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ELECTRIC CIRCUIT
CASE TRAINING CENTER
AUGUST 2000
Protection by power transistor
To protect the circuits of the main electronic control box in the event of a short-circuit of a solenoid valve or a
relay, the power transistors cut off the electrical supply and the message “ELEC. PROBLEM” appears on the
instrument panel control screen. Use the diagnostic mode to locate the short-circuit.
Check the wiring and the components of the affected circuit.
Con-
nector
Path Functions
CN5 8 Power boost solenoid valve
CN6 20 swing cancellation solenoid valve
CN6 26 Battery relay
CN6 29 Swing brake solenoid valve
CN6 30 Travel speed solenoid valve
CN6 31 Shock absorbing solenoid valve
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