Mazdaspeed3
Note. The center roof antenna has a built-in antenna amplifier.
Scheme 37
- Turn the audio unit on and select the radio, then measure the voltage at center roof antenna connector terminal A. If the voltage is B+, go to the «FEEDER LINE INSPECTION»(ref-274460-S12786296282007121800000) . If the voltage is not B+, inspect the audio unit or antenna feeder.
Scheme 38
Scheme 39
- Verify that there is no continuity between the center roof antenna terminals A and E using an ohmmeter.
- Inspect for continuity between the center roof antenna terminals using an ohmmeter. If not as indicated in the table, replace the center roof antenna.
Scheme 40
Scheme 41
- Verify that there is no continuity between the center roof antenna terminals A and C.
- Inspect for continuity between the center roof antenna terminals. If not as indicated in the table, replace the center roof antenna.
Scheme 42
- Disconnect the negative battery cable.
- Remove the following parts: Front scuff plate (Passenger's side) (See «FRONT SCUFF PLATE REMOVAL/INSTALLATION»(ref-274485-S30785211232007121800000) .) Front side trim (Passenger's side) (See «FRONT SIDE TRIM REMOVAL/INSTALLATION»(ref-274485-S23405913072007121800000) .) Decoration panel (See «DECORATION PANEL REMOVAL/INSTALLATION»(ref-274485-S00945702122007121800000) .) Glove compartment (See «GLOVE COMPARTMENT REMOVAL/INSTALLATION»(ref-274485-S41115019472007121800000) .) Car-navigation unit (See «CAR-NAVIGATION UNIT REMOVAL/INSTALLATION»(ref-274460-S22616554862007121800000) ). PJB (See «PASSENGER JUNCTION BOX (PJB) REMOVAL/INSTALLATION»(ref-274501-S23137470742007121800000) .)
- Remove in the order indicated in the illustration.
- Install in the reverse order of removal.
Scheme 43
Scheme 44
Scheme 45
- Verify that there is no continuity between the front antenna feeder terminal A and B.
- Verify that the continuity is as indicated in the table. If not as indicated in the table, replace the front antenna feeder.
Scheme 46
Scheme 47
- Verify that there is no continuity between the front antenna feeder terminal A and B.
- Verify that the continuity is as indicated in the table. If not as indicated in the table, replace the rear antenna feeder No. 1 or No. 2.
Scheme 48
- Disconnect the negative battery cable.
- Remove the driver-side air bag module. (See «DRIVER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION»(ref-274459-S21603135672007121800000) .)
- Remove the steering wheel. (See «STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION»(ref-274450-S03065289442007121800000) .)
- Remove in the order indicated in the illustration.
- Install in the reverse order of removal.
Scheme 49
- install the audio control switch so that the audio control switch wiring harness passes behind the steering wheel as shown in the figure.
Scheme 50
Scheme 51
- Disconnect the negative battery cable.
- Remove the driver-side air bag module. (See «DRIVER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION»(ref-274459-S21603135672007121800000) .)
- Disconnect the audio control switch connector.
- Verify the resistance and continuity between the audio control switch terminals. If the resistance and continuity are not as indicated in the tables, replace the audio control light switch. R: Resistance. See the table. RESISTANCE SPECIFICATION Switch position Resistance (ohm) VOL-button ON 51-56 VOL+ button ON 140-154 AUTO SCAN button ON 286-315 PRESET button ON 534-589 MODE button ON 985-1,080 MUTE button ON 1,940-2,130 OFF 4,800-5,290
Scheme 52
- Disconnect the negative battery cable.
- Remove in the order indicated in the illustration.
- Install in the reverse order of removal.
Scheme 53
- Pry the car-navigation control switch from the console using a flathead screwdriver wrapped with protective tape.
Scheme 54
- Operate the car-navigation control switch and verify that the car-navigation system operates normally. If the system does not operate normally, go to the next step.
- Inspect the wiring harness between the LCD unit and the car-navigation control switch for an open circuit, power short, or a short to ground. If there is any malfunction in the wiring harnesses, repair or replace the applicable wiring harness. If the wiring harnesses are normal, replace the car-navigation control switch.
Scheme 55
- Disconnect the negative battery cable.
- Remove the ashtray panel. (See «CONSOLE REMOVAL/INSTALLATION»(ref-274485-S26173577602007121800000) .)
- Remove in the order indicated in the illustration.
- Install in the reverse order of removal.
Scheme 56
Scheme 57
Scheme 58
- Insert a tape-wrapped flathead screwdriver into the socket hole and push on the ring projection to lift the socket outward.
- Lift out the socket until the ring projection locks into the lower socket hole as shown in the figure.
- From the rear of the ashtray, insert a tape-wrapped flathead screwdriver between the socket and the ring as shown in the figure.
- While lifting the ring projection with the flathead screwdriver, push out and remove the socket.
Scheme 59
- Pull the ring outward while pressing the tabs.