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Mazda RX7. Manual - part 2

INSTRUMENT PANEL - STANDARD

Article Text

1983 Mazda RX7

For www.iluvmyrx7.com

Sunday, August 26, 2001 03:29PM

ARTICLE BEGINNING

Switches & Instrument Panels
MAZDA

DESCRIPTION & OPERATION

All models have a steering column mounted combination switch
to control turn signals, headlights and wipers. The instrument
cluster contains a speedometer, fuel gauge and water temperature
gauge.
Some models also have a tachometer, voltmeter and oil
pressure gauge. The fuel and temperature gauges operate on 7 volts,
supplied by a cluster-mounted voltage regulator. The sending units
are variable-resistance type and have the same resistance values on
all models.

TESTING

GAUGES

1) Turn ignition on. If gauge needles do not move at all,
check for blown fuse or broken power wire. If both gauges are
inoperative, voltage regulator may be the cause. If only one gauge
does not work, the gauge, sending unit, or connecting wiring may be
at fault.
2) To test temperature gauge, disconnect sending unit wire.
Connect a resistor between wire and ground, then check gauge reading.
Change resistance and recheck. If gauge readings are as shown in
tables, replace sending unit. If not, repair wiring or replace gauge.
3) To test fuel gauge, disconnect wire to sending unit at
fuel tank (all except GLC Wagon) or unplug connector behind left kick
panel (GLC Wagon). Connect resistor between Yellow wire and ground.
Check gauge reading.

NOTE: Allow 2 minutes for gauge reading to stabilize. It should be
within 1 pointer width of line on gauge face. See Fig. 1.

4) If gauge readings are incorrect, replace gauge. If
readings are okay, test in-tank sending unit before replacing it.
Resistance should measure 0-5 ohms with float raised, and 103-117
ohms with float lowered. If not, replace sending unit.

RESISTANCES FOR FUEL GAUGE TESTING

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Needle Position Test Resistor

Full Line ............................................... (1) 7 ohms
Half Tank .................................................. 33 ohms
Empty Line ............................................. (2) 95 ohms

INSTRUMENT PANEL - STANDARD

Article Text (p. 2)

1983 Mazda RX7

For www.iluvmyrx7.com

Sunday, August 26, 2001 03:29PM

(1) - On Pickup, 3 ohms.
(2) - On Pickup, 110 ohms.

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RESISTANCES FOR TEMPERATURE GAUGE TESTING

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Model Cold Line Hot Line
GLC Wagon & 626 ........... 233 ohms ..................... 16 ohms
RX7 ....................... 104 ohms ..................... 21 ohms
GLC ....................... 154 ohms ..................... 12 ohms

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REMOVAL & INSTALLATION

INSTRUMENT CLUSTER

Removal (GLC Hatchback)
Disconnect battery ground. Remove steering wheel. Remove
meter hood by moving it up and down with hands. Disconnect
speedometer cable and remove 4 cluster screws. Pull cluster back and
unplug wiring.

Installation
To install, reverse removal procedure.

Removal (GLC Wagon)
1) Disconnect battery ground. Place a strip of masking tape
along edge of instrument panel under cluster to protect finish.
Remove 2 screws and meter hood.
2) Remove 1 screw at left end of center panel, then unsnap
panel. Remove 3 screws under edge of dashboard cover and remove
cover. Remove 3 cluster screws, disconnect speedometer cable and
wires and remove cluster.

Installation
To install, reverse removal procedure.

Removal (Pickups & 626)
Disconnect battery ground. Remove steering wheel and column
cover. Disconnect speedometer cable. Remove cluster hood and mounting
bolts. Pull cluster back, unplug wiring and remove cluster.

Installation
To install, reverse removal procedure.

Removal (RX7)
Disconnect battery ground. Remove steering wheel. Remove 2
screws and cluster cover. Remove cluster attaching screws. Disconnect
speedometer cable and pull cluster back. Unplug wiring and remove
cluster.

Installation

INSTRUMENT PANEL - STANDARD

Article Text (p. 3)

1983 Mazda RX7

For www.iluvmyrx7.com

Sunday, August 26, 2001 03:29PM

To install, reverse removal procedure.

COMBINATION SWITCH

Removal
Disconnect battery ground. Remove steering wheel. Remove
column covers and snap ring at top of column (if equipped). Unplug
wiring connectors. Loosen combination switch screw. Remove switch.

Installation
To install, reverse removal procedure.

Fig. 1: Gauge Testing Needle Locations.
Needle should indicate proper reading when test resistor is connected.

END OF ARTICLE

WIPER/WASHER SYSTEM

Article Text

1983 Mazda RX7

For www.iluvmyrx7.com

Sunday, August 26, 2001 03:29PM

ARTICLE BEGINNING

1983 Wiper/Washer Systems
MAZDA

DESCRIPTION

All models have a 2-speed wiper motor with intermittent wipe
feature. GLC and RX7 models may be equipped with a rear window
wiper/washer system. The wiper switch for GLC Wagon is a lever on the
left side of the steering column.
On all other models wiper lever is on the right side of
column. A time delay relay is used to control the intermittent cycle
on all except RX7 models. On RX7, wipers are timed by the "Control
Processing Unit" that also operates a number of other accessories.

OPERATION

GLC WAGON

The wiper speeds are controlled by twisting the lever to the
left of the steering column. The washer is operated by pressing in on
the end of the lever. The rear wiper on GLC Wagon is turned on by
pulling out the dash-mounted switch, while the washer operates when
the switch is turned.

ALL OTHER MODELS

The wipers are controlled by a lever on the right side of
the steering column. As the lever is moved down, it switches the
wipers to intermittent, low speed and high speed. If the lever is
pulled toward the steering wheel, the washer sprays.
If the lever is pushed away from the steering wheel, the
wipers sweep until it is released. The rear wiper/washer on GLC
Hatchback is controlled by a rocker switch on the instrument panel.
The RX7 rear wiper switch is on the console.

TESTING

WIPER MOTOR

1) Remove wiper motor from vehicle. Connect jumper wires to
connector at motor to check both speeds. For low speed, connect
battery voltage to Blue wire terminal and ground the Blue/White
terminal. For high speed, ground the Blue/Red terminal instead.
2) To check the park switch, apply battery voltage to the
Blue wire terminal. Connect a jumper wire between Blue/White and
Blue/Black. Ground the Black wire. Motor should run briefly and stop.

MAZDA INTERMITTENT WIPER RELAY LOCATIONS

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