SUZUKI SWIFT 2000 1.G Transmission Service Workshop Manual

BODY ELECTRICAL SYSTEM 8-27
POWER WINDOW SUB SWITCH
INSPECTION
Check for continuity between terminals at each switch condition
as shown below.
If check result is not as specified, replace.
DOOR SWITCH
INSPECTION
Remove door switch from body and check switch for continuity.
If found detective, replace switch.
Door switch specification
STOP LAMP (BRAKE) SWITCH
INSPECTION
Check stop lamp (brake) switch for continuity as shown in figure.
If found detective, replace switch.
Stop lamp (brake) switch specification
Switch slider (1) pushed ON : No continuity
Switch slider (1) released OFF : Continuity
Terminal
Switch
Position
UPBSDSUD U
OFF
DOWN
OFF position (Door closed) No continuity
ON position (Door open) Continuity
1

8-28 BODY ELECTRICAL SYSTEM
POWER DOOR LOCK SYSTEM (IF
EQUIPPED)
DOOR LOCK CONTROLLER
INSPECTION
Check voltage between each terminal and body ground with con-
necting controller coupler.
If check result is not as specified, replace.
Door lock controller specification
DRIVER’S DOOR KNOB SWITCH
ON-VEHICLE INSPECTION
1) Remove driver’s door trim and disconnect door lock switch
coupler.
2) Check for continuity between “ULS” terminal and “COM” ter-
minal at each switch condition.
Driver’s door knob switch specification
UNLOCK position (1) : Continuity
LOCK position (2) : No continuityTermi-
nalVoltage (V) Condition
B10 - 14–
L10 - 14“LOCK” position
0 - 1 Other position than “LOCK”
UL10 - 14“UNLOCK” position
0 - 1 Other position than “UNLOCK”
ULS0 - 1“UNLOCK” position
“A”
(Refer to the figure.)“LOCK” position
KL“B”
(Refer to the figure.)Approx. 75 ms while “LOCK”
position or “UNLOCK” position
signal received
5Other condition than above
mentioned
E0Always
1. Door lock controller
2. Fuse box
1
2

BODY ELECTRICAL SYSTEM 8-29
DOOR LOCK ACTUATOR
ON-VEHICLE INSPECTION
1) Remove door trim (front, rear or back) and disconnect door
lock actuator (3) coupler.
2) Connect battery (+) terminal to terminal “L” and (-) terminal
to terminal “UL”. Check that door lock actuator (3) is on
“LOCK” position.
If check result is not satisfied, replace.
3) Connect battery (+) terminal to terminal “UL” and (-) terminal
to terminal “L”. Check that door lock actuator (3) is on
“UNLOCK” position.
If check result is not satisfied, replace.
KEYLESS ENTRY SYSTEM (IF EQUIPPED)
DOOR LOCK CONTROLLER
INSPECTION
Refer to DOOR LOCK CONTROLLER of POWER DOOR LOCK
SYSTEM (IF EQUIPPED) in this section.
DOOR LOCK ACTUATOR
INSPECTION
Refer to DOOR LOCK ACTUATOR of POWER DOOR LOCK
SYSTEM (IF EQUIPPED) in this section.
[A] : FRONT DOOR
[B] : REAR DOOR
[C] : BACK DOOR

8-30 BODY ELECTRICAL SYSTEM
RECEIVER
INSPECTION
Check voltage between each terminal and body ground with con-
necting controller coupler. If check result is not as specified,
replace.
Receiver specification
Reference :
TRANSMITTER
REPLACEMEMT OF THE BATTERY
If the transmitter becomes unreliable, replace the battery.
As the battery power is consumed, the operation distance will be
shorter.
1) Remove screw.
2) Use a small coin or flat blade screwdriver to separate the
bottom half from the top half of the transmitter.
3) Replace the battery with the new one. Make sure the posi-
tive (+) side of battery faces up. For battery replacement,
use type CR2032 or equivalent.
4) Put the two halves back together and install a screw.
5) Make sure the door locks can be operated with the transmit-
ter. Terminal Voltage (V) Condition
B10 - 14Always
SIG“A”
(Refer to the figure)Approx. 75 ms while trans-
mitter signal received
5Other condition than above
mentioned
GND 0 Always
1. Receiver
2. Receiver coupler (receiver side)

BODY ELECTRICAL SYSTEM 8-31
CODE REGISTRATION PROCEDURE
1) Confirm that IG switch is OFF position.
2) Remove DOOR LOCK fuse and install it again.
3) Press the button on the transmitter one time toward the
receiver within 30 seconds.
4) If two transmitters are registered, repeat step 1) to 3) with
other transmitter.
POWER DOOR MIRROR CONTROL SYSTEM
(IF EQUIPPED)
MIRROR SWITCH
INSPECTION
1) Remove mirror switch from instrument panel.
2) Check for continuity between terminals at each switch posi-
tion as show below.
If check result is not as specified, replace mirror switch. CAUTION:
Use care not to allow grease or dirt to be attached on the
printed circuit board and the battery.
NOTE:
To prevent theft, be sure to break the transmitter
before discarding it.
Dispose of the used battery properly according to
applicable rules or regulations. Do not dispose of lith-
ium batteries with ordinary household trash.
NOTE:
Two transmitter codes can be registered.
When a new transmitter is registered, the oldest one
will be cleared.
UP
DOWN
LEFT
RIGHTL
Rabcd
eg
f

8-32 BODY ELECTRICAL SYSTEM
DOOR MIRROR ACTUATOR
INSPECTION
1) Remove garnish from door.
2) Pull out door mirror coupler at bracket.
3) Disconnect door mirror coupler.
4) Check that door mirror operates properly when battery volt-
age is applied to connector terminals.
Connect battery positive and negative terminal to the door
mirror terminal shown below.
If it does not follow the table’s operation, replace door mirror
assembly.
FRONT SEAT HEATER (IF EQUIPPED)
SEAT HEATER SWITCH (DRIVER AND PASSENGER
SIDE)
INSPECTION
1) Confirm that ignition switch is OFF position.
2) Pull out seat heater switch from front center console box.
3) Disconnect seat heater switch coupler.
4) Check for continuity between terminals at each switch posi-
tion as show below. If check result is not as specified,
replace. NOTE:
When installing door mirror to door, be careful not to
pinch harness between door and door mirror.
M2COMM1
Terminal
Operation
UpCOM M1 M2
Down
Left
Right
Terminal
Switch
Position
OFF
LO
HIIG LOAD1 LOAD2 E

BODY ELECTRICAL SYSTEM 8-33
SEAT HEATER WIRE
INSPECTION
1) Confirm that seat heater switch is OFF position.
2) Disconnect two couplers of seat heater under the seat cush-
ion.
3) Check for continuity between terminals as show below.
If not continuity, replace faulty seat heater.
Seat heater circuit in seat back
Between “a” and “b”
Between “b” and “d”
Between “c” and “e”
Seat heater circuit in seat cushion
Between “f” and “g”
1. Heater wire
2. Thermostat

8-34 BODY ELECTRICAL SYSTEM

IMMOBILIZER CONTROL SYSTEM 8G-1
6F1
6F2
6G
6H
6K
7A
7A1
7B1
7C1
7D
7E
7F
8A
8B
8C
8D
8G
9
10
10A
10B
SECTION 8G
IMMOBILIZER CONTROL SYSTEM
CONTENTS
GENERAL DESCRIPTION ............................. 8G-2
WIRING CIRCUIT ....................................... 8G-3
ON-BOARD DIAGNOSTIC SYSTEM
(SELF-DIAGNOSIS FUNCTION) ................ 8G-4
DIAGNOSIS .................................................... 8G-5
PRECAUTIONS IN DIAGNOSING
TROUBLES ................................................. 8G-5
PRECAUTIONS IN IDENTIFYING
DIAGNOSTIC TROUBLE CODE............. 8G-5
DIAGNOSTIC FLOW TABLE ...................... 8G-6
DIAGNOSTIC TROUBLE CODE (DTC)
CHECK
(IMMOBILIZER CONTROL MODULE)........ 8G-7
DIAGNOSTIC TROUBLE CODE (DTC)
CHECK (ECM) ............................................ 8G-8
DIAGNOSTIC TROUBLE CODE TABLE .... 8G-9
TABLE A - IMMOBILIZER INDICATOR
LAMP CHECK (IMMOBILIZER INDICATOR
LAMP DOES NOT LIGHT AT IGNITION
SWITCH ON) ............................................ 8G-10
TABLE B - IMMOBILIZER INDICATOR
LAMP CHECK (IMMOBILIZER INDICATOR
LAMP REMAINS ON AFTER ENGINE
STARTS) ................................................... 8G-11
TABLE C - DTC IS NOT OUTPUT FROM
IMMOBILIZER CONTROL MODULE ........ 8G-12
DTC11/32 TRANSPONDER CODE NOT
MATCHED ................................................ 8G-13
DTC31 TRANSPONDER CODE NOT
REGISTERED ........................................... 8G-14
DTC12 FAULT IN IMMOBILIZER
CONTROL MODULE ................................ 8G-14DTC13 NO TRANSPONDER CODE
TRANSMITTED OR COIL ANTENNA
OPENED/SHORTED ................................. 8G-15
DTC21 ECM/IMMOBILIZER CONTROL
MODULE CODE NOT MATCHED
(IMMOBILIZER CONTROL MODULE
SIDE) ......................................................... 8G-16
DTC P1623 ECM/IMMOBILIZER CONTROL
MODULE CODE NOT MATCHED (ECM
SIDE) ......................................................... 8G-16
DTC P1620 ECM/IMMOBILIZER CONTROL
MODULE CODE NOT REGISTERED ....... 8G-16
DTC P1622 FAULT IN ECM ...................... 8G-16
DTC22 IGNITION SWITCH CIRCUIT
OPEN/SHORT ........................................... 8G-17
DTC23 NO ECM/IMMOBILIZER CONTROL
MODULE CODE TRANSMITTED FROM
ECM OR DLC CIRCUIT OPENED/
SHORTED ................................................. 8G-18
DTC P1621 NO ECM/IMMOBILIZER
CONTROL MODULE CODE TRANSMITTED
FROM IMMOBILIZER CONTROL
MODULE OR DLC CIRCUIT OPENED/
SHORTED ................................................. 8G-18
INSPECTION OF ECM, IMMOBILIZER
CONTROL MODULE AND ITS CIRCUIT .. 8G-20
ON-VEHICLE SERVICE ................................ 8G-21
PRECAUTIONS IN HANDLING
IMMOBILIZER CONTROL SYSTEM ......... 8G-21
IMMOBILIZER CONTROL MODULE ......... 8G-22
HOW TO REGISTER IGNITION KEY ........... 8G-23 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
authorized SUZUKI dealer. Refer to “Air Bag System Components and Wiring Location View” under
“General Description” in air bag system section in order to confirm whether you are performing ser-
vice on or near the air bag system components or wiring. Please observe all WARNINGS and “Ser-
vice Precautions” 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).

8G-2 IMMOBILIZER CONTROL SYSTEM
PROCEDURE AFTER IMMOBILIZER CONTROL
MODULE REPLACEMENT ........................... 8G-24
PROCEDURE AFTER ECM
REPLACEMENT............................................ 8G-25SPECIAL TOOL ............................................ 8G-25

GENERAL DESCRIPTION
The immobilizer control system designed to prevent vehicle burglar consists of following components.
Engine control module (ECM)
Immobilizer control module (1) with coil antenna
Ignition key (2) with built-in transponder
Operation of this system is as follows.
i) Each ignition key has its own code (Transponder code) stored in memory. When the ignition switch is
turned ON, Immobilizer Control Module tries to read the Transponder code through the coil antenna
installed to the steering lock assembly.
ii) Immobilizer Control Module compares the Transponder code read in Step (i) and that registered in Immo-
bilizer Control Module and checks if they match.
iii) When it is confirmed that two Transponder codes match each other as described above, Immobilizer Con-
trol Module and ECM check if ECM/Immobilizer Control Module codes registered in them respectively
match.
iv) Only when it is confirmed that ECM/Immobilizer Control Module codes match, the engine starts running. If
Transponder codes in Step (ii) or ECM/Immobilizer Control Module codes in Step (iii) do not match, ECM
will stop operation of the injector and ignition of spark plug.
3. Data link connector (DLC)
4. Immobilizer indicator lamp
5. ECM