2000 SUZUKI SWIFT electrical

8
BODY ELECTRICAL SYSTEM 8-1
SECTION 8
BODY ELECTRICAL SYSTEM
WARNING:
For vehicles equipped with Supplemental Restraint (Air Bag) System:

Service on and around the air bag system components or wiring must be performed only by an autho-
rized SUZUKI dealer. Refer to “Air Bag System Components and Wiring Location View” under “Gener-
al Description” in air bag system section in order to confirm whether you are performing service on
or near the air bag system components or wiring. Please observe all WARNINGS and “Service Precau-
tions” under “On-Vehicle Service” in air bag system section before performing service on or around
the air bag system components or wiring. Failure to follow WARNINGS could result in unintentional
activation of the system or could render-the system inoperative. Either of these two conditions may
result in severe injury.

Technical service work must be started at least 90 seconds after the ignition switch is turned to the
“LOCK” position and the negative cable is disconnected from the battery. Otherwise, the system may
be activated by reserve energy in the Sensing and Diagnostic Module (SDM).
NOTE:
For the descriptions (items) not found in this section, refer to the same section of the Service Manual men-
tioned in the FOREWORD of this manual.
CONTENTS
GENERAL DESCRIPTION8-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Combination Meter8-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Keyless Entry System (If Equipped) 8-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIAGNOSIS8-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Keyless Entry System (If Equipped) 8-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ON-VEHICLE SERVICE8-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Coolant Temp. (ECT) Meter and Sensor 8-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Keyless Entry System (If Equipped) 8-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NOTE:
Terminal arrangement of coupler viewed from harness side.
Coupler A
1. To generator W / R
2. To ignition switch B / W
3. To ECM V / G
4. To ECM V
5. Blank –
6. To ECT sensor Y / W
7. Blank —
8. To engine oil pressure switch Y / B
9. To ECM Br
10. Blank —
11. To SDM (if equipped) Bl
12. Blank —
13. Blank —
14. Blank —
15. To ground R
16. To combination switch R / Y
Coupler B
1. To combination switch G / R
2. Blank —
3. Blank —
4. To ECM Y / G
5. To brake fluid level switch and R / B
parking brake switch
6. Blank —
7. To ABS control module R / Bl
(if equipped)
8. Blank —
9. To fuel level gauge Y / R
10. To ground B / Bl
11. To ignition switch B / W
12. Blank —
13. Blank —
Coupler C
1. Blank —
2. Blank —
3. Blank —
4. Blank —
5. Blank —
6. Blank —
7. To main fuse R
8. To combination switch W / Bl
9. To ground B
10. To combination switch G / Y
Coupler A Coupler B Coupler C
8-2 BODY ELECTRICAL SYSTEM
GENERAL DESCRIPTION
COMBINATION METER

TYPE 1 TYPE 2
BODY ELECTRICAL SYSTEM 8-3
KEYLESS ENTRY SYSTEM (IF EQUIPPED)
The keyless entry system uses radio wave. When the button on the transmitter is pressed, a signal is transmitted
in the form of radio wave to the receiver. Then the signal causes the door lock controller to lock and unlock the door.
The door locks can not operated with the transmitter when either of the following conditions applies.

For 2 seconds after the ignition switch is turned from ON to OFF position.

The ignition switch is at ON or START position.

Any door is open.
DIAGNOSIS
KEYLESS ENTRY SYSTEM (IF EQUIPPED)
ConditionPossible CauseCorrection
The power door lock function
is available but the keyless
entry function is not.
Fuse blown

Code registration error

Transmitter battery dead

Wiring or grounding faulty

Receiver faulty

Transmitter faultyReplace fuse to check for short.
Register code.
Replace battery.
Repair as necessary.
Replace.
Replace.
Only one power door lock
does not operate.
Wiring or coupler faulty

Actuator (door lock motor) faultyRepair as necessary
Replace.
Operation distance unstable.
Transmitter battery dead

Transmitter faultyReplace battery.
Replace.
NOTE:

The operation distance of this system varies depending on the position where the transmitter is oper-
ated, at the front side, the rear side or the lateral side. The distance can be affected by radio noises from
a TV station, a power plant, a broadcasting station and so forth.
ON-VEHICLE SERVICE
ENGINE COOLANT TEMP. (ECT) METER AND
SENSOR
ECT SENSOR
INSPECTION
1) Warm up ECT sensor (1) observing resistance between sensor
terminal (2) and sensor unit (1). Resistance should be de-
creased with increase of its temperature.
2) Check resistance between sensor terminal (2) and sensor unit
(1). If check result is not as specified below, replace sensor.
Temperature
Resistance
50C (122F)136 – 216 Ω

1. Slot
1. To power door lock controller (Unlock)
2. To power door lock controller (Lock)
3. To IG switch
5. To door switch
6. To GND
8. To battery
8-4 BODY ELECTRICAL SYSTEM
KEYLESS ENTRY SYSTEM (IF EQUIPPED)
TRANSMITTER
REPLACEMENT OF THE BATTERY
If the transmitter becomes unreliable, replace the battery.
As the battery power is consumed, the operation distance will be
shorter.
1) Put the edge of a coin or a flat blade screw driver in the slot of
the transmitter and pry it open.
2) Replace the battery (lithium disc-type CR2025 or equivalent) so
its (+) terminal faces the “+” mark of the transmitter.
CAUTION:
Use care not to allow grease or dirt to be attached on the
printed circuit board and the battery.
3) Close the transmitter firmly.
4) Make sure the door locks can be operated with the transmitter.
NOTE:

To prevent theft, be sure to break the transmitter before
discarding it.

Dispose of the used battery properly according to appli-
cable rules or regulations. Do not dispose of lithium bat-
teries with ordinary household trash.
RECEIVER
INSPECTION
Using a tester, check for continuity and voltage between each termi-
nal of the connector connected to the receiver and the body ground
at the following condition.
TerminalCheck forConditionStandard
value
1Continuity
Unlock the driver’s seat
side door by using the
key.No continuity

Continuity
2ContinuityLock the driver’s seat side
door by using the key.No continuity

Continuity
3Voltage
Insert the ignition key and
turn ON the ignition
switch.
0 V
10 – 14 V
5VoltageOpen any one of all
closed doors.10 – 14 V
0 V
6ContinuityAnytimeContinuity
8VoltageAnytime10 – 14 V

BODY ELECTRICAL SYSTEM 8-5
CODE REGISTRATION PROCEDURE
1) Start of code registration
(Initial conditions: IG switch OFF, all doors closed)
2) Open the door and then turn ON the IG switch within 10 seconds.
3) Turn OFF the IG switch within 10 seconds after it is turned ON.
4) Turn the door switch ON and OFF 3 times within 20 seconds af-
ter the IG switch is turned OFF.
5) Within 10 seconds after the door switch is turned ON, turn ON
the IG switch and then OFF within next 10 seconds.
6) After LOCK and UNLOCK operation once, the registration mode
is set.
7) Press the UNLOCK button of the transmitter once within 60 se-
conds after the registration mode is set.
8) LOCK and UNLOCK operation once again completes the regis-
tration procedure.
NOTE:

Perform the above procedure to register a code.

Two codes can be registered.

When a new code is registered, the oldest one will be
cleared.