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ON-VEHICLE SERVICE TSB Revision FRONT AXLE 26-17 3. Connect a hand vacuum pump to solenoid valve A and carry out the following inspections. (1) Even if the hand pump is operated with no other operation, no negative pressure develops. (2) Negative pressure does not develop when battery voltage is applied to solenoid valve A. Negative pressure (3) When battery voltage is applied to solenoids A and B, negative pressure is maintained. 4. Connect the hand vacuum pump to solenoid valve B. Apply negative pressure and carry out the following inspections. (1) With no change, negative pressure is maintained. vacuum shuts off. (3) When battery voltage is applied to solenoid valve A, the vacuum shuts off. 5. Measure the resistance of the solenoid valves. Standard value: 36 − 46 Ω [at 20°C (68°F)] ACX00969 AB CHECK VALVE VACUUME SOLENOID SOLENOID VACCUM ACX00970 AB CHECK VACUUME TANK SOLENOID SOLENOID |