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| Illustration 1 | g01448591 |
Schematic of the Secondary Steering | |
The CID 0795 FMI 07 diagnostic code can only be recorded if the optional secondary steering system is installed and the machine is moving. The ECM determines that the machine is moving via the transmission output speed sensor. The CID 0795 FMI 07 diagnostic code can only be recorded when the relay for secondary steering is energized. When the machine is at rest, this diagnostic code will always be inactive.
Test Step 1. CHECK THE SYSTEM DURING THE SELF TEST.
Turn the key start switch to the ON position. Wait for the completion of the self test of the instrument cluster. Then, the secondary steering system performs a self test. For 3 seconds, the secondary steering light should illuminate and the wheel is able to be turned.
Expected Result:
The secondary steering light illuminates and the wheel is able to be turned.
Results:
- LIGHT OK, WHEEL TURNS - The secondary steering light illuminates and the wheel is able to be turned. Operate the machine. Look for the diagnostic code.STOP
- NO LIGHT, NO WHEEL - The secondary steering light does not illuminate, and the wheel will not turn during the self test. Proceed to Test Step 2.
- NO LIGHT, WHEEL TURNS - The secondary steering light does not illuminate but the wheel is able to be turned during the self test. Troubleshoot the secondary steering pressure switch.
- LIGHT OK, NO WHEEL - The secondary steering light illuminates but the wheel does not turn during the self test. Troubleshoot the secondary steering pressure switch.
Test Step 2. CHECK THE CABLES FOR THE SECONDARY STEERING MOTOR.
- Turn the disconnect switch to the ON position.
- At the secondary steering motor, check the black ground cable. Check the red power cable that connects the relay to the +battery terminal of the starter. Check the red power cable that connects the other side of the relay to the secondary steering motor.
Expected Result:
The cables are properly connected and the cables are not damaged.
Results:
- OK - The cables are properly connected and the cables are not damaged. Proceed to Test Step 3.
- NOT OK - The cables are improperly connected or the cables are damaged.
Repair: Replace the cables.
STOP
Test Step 3. CHECK THE SECONDARY STEERING MOTOR.
- The disconnect switch remains ON and the engine remains OFF.
- At the secondary steering motor, connect a jumper cable from the negative battery post to the negative battery terminal of the motor.
- At the secondary steering motor, briefly connect a jumper cable from the +battery to the +battery terminal of the motor.
Expected Result:
The secondary steering motor turns normally.
Results:
- OK - The secondary steering motor turns normally. Proceed to Test Step 4.
- NOT OK - The secondary steering motor turns normally.
Repair: The secondary steering motor has failed. Repair the motor or replace the motor.
STOP
Test Step 4. CHECK THE RELAY AT THE SECONDARY STEERING MOTOR.
- The disconnect switch remains ON and the engine remains OFF.
- At the relay by the secondary steering motor, connect a jumper wire from the +battery to wire 727-GN.
- At the relay by the secondary steering motor, connect a jumper wire from the negative battery post to wire 200-BK.
Expected Result:
The relay energizes and the secondary steering motor turns on.
Results:
- OK - The relay energizes and the secondary steering motor turns on. Proceed to Test Step 5.
- NOT OK - The relay does not energize and the secondary steering motor does not turn on. The relay has failed.
Repair: Replace the relay.
STOP
Test Step 5. CHECK THE WIRE FROM THE ECM TO THE RELAY ON THE SECONDARY STEERING MOTOR.
- Turn the key start switch and the disconnect switch to the OFF position.
- Disconnect the machine harness connector J2 from the power train ECM.
- Connect one lead from a multimeter to wire 727-GN at the relay by the secondary steering motor.
- At the machine harness connector J2, connect the other lead from the multimeter to contact J2-9.
- Measure the resistance of wire 727-GN from the ECM to the relay.
Expected Result:
The resistance is less than 5 ohms.
Results:
- OK - The resistance is less than 5 ohms. Proceed to Test Step 6.
- NOT OK - The resistance is greater than 5 ohms. The wire has failed.
Repair: Repair the wiring harness or replace the wiring harness.
STOP
Test Step 6. CHECK THE GROUND CIRCUIT OF THE RELAY AT THE SECONDARY STEERING MOTOR.
- The disconnect switch remains in the OFF position.
- At the relay by the secondary steering motor, connect one lead from a multimeter to the terminal for wire 200-BK.
- Measure the resistance to frame ground.
Expected Result:
The resistance is less than 5 ohms.
Results:
- OK - The resistance is less than 5 ohms. Proceed to Test Step 7.
- NOT OK - The resistance is over 5 ohms. The ground circuit for the relay has failed.
Repair: Repair the ground circuit (wire 200-BK).
STOP
Test Step 7. CHECK THE SIGNAL WIRE BETWEEN THE TWO RELAYS.
- At the relay by the secondary steering motor, connect one lead from the multimeter to the signal wire (727-GN).
- Connect the other lead from the multimeter to the secondary steering intermediate relay (contact 4).
- Measure the resistance between the two relays.
Expected Result:
The resistance is less than 5 ohms.
Results:
- OK - The resistance is less than 5 ohms. Proceed to Test Step 8.
- NOT OK - The resistance is over 5 ohms. The circuit has failed.
Repair: Repair the wiring harness or replace the wiring harness.
STOP
Test Step 8. CHECK THE +BATTERY CIRCUIT AT THE SECONDARY STEERING RELAY.
- Reconnect the machine harness connector to the connector J2 of the power train ECM.
- Turn the disconnect switch to the ON position and turn the key start switch to the ON position.
- At the secondary steering relay, connect one lead from the multimeter to contact 1 (wire 136-GN).
- Measure the voltage from contact 1 to frame ground. Note the voltage.
Expected Result:
The voltage measurement is equal to system voltage.
Results:
- OK - The voltage measurement is equal to system voltage. Proceed to the next Test Step.
- NOT OK - The voltage measurement is NOT equal to system voltage. The power circuit to the relay has failed.
Repair: Repair the wiring harness or replace the wiring harness.
STOP
Test Step 9. CHECK THE CIRCUIT FROM THE ECM TO THE RELAY.
- Turn the key start switch to the OFF position.
- Connect one end of a jumper wire to contact C2 at the relay.
- Connect the other end from the jumper wire to frame ground.
- Turn the key start switch to the ON position. During the self test for the secondary steering system, monitor the indicator for the secondary steering system.
Expected Result:
During the self test, the indicator for the secondary steering system illuminates.
Results:
- OK - During the self test, the indicator for the secondary steering system illuminates. Proceed to Test Step 10.
- NOT OK - During the self test, the indicator for the secondary steering system does not illuminate. The relay has failed.
Repair: Replace the secondary steering relay.
STOP
Test Step 10. CONTINUATION OF THE CHECK FROM THE CIRCUIT OF THE ECM TO THE RELAY.
- Turn the key start switch to the OFF position.
- Remove wire K748-OR from contact J2-9 at the ECM.
- By using a jumper wire, connect wire K748-OR to frame ground.
- Turn the key start switch to the ON position. During the self test for the secondary steering system, monitor the indicator for the secondary steering system.
Expected Result:
During the self test, the indicator for the secondary steering system illuminates.
Results:
- OK - During the self test, the indicator for the secondary steering system illuminates. The ECM may have failed.
Repair: It is unlikely that the ECM has failed. Exit this procedure and perform this procedure again. If the cause of the problem is not found, replace the ECM. See Testing and Adjusting, "Electronic Control Module (ECM) - Replace".
STOP
- NOT OK - During the self test, the indicator for the secondary steering system does not illuminate. Wire K748-OR has failed.
Repair: Repair the wire or replace the wire.
STOP