Conditions Which Generate This Code:
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| Illustration 1 | g01315262 |
Schematic of the Laser Receiver. | |
Test Step 1. CHECK THE LASER RECEIVER
- Disconnect the laser reciever harness from the laser receiver.
- Reconnect the laser reciever harness to the laser receiver.
Expected Result:
The diagnostic code indicates that the laser receiver has moved from side to side.
Results:
- YES - The diagnostic code indicates that the laser receiver has moved from side to side.
Repair: Replace the laser receiver.
STOP
- NO - The diagnostic code does not indicate that the laser receiver has moved from side to side. Proceed to Test Step 3
Test Step 2. CHECK THE ELECTRIC MAST
- Disconnect the harness from the electric mast.
- Reconnect the harness to the electric mast.
Expected Result:
The diagnostic code indicates that the electric mast has moved from side to side.
Results:
- YES - The diagnostic code indicates that the electric mast has moved from side to side.
Repair: Repair or replace the electric mast.
STOP
- NO - The diagnostic code does not indicate that the electric mast has moved from side to side. Proceed to Test Step 3
Test Step 3. CHECK THE LASER RECEIVER POWER LED
- Verify that the amber power LED that is located on the laser receiver is illuminated.
Expected Result:
The amber power LED is illuminated.
Results:
- YES - The power LED is ON. Proceed to 8.
- NO - The power LED is not ON. Proceed to Test Step 5
Test Step 4. CHECK FOR VOLTAGE ON ELECTRIC MAST
- Disconnect the cable at the base of the electric mast.
- Check for machine voltage between "pin A" and "pin F" at the harness connector.
- Check for machine voltage between "pin A" and "pin F" at the harness connector box located on the radiator guard housing.
Expected Result:
The voltage is machine voltage.
Results:
- YES - The voltage is machine voltage.STOP
- NO - The voltage is not machine voltage. Proceed to Test Step 6
Test Step 5. CHECK FOR VOLTAGE ON LASER RECEIVER
- Disconnect the 6 pin coil cable from the laser receiver that connects the laser receiver to the base of the electric mast.
- Check for machine voltage between "pin A" and "pin F" of the connector on the cable.
Expected Result:
The voltage is machine voltage.
Results:
- YES - The voltage is machine voltage. Proceed to Test Step 8
- NO - The voltage is not machine voltage. Proceed to Test Step 6
Test Step 6. CHECK FOR VOLTAGE
- Disconnect the cable at the radiator guard housing connector.
- Check for machine voltage between "pin A" and "pin F" at the harness connector box located on the radiator guard housing.
Expected Result:
The voltage is machine voltage.
Results:
- YES - The voltage is machine voltage. Proceed to Test Step 8
- NO - The voltage is not machine voltage. Proceed to Test Step 7
Test Step 7. CHECK FOR VOLTAGE AT THE POWER MODULE
- Disconnect the harness from the output side of the power supply module.
- Check for machine voltage between "pin A" and "pin F" at the connector on the power supply module.
Expected Result:
The voltage is machine voltage.
Results:
- YES - The voltage is machine voltage. Proceed to Test Step 8
- NO - The voltage is not machine voltage.
Repair: Replace the power supply module.
STOP
Test Step 8. INSPECT THE HARNESS.
- Move the "power/setup" switch on the display to the OFF position.
- Turn the key start switch and the disconnect switch to the OFF position.
- Disconnect the harness connectors for the right/left electric mast. Disconnect the harness connectors for the laser receivers.
- Carefully inspect each harness for signs of abrasion, nicks, or cuts.
The following areas are locations that should be checked:
- Exposed insulation
- Points of rubbing wire
- Exposed insulation
- Check the connectors for moisture or corrision.
Note: If corrosion is evident on the contacts or the connector, use only denatured alcohol to remove the corrosion. Use a cotton swab or a soft brush to remove the corrosion. Do not use cleaners that contain trichloro-ethylene because trichloro-ethylene may damage the connector.
Expected Result:
The "AccuGrade Laser" system harnesses should be free of corrosion, moisture, abrasion.
Results:
- OK - The "AccuGrade Laser" system harnesses are free of corrosion, moisture, abrasion. Proceed to terst step 9
- NOT OK - A problem exists with the connector, the wiring or the wiring harness.
Repair: Repair the "AccuGrade Laser" system harness or replace the "AccuGrade Laser" system harness.
Proceed to Test Step9
Test Step 9. CHECK THE TERMINATION RESISTOR.
- The key start switch and the disconnect switch remain in the OFF position.
- The AccuGrade Laser system harness remains disconnected from all electronic control devices that use the CAN datalink.
- Disconnect the connector from the termination resistor.
- Measure the resistance across contact A (wire F711-YL) and contact B (wire F712-GN). Note the resistance.
Expected Result:
The resistances measured are 120 ± 12 ohms.
Results:
- YES - The resistances measured are 120 ± 12 ohms. Reconnect the resistors. Proceed to Test Step10
- NO - One or both resistances measured is NOT 120 ± 12 ohms.
Repair: Replace the termination resistor(s) that did not measure 120 ± 12 ohms.
STOP
Test Step 10. CHECK IF THE DIAGNOSTIC CODE REMAINS
- Reconnect the AccuGrade Laser system harnesses to the electric masts
- Reconnect the AccuGrade Laser system harnesses to the receivers.
- Turn the key start switch and the disconnect switch to the ON position.
- Move the "power/setup" switch on the AccuGrade Laser display to the ON position.
Expected Result:
The diagnostic code is no longer active.
Results:
- OK - The diagnostic code is no longer active. The initial diagnostic code was probably caused by a poor elelctrical connection and/or a short at one of the harness connectors that was disconnected and then reconnected. Resume normal machine operation.STOP
- NOT OK - The diagnostic code is still active.
Repair: Contact your dealership's Technical Communicator for a possible consultation with AVSpare.
STOP