1992 MAZDA PROTEGE Workshop Manual

INSTRUMENT CLUSTER
Symptom: Speedometer does not operate or indication is not correct.
9MUOTX-066
I 9MUOTX-067
Step 1
Verify that the speedometer cable is connected properly.
If the connections are OK, go to Step 2.
Step 2 - Check speedometer cable
1. Disconnect the speedometer cable from the instrument clus-
ter and transmission case.
2. Verify that the cable and gear spin easily when turned by
hand.
3. If the cable or gear is stiff, replace the speedometer cable
or gear.
4. If the speedometer cable and gear are OK, replace the
speedometer.
QMUOTX-068
T-65

T INSTRUMENT CLUSTER
Symptom: Tachometer does not operate.
9MUOTX.069
TEST TACHOMETER
23UOTX-040
2E 2G SMUOTX-01
Step 1
1. Remove the instrument cluster. (Refer to page T-69.)
2. Connect a test tachometer between terminals 2E and 2G
of the harness side connector.
Step 2
1. Start the engine.
2. Check that the test tachometer indicates engine speed.
Indicates rpm
Yes
No Action
Replace tachometer
Repair wiring harness
(Instrument cluster - Igniter)
T-66

INSTRUMENT CLUSTER T
Symptom: Water temperature gauge does not operate.
9MUOTX-072
W/ TACHO W/O TACHO
OSUOTX-111
0
23UOTX-041
WI TACHO
W/O TACHO
9MUOTX-076
Step 1
1. Disconnect the connector from the water thermosensor.
2. Connect the red lead of the
SST to the connector and the
black lead to a body ground.
3. Set the
SST to the resistance values shown in the figure.
4. Turn the ignition switch ON, and check that the needle in-
dicates the correct values.
Gauge displays correct Action
Yes Replace water therm0 sensor
No Go to Step 2
Caution
l Continue the above checks for at least two minutes
each to correctly judge the condition.
l The allowable indication error is twice the width of
the needle.
Step 2
1. Remove the instrument cluster. (Refer to page T-69.)
2. Apply battery voltage to terminal 2L and ground terminal 2E.
3. Connect the red lead of the
SST to terminal 3L and the black
lead to a negative battery terminal.
4. Set the
SST to the resistance values shown in the figure.
5. Verify that the needle indicates the correct values.
Indicates correct
Yes Action
Repair wiring harness
(instrument cluster - Water thermosensor)
I--~ No I ReDlace water temperature gauge
I
Caution
l Continue the above checks for at least two minutes
each to correctly judge the condition.
l The allowable indication error is twice the width of
the needle.
T-67

T INSTRUMENT CLUSTER
Symptom: Fuel gauge does not operate.
SMUOTX-077 -_d
,
1
OBUOTX-186
W/ TACHO W/O TACHO
7R 7cl
9MUOTX-079
23UOTX-04:
WI TACHO W/O TACHO
7Q 7cl
Step 1
1. Disconnect the connector from the fuel gauge sender unit.
2. Connect the red lead of the SST to the terminal-wire (Y) and
the black lead to a body ground.
3. Set the SST to the resistance values shown in the figure.
4. Turn the ignition switch ON, and verify that the needle indi-
cates the correct values.
Indicates correct Action
Yes Replace fuel gauge sender unit (in fuel tank)
/
No Go
to Step 2
Caution
l Continue the above checks for at least two minutes
each to correctly judge the condition.
l The allowable indication error is twice the width of
the needle.
Step 2
1. Remove the instrument cluster. (Refer to page T-69.)
2. Apply battery voltage to terminal 2L and ground terminal 2E.
3. Connect the red lead of the SST to terminal 1C and the
black lead to a negative battery terminal.
4. Set the SST to the resistance values shown in the figure.
5. Verify that the needle indicates the correct values.
Indicates correct Action
Yes Repair wiring harness
(Instrument cluster - fuel gauge sender unit)
No Replace fuel gauge sender unit
Caution
. Continue the above checks for at least two minutes
each to correctly judge the condition.
l The allowable indication error is twice the width of
the needle. .-/

INSTRUMENT CLUSTER
INSTRUMENT CLUSTER AND SPEEDOMETER CABLE
Removal / Installation
1. Remove in the order shown in the figure.
2. Install in the reverse order of removal.
1. Meter hood
3. Instrument cluster
23UOTX-04
...
2. Speedometer cable Troubleshooting
.......................... page T-64
Inspection ................................... page T-66
Disassembly / Assembly .............
page T-70
Inspection ...................................
page T-71
T-69

T INSTRUMENT CLUSTER
WITH TACHOMETER
WITHOUT TACHOMETER
Disassembly / Assembly
03UOTX.11
T-70

INSTRUMENT CLUSTER T
(For Canada)
(For USA)
11
OSUOTX-114
Standard Indication
(rpm)
1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000 Allowable range
@pm)
880-l ,060
1,970-2,150
3,000-3,180
4,000-4,240
5,000-5,300
6,000-6,360
7.000-7.420
8:600-8:480
03UOTX-11 5
I 23UOTX-044 WI TACHO WIO MACHO
32.50
ssn
9MUOTX-087
Inspection
Speedometer
1. Using a speedometer tester, check the speedometer for ai-
lowable indication error, and check the operation of the
odometer. Replace if necessary.
2. Check the speedometer for fluctuation and/or abnormal
noise.
Caution
l If significant fluctuation occurs or the speedome-
ter does not move at all, remove the speedometer
cable. If it is normal, replace the speedometer as-
sembly.
l Tire wear and improper inflation will Increase
speedometer error.
Tachometer
1. Connect a test tachometer to the engine, and start the
engine.
2. Check the tachometer for allowable indication error. Replace
if necessary.
Caution
l When removing or installing the tachometer, do not
drop it or subject it to sharp shocks.
Fuel gauge
1. Remove the instrument cluster. (Refer to page T-69.)
2. Apply battery voltage to terminal 2L and ground terminal 2E.
3. Connect the red lead of the
SST to terminal 1C and the
black lead to a negative battery terminal.
4. Set the
SST to the resistance values shown in the figure.
5. Verify that the needle indicates the correct values.
Caution
l Continue the above checks for at least two minutes
each to correctly judge the condition.
l The allowable indication error is twice the width of
the needle.
T-71

T INSTRUMENT CLUSTER
I
23UOTX-045
W/ TACHO WI0 TACHO
QMUOTX-08!
03UOTX- 11,
03UOTX.11
OBUOTX-
T-72
Water temperature gauge
1. Remove the instrument cluster. (Refer to page T-69.)
2. Apply battery voltage to terminal 2L and ground terminal 2E.
3. Connect the red lead of the SST to terminal 3L and the black
lead to a negative battery terminal.
____,
4. Set the SST to the resistance values shown in the figure.
5. Turn the ignition switch ON, and verify that the needle indi-
cates the correct values.
Cautlon
l Continue the above checks for at least two minutes
each to correctly judge the condition.
l The allowable indication error is twice the width of
the needle.
Speed sensor
1. Remove the instrument cluster.
2. Check continuity between terminals 2A and 2F while rotat-
ing the speedometer cable shaft.
3. If there are not four pulses per shaft rotation, replace the
speed sensor.
WATER THERMOSENSOR
Removal / Installation
1. Remove the connector.
2. Remove the thermosensor.
3. Install in the reverse order of removal.
Inspection 1.
Remove the sensor.
2. Place the sensor in water.
3. Heat the water gradually, and check the resistance of the
sensor with an ohmmeter. 4.
If the resistance is not as specified, replace the sensor.
Resistance: 190-2603 at 5O*C (122OF)