1 Code C1: Open in Brake Light Circuit

An open was detected in the brake light circuit.

C2 Code C2: Open in Fore or Aft Working Light Circuits

An open was detected in the fore/aft working light circuits.

C3 Code C3: Open in Fore/Aft Working Light or Brake Light Circuits

An open was detected in the fore/aft working light or brake light circuits.

C4 Code C4: Open in Tail Light Circuits

An open was detected in both reverse light circuits.

Notes/Corrective Action

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.

Replace Hydraulic Control Board.

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

Check bulbs.

Check for voltage to both lights.

Check bulbs. Check for voltage to both lights.

Check bulbs. Check for voltage to lights.

Check bulbs. Check for voltage to both lights.

Publication 1160093, Issued: 20 May 2013