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AC500364 AB Solenoid valve B Solenoid valve A Vacuum tank Intake manifold ON-VEHICLE SERVICE FRONT AXLE 26-13 4. Connect the hand vacuum pump to solenoid valve B. Apply negative pressure and carry out the maintained. (2) When battery voltage is applied to solenoid valve B, negative pressure disappears. (3) When battery voltage is applied to solenoid valve A, negative pressure disappears. 5. Measure the resistance of the solenoid valves. Standard value: 36 −46 Ω |