CIRCUIT DIAGRAMS
H1J14X12AA
B-194
CLOCK
INDEX - In order of connector No.C-3
Wiring diagram
page Circuit diagram page Parts name Connector
No.
BB-108Back-up lamp switchB-142,143B-12,16
B-110Engine coolant temperature gauge unitB-148,152B-12,16
B-112EGR solenoid valveB-91,99B-12,16
B-114Ignition coil 1B-82,83B-12,16
B-115Idle speed control servoB-88,96B-12,16
B-116Camshaft position sensorB-88,96B-12,16
B-118Engine coolant temperature sensorB-89,97B-12,16
B-119Ignition coil 2B-82,83B-12,16
B-121Crank angle sensorB-88,96B-13,16
B-122Detonation sensorB-89,97B-13,17
B-123ABS-ECUB-198,200,201,202,203,204,205,206,
208,209,210,211,229,232,233,239,
242,243B-13,17
B-138ResistorB-89,97B-13,17
B-139Electric pump relay
B-140Fuel pump relay 3B-93,101B-13,17
B-141Fuel pump resistorB-93,101B-13,17
B-142Secondary air control solenoid valveB-91,99B-13,17
CC-01Combination meterB-84,87,95,103,106,118,122,126,129,
135,139,148,149,152,153,156,157,
198,206,214,222,230,240,248,250,
256, 258B-18,24
C-02Combination meterB-110,115,118,122,126,129,135,139,
148,149,152,153,156,157,198,206,
248, 250,256,258B-18,24
C-03Hazard warning switchB-136,140B-18,24
C-04ClockB-194B-18,24
C-05J/C (1)B-56,62,93,101,104,107,111,112,115,
116,118,122,124,125,127,128,131,
133,136,137,140,141,148,152,153,
156,158,164,170,172,175,181,185,
187,191,194,195,196,197,212,214,
220,222,228,230,238,240,257B-18,24
C-08J/C (3)B-58,64,95,104,105,107,108,112,113,
116,117,119,123,124,125,126,127,
128,129,131,133,136,137,140,141,
149,153,159,164,165,171,172,173,
175,180,181,185,187,188,189,191,
193,194,195,202,210,214,218,222,
226,227,230,236,240,246,247,253,
255,257,258B-18,24
INDEX - In order of connector No.C-6
Wiring diagram
page Circuit diagram page Parts name Connector
No.
CC-130Instrument panel wiring harness and
control wiring harness combinationB-84,87,92,95,100,142,143,148,150,
152,154,157,175,178,198,200,201,
204,205,206,212,213,216,219,228,
229,232,235,237,252,254,255,256,
257B-21,27
C-131Blower switchB-174,180B-21,27
C-132Front wiring harness (LH) and instru-
ment panel wiring harness combinationB-74,78,92,100,105,108,113,117,119,
123,125,128,137,141,150,154,158,
159,164,165,170,172,174,180,185,
188,189,204,205,219,227,237,247,
248,250,252,254B-21,27
C-133Instrument panel wiring harness and
floor wiring harness (LH) combinationB-114,121,126,138,143,144,145,159,
161,165,167,173,249,251B-21,27
C-134Instrument panel wiring harness and
floor wiring harness (LH) combinationB-216,224,234,235,244,245B-21,27
C-135Front wiring harness (LH) and instru-
ment panel wiring harness combinationB-76,82,87,93,95,101,103,104,106,
107,110,111,114,115,118,122,124,127,
128,130,131,132,133,134,135,136,
138,139,140,144,145,146,148,149,
152,153,156,158,164,170,172,175,
177,181,183,185,186,187,190,191,
194,195,196,197,198,206,212,214,
220,222,228,230,238,240,256,257,
258B-21,27
C-136Front wiring harness (LH) and control
wiring harness combination
211,225,243,254B-27
C-137Fog lamp switchB-124,127B-21,27
C-138Remote controlled mirror switchB-192,193B-21,27
C-141Roof antennaB-196B-21,27
C-142ACD mode changeover switchB-214,222,230,240B-21,27
C-146Instrument panel wiring harness and
floor wiring harness (RH) combinationB-93,101,129,148,152,156,203,211,
217,225,233,243B-21,27
C-147Instrument panel wiring harness and
control wiring harness combination
242,244B-27
C-201Ignition switchB-76B-22,28
C-202Key reminder switchB-253,255B-22,28
C-203Column switchB-104,107,112,116,125,128,137,141,
187,191B-22,28
C-204Clock spring
C-205Clock spring
C-206Horn switch
INDEX - In order of parts nameC-11
INDEX
In order of parts name
Parts nameConnector
No.Circuit diagram pageWiring diagram
page
4WD-ECU
219,220,221,222,223,224,226,227,
228,230,231,232,234,236,237,238,
240,241,242,244, 246,247B-19,25
4WD-ECU
221,224,225,227,228,229,232,234,
235,237,238,239,242,244,245,247B-19,25
AA/C compressorA-47B-178,184B-7,9
A/C compressor relayB-12XB-73,178,184B-10,14
A/C-ECU or heater control unitC-32B-175,181,185B-19,25
ABS-ECUB-123B-198,200,201,202,203,204,205,206,
208,209,210,211,229,232,233,239,
242,243B-13,17
ACD mode changeover switchC-142B-214,222,230,240B-21,27
Air bag module (squib)
Air bag module (squib)
Air flow sensorB-31B-90,98B-11,15
AlternatorB-21B-84B-11,15
AlternatorB-22B-84B-11,15
Ashtray illumination lampD-20B-195B-31,33
BBack-up lamp switchB-108B-142,143B-12,16
Blower motorC-14B-174,180B-18,24
Blower relayC-215B-54,55,174,180B-23,29
Blower switchC-131B-174,180B-21,27
Brake fluid level switchB-04B-157B-10,14
CCamshaft position sensorB-116B-88,96B-12,16
Cigarette lighterD-18B-195B-31,33
Cigarette lighterD-19B-195B-31,33
Cigarette lighter illumination lampD-21B-195B-31,33
ClockC-04B-194B-18,24
Clock spring
Clock spring
GENERAL -Precautions Before Service00-18
PRECAUTIONS BEFORE SERVICE
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
1. Items to follow when servicing SRS
(1) Be sure to read GROUP 52B - Supplemental Restraint System (SRS).
For safe operations, please follow the directions and heed all warnings.
(2) Wait at least 60 seconds after disconnecting the battery cable before doing any further work.
The SRS system is designed to retain enough voltage to deploy the air bag even after the battery
has been disconnected. Serious injury may result from unintended air bag deployment if work
is done on the SRS system immediately after the battery cable is disconnected.
(3) Warning labels must be heeded when servicing or handling SRS components. Warning labels
are located in the following locations.
DSun visor
DGlove box
DSRS-ECU
DSteering wheel
DSteering Joint Cover
DAir bag module (driver’s side and front passenger’s side)
DClock spring
DSeat belt with pre-tensioner
(4) Always use the designated special tools and test equipment.
(5) Store components removed from the SRS in a clean and dry place.
The air bag module should be stored on a flat surface and placed so that the pad surface is
facing upward.
Do not place anything on top of it.
(6) Never attempt to disassemble or repair the SRS components (SRS-ECU, air bag module, clock
spring and seat belt with pre-tensioner).
(7) Whenever you finish servicing the SRS, check the SRS warning lamp operation to make sure
that the system functions properly.
(8) Be sure to deploy the air bag before disposing of the air bag module or disposing of a vehicle
equipped with an air bag. (Refer to GROUP 52B - Air Bag Module Disposal Procedures.)
2. Observe the following when carrying out operations on places where SRS components are installed,
including operations not directly related to the SRS air bag.
(1) When removing or installing parts do not allow any impact or shock to the SRS components.
(2) SRS components should not be subjected to heat, so remove the SRS components before drying
or baking the vehicle after painting.
DSRS-ECU, air bag module, clock spring: 93_C or more
DSeat belt with pre-tensioner: 90_C or more
After re-installing them, check the SRS warning lamp operation to make sure that the system
functions properly.
GENERAL -Supplemental Restraint System (SRS)00-21
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
To improve safety, the SRS and seat belts with
pre-tensioner. These systems enhance collision
safety by restraining the front passengers in case
of an accident. The SRS works with the
pre-tensioner simultaneously when a collision is
detected.
The SRS consists of two air bag modules, SRS
air bag control unit (SRS-ECU), SRS warning lamp
and clock spring. The air bags are located in the
center of the steering wheel, above the glove box.
Each air bag has a folded air bag and an inflator
unit. The SRS-ECU under the floor console monitors
the system and has a safing G-sensor and an
analog G-sensor. The warning lamp on theinstrument panel indicates the operational status
of the SRS. The clock spring is installed in the
steering column. The seat belt pre-tensioner is built
into the front seat belt retractor. Only authorized
service personnel should do work on or around
the SRS components and seat belt with
pre-tensioner. Those service personnel should read
this manual carefully before starting any such work.
Extreme care must be used when servicing the
SRS to avoid injury to the service personnel (by
inadvertent deployment of the air bags or
inadvertent operation of the seat belt with
pre-tensioner) or the driver (by rendering the SRS
or the seat belt with pre-tensioner inoperative).
Diagnosis
connectorFront passenger’s
air bag module
Clock spring Driver’s air bag
module
SRS-ECU
SRS warning lamp
Driver’s air bag
Front
passenger’s
air bag
Seat belt with
pre-tensioner
GENERAL -Supplemental Restraint System (SRS)00-22
SRS SERVICE PRECAUTIONS
1. In order to avoid injury to yourself or others
from accidental deployment of the air bag and
accidental operation of the seat belt with
pre-tensioner during servicing, read and
carefully follow all the precautions and
procedures described in this manual.
2. Do not use any electrical test equipment on
or near SRS components, except those
specified on P.52B-6.
3. Never Attempt to Repair the Following
Components:
DSRS air bag control unit (SRS-ECU)
DClock spring
DDriver’s and front passenger’s air bag
modules
DSeat belt with pre-tensionerNOTE
If any of these components are diagnosed as
faulty, they should only be replaced, in
accordance with the INDIVIDUAL COM-
PONENTS SERVICE procedures in this
manual. (Refer to P.52B-49.)
4. After disconnecting the negative (–) battery cable,
wait 60 seconds at least before any service and
insulate the disconnected cable with tape. The SRS
retain enough voltage to deploy the air bags for a
short time even after the disconnection of the battery.
So, serious injury may result by accidental air bag
deployment if a work is done on the SRS just after
the disconnection of the battery.
5. Do not attempt to repair the wiring harness connectors
of the SRS. If the connector(s) are diagnosed as defective,
replace the wiring harness(es). If the harness(es) are
diagnosed as faulty, replace or repair the wiring
harness(es) according to the table that follows.
Insulating tape
Battery
SRS-ECU connector
GENERAL -Supplemental Restraint System (SRS)00-23
SRS-ECU
Terminal No.Destination of harnessCorrective action
7Instrument panel wiring harness→EarthRepair or replace each wiring
harness
8Instrument panel wiring harness→Combination meter
(SRS warning lamp)
harness
9, 10Instrument panel wiring harness→Front passenger’s air bag
module
11 , 1 2Instrument panel wiring harness→Clock spring→Driver’s air bag
module)Repair or replace the dash wiring
harness. Replace clock spring.
13Instrument panel wiring harness→Junction block (fuse No.3)Repair or replace each wiring
harness
16Instrument panel wiring harness→Junction block (fuse No.2)
harness.
20Instrument panel wiring harness→Diagnosis connector
29, 30Floor wiring harnessàDriver’s seat belt pre-tensioner
27, 28Floor wiring harnessàFront passenger’s seat belt pre-tensioner
6. Inspection of the SRS-ECU harness connector should be carried out by the following procedure.
Insert the special tool (probe, MB991222, in the harness set) into the connector from harness side
(rear side), and connect the tester to this probe. If any tool than specified is used, damage to the
harness and other components will result. Furthermore, measurement should not be carried out by
touching the probe directly against the terminals from the front of the connector. The terminals are
plated to increase their conductivity, so that if they are touched directly by the probe, the plating
may break, which will cause drops in reliability.
MB991222 SRS-ECU harness connector
SRS-ECU harness connector (rear view)
7. SRS components and seat belt with pre-tensioner should not be subjected to hart, so remove the
SRS-ECU, driver’s and front passenger’s air bag modules, clock spring, and seat belt with pre-tensioner
before drying or baking the vehicle after painting.
DSRS - ECU, air bag module, clock spring : 93Æ
or more
DSeat belt with pre-tensioner : 90Æ
or more
8. Whenever you finish servicing the SRS, check warning lamp operation to make sure that the system
functions properly. (Refer to P.52B-6.)
9. Make certain that the ignition switch is LOCK (OFF) position when the MUT-IIis connected or
disconnected.
10. If you have any questions about the SRS, please contact your local distributor.
NOTE
SERIOUS INJURY CAN RESULT FROM UNINTENDED AIR BAG DEPLOYMENT, SO USE ONLY
THE PROCEDURES AND EQUIPMENT SPECIFIED IN THIS MANUAL.