battery MAZDA PROTEGE 1992 Workshop Manual

CENTRAL PROCESSING UNIT (CPU) T
Inspection
1. Remove the CPU and check the voltage or continuity between terminals of joint box and a body ground.
Ve: Battery voltage
Terminal
A Connected to Test condition Specification
B Rear wiper motor Ignition switch
Va
Light switch ON (first and second position) V0
C TNS switch
Light switch OFF ov
Seat belt buckled Ofi
D Seat belt buckle switch
Seat belt unbuckled
co
E
Rear wiper switch ON
OCI
F
Rear wiper switch
Rear wiper switch OFF
co
Rear washer switch ON 00
G Rear washer switch
Rear washer switch OFF
00
H
Key reminder switch ON
Va
I Key reminder switch
Key reminder switch OFF
ov
Ignition switch OFF ov
J Seat belt warning lamp
Ignition switch ON
VB
K Ground Constant
ov
L IG key illumination Constant
VB
For 5 seconds after ign. switch ON and belt unbuckled
00
M Passive shoulder belt
Other conditions
00
All doors closed
Va
N Door switch
Any door open
ov
0 Battery Constant VB
P Ignition switch
ignition switch ON V0
23UOTX-031
T-57

T WARNING SYSTEM
WARNING SYSTEM
WARNING BUZZER AND TIMER
Circuit Diagram
WARNING LAMP
REAR WIPER SW
RASSIVE CONTROL UNIT
Inspection
Remove the CPU and check the voltage or continuity between terminals of joint box and a body ground.
Key reminder alarm does not sound.
VB: Battery voltage
Terminal Connected to Test condition Specification To correct
I
Key reminder switch Key in cylinder VB Check ignition switch and
(ignition switch) Key out bf cylinder ov wiring harness
(Refer to page T-21)
P Ignition switch Ignition switch ON
‘/B Check ignition switch and
wiring harness
(Refer to page T-21)
N Door switch Any door open ov Check door switches and
All doors closed VS wiring harness
(Refer to page T-51)
23UOTX-031
T-58

WARNING SYSTEM
Light-off reminder alarm does not sound.
VB: Battery voltage
Terminal Connected to Test condition Specification To correct
C Headlight switch Headlight switch ON VB Check headlight switch and
wiring harness
(Refer to pages T-27, 28)
P Ignition switch Ignition switch ON VB Check ignition switch and
wiring harness
(Refer to page T-21)
N Door switch Any door open ov Check door switches and
All doors closed V0 wiring harness
(Refer to page T-51)
23UOTX-033
Seat belt alarm does not sound.
VB: Battery voltage
Terminal Connected to Test condition Specification To correct
P ignition switch Ignition switch ON
Vs Check ignition switch and
wiring harness
(Refer to page T-21)
D Seat belt buckle switch Seat belt buckled
00 Check seat belt buckle switch
Seat belt unbuckled
00 and wiring harness
(Refer to page S-102)
23UOTX-034
Seat belt timer does not operate.
VB: Battery voltage
Terminal Connected to Test condition Specification To correct
P Ignition switch Ignition switch ON VE Check ignition switch and
wiring harness
(Refer to page T-21)
23UOTX-035
Passive shoulder belt alarm does not sound.
VB: Battery voltage
Connected to Test condition
Ignition switch Ignition switch Specification
VB
Passive shoulder belt
control unit For 5 seconds after
ignition switch and belt
unbuckled
Other conditions 00
co
IG key illumination timer does not operate.
To correct
I
Check ignition switch and
wiring harness
(Refer to page T-21)
Check passive shoulder belt
control unit and wiring harness
(Refer to page S-104)
23UOTX-036
Ve: Battery voltage
Terminal Connected to Test condition Specification To correct
L IG key illumination Either door open
VB Check bulbs and wiring
harness
N Door switch Any door open ov Check door switches and
All doors closed
VB wiring harness
(Refer to page T-51)
23UOTX-037
T-59

2L BUZZER 2A 28 2C 2D 1A 3K l--r nnmn
I I‘ I
1C 3L 2E 2G IL iG 1F 1D tB
3F 38 3G 1E 3D
l-l rt
II l-l
l-l It II l-l 1J 11 1H
1G IF 1E 1D 1C 1B 1A 2L 2K 2J 21 2H 2G 2F 2E 2D 2C 28 2A
r-l It ,I 3L 3K 3J 31 3H 3G 3F 3E 3D 3C 3B 3A
Ter- I I minal Connected to 1 1A Combination switch
1B Ground
IC Fuel tank unit
1 ID 1 EGI control unit
I
II L 1J 1
L Ter-
minal Connected to
2A Speed sensor output
28 Light switch (high beam)
2C Turn switch (L)
20 Turn switch (R)
2E Ground
2F Ground
2L 1 IGI battery Ter-
minal Connected to
3A
38 Alternator
3c
30 Oil pressure switch
3E
3F Parking brake switch, Brake fluid switch
3G Passive shoulder belt control unit
3H h
I 31
3J
3K
IG2 battery
3L Water temperature gauge unit

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 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)

REAR WINDOW DEFROSTER
Defroster does not operate
1
Check defog 20A fuse Short circuit (Broken wire)
0 OK
Turn Ign switch to ON
Confirm battery voltage on B/W wire of rear window
defroster switch Repair harness (Fuse - Rear window defroster switch)
0 1 OK
Confirm battery voltage on B/L wire of rear window
defroster switch with the switch ON
I NG
) Check rear window defroster switch
(Refer to page T-77)
0 OK
With the switch ON, confirm battery voltage on B/L wire NG ) Repair harness (Rear window defroster switch -
of the defroster filament Filament)
I
0 1 OK -1 NG
Confirm OV on B wire of the defroster filament - Faulty grounding
Check filament (Refer to page T-77)
23UOTX-047
T-76

1
CRUISE CONTROL SYSTEM
Can’t set or control the speed
I
.
Check meter 15A and stop 20
I Short circuit (broken wire) OK
Turn ignition switch to ON and push on main switch
Check for battery voltage on Y wire of cruise control
unit connector NO
Check cruise control main switch (Refer to page T-21)
3 OK
Check for OV on B wire of cruise control unit connector
I Faulty grounding of cruise control unit
I() OK
Is cruise control unit (m) terminal voltage OK?
(Refer to page T-86)
t Check stoplight switch 1 (Refer to page T-52) p OK
Is cruise control unit (h) terminal voltage OK?
(Refer to page T-86) NG Check stoplight switch 2 (Refer to page T-87)
$4 1 OK
Is cruise control unit (g) terminal voltage OK?
(Refer to page T-86)
p OK
Check EC-AT control unit (Refer to Section K) 1
Is cruise control unit (P) terminal voltage OK?
(Refer to page T-86) Check speed sensor
Is cruise control unit (n) terminal voltage OK?
(Refer to page T-86) Check cruise control switch (Refer to page T-21)
0 OK
Is cruise control unit (a, b, c, o) terminal voltage OK?
(Refer to page T-86)
9 OK Check actuator (Refer to page T-87)
Is cruise control unit (e) terminal voltage OK?
(Refer to page T-86) 1
NC2 I
I ..- - Check cruise control main switch (Refer to page T-21)
I I
I 4
e OK
I
Is cruise control unit (9 terminal voltage OK?
(Refer to page T-86) NO i
Cont’d
T-84