2001 SUZUKI GRAND VITARA diagnose codes

YH4
GRAND
VITARA
1. Immobilizer Control Module
8G-4 IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED)
IMMOBILIZER CONTROL MODULE
Immobilizer Control Module is installed to the underside of the
instrument panel at the driver's seat side.
As main functions, Immobilizer Control Module checks matching
not only between the Transponder Code transmitted from the igni-
tion key and that registered in Immobilizer Control Module (Up to
4 different Transponder codes can be registered.) but also between
the ECM/Immobilizer Control Module code transmitted from
ECM / PCM and that registered in Immobilizer Control Module. In
addition, it has an on-board diagnostic system (self-diagnosis func-
tion) which is described in ªOn-Board Diagnostic System (Self-
Diagnosis Function)º in this section.
ECM / PCM
As main functions, ECM / PCM not only checks matching of ECM/
Immobilizer Control Module code but also has an on-board diag-
nostic system (self-diagnosis function) as described in ªOn-Board
Diagnostic System (Self-Diagnosis Function)º in this section.
For installation position of ECM / PCM, refer to Section 6E1 or 6E2.
ON-BOARD DIAGNOSTIC SYSTEM
(SELF-DIAGNOSIS FUNCTION)
Immobilizer Control Module and ECM / PCM diagnose troubles
which may occur in the area including the following parts when the
ignition switch is ON.
ECM /
ECM/Immobilizer Immobilizer
Transponder code
PCM: Control Module Control
Coil antenna
code Module:
ECM/Immobilizer

Serial data link
Control Module code
circuit
Serial data link circuit

ECM / PCM
Immobilizer Control

Module

Ignition signal

YH4
GRAND
VITARA
IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED) 8G-13
DIAGNOSTIC TROUBLE CODE TABLE
Immobilizer Control Module side
DIAGNOSTIC TROUBLE CODEDIAGNOSTIC AREADIAGNOSISNO.VOLTMETER INDICATIONDIAGNOSTIC AREADIAGNOSIS
±Normal (No code)This code appears when none of the
other codes are identified.
11
Transponder code
31
Trans onder code
12Immobilizer Control Module
Diagnose trouble according to
13Coil antenna or ignition key with
built-in transponderDiagnose trouble according to
ªDIAGNOSTIC FLOW TABLEº
corresponding to each code No.
21ECM/Immobilizer Control Module code
corres onding to each code No.
22Ignition switch circuit
23Serial data link wire
ECM / PCM side
DTC
(indicated on
Suzuki
scan tool)DTC
(indicated
by MIL)Malfunction Indicator lamp
(MIL) flashing patternDIAGNOSTIC AREADIAGNOSIS
NO DTC12Normal
This code appears when it is
confirmed that none of other
trouble codes is set for immo-
bilizer control system or elec-
tronic fuel injection system.
P162381ECM/Immobilizer
P162084Control Module codeDiagnose trouble according to
ªDIAGNOSTIC FLOW
P162282ECM / PCMTABLEº corresponding to
each code No.
P162183Serial data link wire

YH4
GRAND
VITARA
10B-10 AIR BAG SYSTEM
AIR BAG DIAGNOSTIC SYSTEM CHECK
WARNING:
To avoid deployment when troubleshooting the air bag system, do not use electrical test equipment
such as a battery powered or AC powered voltmeter, ohmmeter, etc., or any type of electrical equipment
other than that specified in this manual. Do not use a non-powered probe type tester.
Instructions in this manual must be followed carefully, otherwise personal injury may result.
CAUTION:
The order in which diagnostic trouble codes are diagnosed is very important. Failure to diagnose the
diagnostic trouble codes in the order specified may result in extended diagnostic time, incorrect diag-
nosis and incorrect parts replacement.
The diagnostic procedures used in this section are designed to find and repair air bag system malfunctions.
To get the best results, it is important to use the diagnostic flow tables and follow the sequence listed below.
A. PERFORM THE ªAIR BAG DIAGNOSTIC SYSTEM CHECK FLOW TABLEº
The ªAir Bag Diagnostic System Check Flow Tableº must be the starting point of any air bag system diagnostics.
The ªAir Bag Diagnostic System Check Flow Tableº checks for proper ªAIR BAGº warning lamp operation, the
ability of the SDM to communicate through ªAIR BAGº warning lamp and whether air bag diagnostic trouble
codes exist.
B. REFER TO THE PROPER DIAGNOSTIC TABLE AS DIRECTED BY THE ªAIR BAG DIAGNOSTIC SYSTEM
CHECK FLOW TABLEº.
The ªAir Bag Diagnostic System Check Flow Tableº will lead you to the correct chart to diagnose any air bag
system malfunctions. Bypassing these procedures may result in extended diagnostic time, incorrect diagnosis
and incorrect parts replacement.
C. REPEAT THE ªAIR BAG DIAGNOSTIC SYSTEM CHECK FLOW TABLEº AFTER ANY REPAIR OR DIAGNOS-
TIC PROCEDURES HAVE BEEN PERFORMED.
Performing the ªAir Bag Diagnostic System Check Flow Tableº after all repair or diagnostic procedures will en-
sure that the repair has been made correctly and that no other malfunctions exist.

YH4
GRAND
VITARA
AIR BAG SYSTEM 10B-15
DIAGNOSTIC TROUBLE CODE TABLE (Page 2 of 2)
DIAGNOSTIC TROUBLE CODEDIAGNOSISNO.MODEDIAGNOSIS
41Resistance high
42Driver
pretensionerResistance low
43circuit
(if equipped)Short to ground
44Short to power circuit
45Resistance highDiagnose trouble
di t ªDi
46Passenger
pretensionerResistance low
according to ªDiagnos-
tic Flow Tableº corre-
sponding to each code
47circuit
(if equipped)Short to ground
s onding to each code
No.
48Short to power circuit
51SDMFrontal crash detected
61ªAIR BAGº warning lamp circuit
71SDMInternal fault
NOTE:

When 2 or more codes are indicated, the lowest numbered code will appear first.

If a code not listed on the table is displayed, then the SDM is faulty.

Current DTC and history DTC can be identified by lighting and flashing of ªAIR BAGº warning lamp as
follows.
Current DTC is set.
(Abnormality exists at present.)History DTC is set only. (Faulty condi-
tion occurred once in the past but nor-
mal condition is restored at present.)
ªAIR BAGº warning lamp
after ignition switch ONRemains ON.Flashing 6 times and turns OFF.
ªAIR BAGº warning lamp
when grounding diagnosis
switch
Current DTC is displayed.History DTC is displayed.
However, if a multiple number of DTC's are set an even one of them is a current DTC, ªAIR BAGº warning
lamp remains on after ignition switch is turned ON. Therefore, it is not possible to identify any of them
as to whether it is a current one or a history one. (But use of scan tool (Tech 1) will make identification
possible.)