TRANSMISSION AND TORQUE CONVERTER CD3340B/YB4411
7-18
Published 04/07/2015 Control # 569-00
Checking for (+ V) Supply to Solenoids
1. Chock all four tires, or lower all outriggers.
2. Disable the machine neutral start protection to prevent
the engine from starting. This can be accomplished by
removing the neutral start relay located beneath the
dash. See Figure 7-10.
3. Turn the ignition switch to the ON position. Do not set the
parking brake as this dumps the transmission to a
neutral state.
4. Select the desired gear on the shift control lever.
5. Identify the two solenoids which give the required gear
from Figure 7-9.
6. Remove the electrical connector on the solenoids
relating to gear selection.
7. Test across the connector terminals with a test lamp or
voltmeter.
NOTE: When using a voltmeter for the above check, the
following results can be seen.
Energized solenoid (ON) = full battery charge
De-energized solenoid (OFF) = reduced voltage
(Typically 5 - 9 V)
This reduced voltage should not be interpreted as a
problem. When an electrical load is placed across
the terminals this voltage drops to zero.
Checking the Instrument Panel Harness
NOTE: The following checks should be carried out with the
parking brake DISENGAGED.
1. Chock the four tires, or lower all outriggers.
2. Disable the machine neutral start protection to prevent
the engine from starting. This can be accomplished by
removing the neutral start relay located beneath the
dash. See Figure 7-10.
3. Disconnect the instrument panel wire harness from the
ECU. The instrument panel wire harness connector is
the larger of the two ECU connectors.
4. Check the condition of the connector and socket for
signs of water entry. Check the condition of the rubber
seal in the instrument panel wire harness connector.
5. Turn the ignition switch to the ON position. Do not set the
parking brake as this dumps the transmission to the
neutral state.
6. Test the voltages on the pins in the harness connector
(DO NOT check the ECU pins) using a test lamp or
voltmeter. See Figure 7-2 for pin identification.
7. If the lamp illuminates, or the voltmeter shows full
battery charge, where indicated in the table, then the
integrity of the harness and power supply to the ECU is
verified.
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