CRUISE CONTROL SWITCH INSPECTION [MAZDA RADAR CRUISE CONTROL (MRCC) SYSTEM]

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Resistance Inspection

Warning

•  Handling the driver-side air bag module improperly can accidentally operate (deploy) the air bag module, which may seriously injure you. Read the service warnings and cautions before handling the air bag module. (See AIR BAG SYSTEM SERVICE WARNINGS.) (See AIR BAG SYSTEM SERVICE CAUTIONS.)

1.  Switch the ignition off.

2.  Disconnect the negative battery terminal and wait for 1 min or more. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

3.  Remove the driver-side air bag module. (See DRIVER-SIDE AIR BAG MODULE REMOVAL.) (See DRIVER-SIDE AIR BAG MODULE INSTALLATION.)

4.  Remove the steering wheel. (See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION.)

5.  Measure the resistance between cruise control switch/clock spring connector terminal 3E and 3A under the following conditions:

•  Resistance with OFF/CANCEL switch pressed and held

?  0 ohms

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•  Resistance with SET - switch pressed and held

?  83.655—85.345 ohms

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•  Resistance with SET + switch pressed and held

?  187.605—191.395 ohms

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•  Resistance with MODE switch pressed and held

?  323.235—329.765 ohms

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•  Resistance with RESUME switch pressed and held

?  501.435—511.565 ohms

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•  Resistance with DISTANCE + switch pressed and held

?  753.885—769.115 ohms

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•  Resistance with DISTANCE - switch pressed and held

?  1,139.985—1,163.015 ohms

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•  Resistance with any switches not pressed

?  3,268.485—3,334.515 ohms

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LED Illumination Inspection

Warning

•  Handling the driver-side air bag module improperly can accidentally operate (deploy) the air bag module, which may seriously injure you. Read the service warnings and cautions before handling the air bag module. (See AIR BAG SYSTEM SERVICE WARNINGS.) (See AIR BAG SYSTEM SERVICE CAUTIONS.)

1.  Switch the ignition off.

2.  Disconnect the negative battery terminal and wait for 1 min or more. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

3.  Remove the driver-side air bag module. (See DRIVER-SIDE AIR BAG MODULE REMOVAL.) (See DRIVER-SIDE AIR BAG MODULE INSTALLATION.)

4.  Remove the steering wheel. (See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION.)

5.  Apply battery positive voltage to cruise control switch terminal 3F, and connect terminal 3B to ground.

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6.  Verify that the LED illuminates.

•  If the LED does not illuminate, replace the cruise control switch.