Component Testing

Test RX7 system with ACC Checker (49 9200 010). See Fig 1 . Items (main switch, actuator-VAC, actuator-VENT 2, actuator-VENT 1, clutch/brake switch, combination/inhibitor switch and generator) are verified by check lights on checker.

Fig 1: RX7 Cruise Control Checker During tests, generator light may be on or off.

Checker also has 2 switches, a check switch and slide switch. Check switch checks actuator operation with the engine running. When this switch is held on with engine running, engine RPM is increased and held to 2000-3000. If RPMs do not come up, adjust free play of actuator inner cable. Free play is .28-.51" (7-13 mm) for 12A engines and .24-.43" (6-11 mm) for 13B engines. Slide switch should be moved to the "H" position before check switch is used.

1. When testing main switch continuity, all lights except clutch/brake switch and combination/inhibitor switch should be on. If all lights are off, check fuse, connectors, ignition and main switches.
2. To test inhibitor switch continuity, depress brake pedal and shift into "D". See step 1) for correct lighting response. If combination/inhibitor light is on, check wiring and switch.
3. To test brake switch continuity, shift lever to "D" and depress brake pedal. All lights except combination/inhibitor switch should be on. If clutch/brake switch light is off, check this switch and wiring.
4. To test clutch switch continuity, depress clutch pedal. See step 3) for correct lighting response. If clutch/brake switch light is out, check clutch switch and wiring.
5. To test "SET", "COAST" or "RESUME" position of combination switch, shift lever to "D" and turn switch to appropriate position. Clutch/brake switch light should be off. If combination inhibitor switch light is off, check appropriate switch and wiring.
6. Start engine and put shift lever to "N". For automatic transmission, all lights except combination/inhibitor switch should be on. For manual transmission, this light should be off. Test actuator operation by setting slide switch "H". Then turn check switch "ON" and hold.
7. Engine speed should increase to 2000-3000 RPM, and all lights should be out except combination/inhibitor switch (automatic transmissions only. On manual transmission light will be on). VAC light should go from off to on.
8. To check speed sensor output, drive vehicle slowly. All lights except clutch/brake and combination/inhibitor switch should be on. If generator light does not flash, speed sensor or wiring is faulty. If no abnormalities exist when using Checker, replace cruise control unit.