System Function Test

Actuator on turbocharged models cannot be checked using ACC Tester (49 9200 010). SeeFig 1 . Turbocharged models can be tested with an ohmmeter only. When checking actuator on models with automatic transmission, the checker must be modified by cutting lead wire at terminal No. 6 on ACC checker connector. SeeFig 2 . The main switch, actuator-VAC, actuator-VENT 2, actuator-VENT 1, clutch/brake switch, combination/inhibitor switch (automatic transaxle models), and generator are verified by check lights on tester.

Fig 1: Cruise Control Tester (49 9200 010) During tests, generator light may be on or off.

Fig 2: AAC Tester Modification Procedure

Courtesy of MAZDA MOTORS CORP.

Tester has a check switch and a slide switch. Check switch tests actuator operation with engine running. When switch is held on with engine running, engine speed is increased and held at 2000-3000 RPM. If RPMs do not increase, adjust free play of actuator inner cable. Free play for all models is .004-.012" (1.0-3.0 mm).

Slide switch should be in "L"position.

Fig 3: Inspecting Actuator Solenoid

Courtesy of MAZDA MOTORS CORP.

1. When testing main switch continuity, all lights except clutch/brake switch and combination/inhibitor switch should be off. If all lights are off, check fuse, connectors, ignition, and main switches.
2. To test brake switch continuity, depress brake pedal. All lights except combination/inhibitor and clutch/brake switch should be off. If clutch/brake switch light is off, check switch and wiring.
3. To test clutch switch continuity, depress clutch pedal. All lights except clutch/brake and combination switch should be off. If clutch/brake switch light is off, check switch and wiring.
4. To test "SET", "COAST", or "RESUME" positions of combination switch, turn switch to appropriate position. All lights except clutch/brake and combination switch lights should be off. If combination/inhibitor switch light is off, check appropriate switch position and wiring.
   NOTE: When checking actuator, ensure engine speed increases. If engine speed increases more than 4000 RPM, release switch immediately.
5. Start engine and place shift lever in "N". All lights except clutch/brake and combination switch lights should be off. Test actuator operation by setting slide switch to "L" position. Turn check switch "ON" and hold.
6. Engine speed should increase to 2000-3000 RPM. All lights should be on except main switch. VAC light should flash. To check speed sensor output, raise and support vehicle. Allow engine to idle in first gear. All lights except clutch/brake and combination/inhibitor switch should be off. If generator light does not flash, speed sensor or wiring is faulty.
7. Check actuator solenoid resistance. Resistance should be 25-35 ohms while checking terminals "A-C", "B-C" and "C-D". SeeFig 3 . Actuators on turbocharged 626 models should have about 20 ohms of resistance between terminals "A-C".