Suzuki Grand Vitara JB419. Service manual — part 35

Engine Electrical Devices: 1C-1

Engine

Engine Electrical Devices

Precautions

Precaution in Replacing ECM

S5JB0B1300001

• If ECM is replaced with new one or a used one, the

engine cannot be started unless the key verification
code stored in ECM is registered in the immobilizer
control system.
Also, ECM is registered the following vehicle
information in addition of the key verification code.
After replacing ECM, register these information to new
ECM according to “Registration Procedure for the
ECM”.

– Fuel injector calibration codes
– EGR/Inlet throttle valve data
– Diesel PF (Diesel Particulate Filter) data

• If ECM is replaced with new or used one without the

function of the immobilizer control system, the engine
will not be started.
In case of the above-mentioned, check if the newly
installed ECM has the function of the immobilizer
control system referring to its part number.

General Description

Description of ECM Registration

S5JB0B1301001

The following vehicle information is registered in ECM.
• Fuel injector calibration codes
• EGR/Inlet throttle valve data
• Diesel PF (Diesel Particulate Filter) data
• Key verification code (for immobilizer control system)
If the following parts are replaced or ECM is reprogrammed, register the above-mentioned information in ECM as
below table.

Service

Part

Registered data

Reference

Replace

ECM

• Fuel injector calibration codes
• EGR/Inlet throttle valve data
• Diesel PF (Diesel Particulate Filter)

data

• Key verification code

Go to “Registration Procedure for the
ECM”.

Fuel injector(s)

Fuel injector calibration code(s)

Go to “Registration Procedure for the Fuel
Injector Calibration Code”.

EGR valve

EGR valve data

Go to “EGR Valve Data Initialization”.

Inlet throttle valve Inlet throttle valve data

Go to “Inlet Throttle Valve Data
Initialization”.

Diesel Particulate
Filter

Diesel PF (Diesel Particulate Filter) data Go to “Diesel Particulate Filter Data

Initialization”.

Reprogram

ECM

Key verification code

Go to “Registration Procedure for the
ECM”.

1C-2 Engine Electrical Devices:

Repair Instructions

Idle Speed Inspection

S5JB0B1306001

1) Shift transmission into Neutral.
2) Start engine and warm it up to normal operating

temperature.

3) Turn all electrical loads OFF.
4) Using SUZUKI scan tool, verify that idle speed is

within specification.

Engine idle speed
: 750 – 850 rpm

5) If not, refer to “SUZUKI Scan Tool Operator’s

Manual.

Engine Control Module (ECM) Removal and
Installation

S5JB0B1306002

CAUTION

As ECM consists of precision parts, be
careful not to expose it to excessive shock.

Removal

NOTE
When ECM is replaced, register vehicle
specification (Fuel injector calibration code
register, EGR/Inlet throttle valve data register
and Diesel PF (Diesel Particulate Filter) data
register) into ECM referring to “Description
of ECM Registration”.

1) Disconnect negative cable at battery.
2) Remove ECM cover.
3) Disconnect connectors from ECM in order of “E66”,

“C85” and “C86” as follows.
a) Push lock (1) to release locking of lock lever (2).

b) Turn the lock lever to arrow direction until it

stops.

4) Remove ECM (1) from ECM bracket (2).

Installation
Reverse removal procedure for installation.

Registration Procedure for the ECM

S5JB0B1306005

For ECM Replacement
Using SUZUKI scan tool, be sure to register the
following vehicle information from old ECM to new or
substitute ECM as follows.
• Fuel injector calibration codes
• EGR/Inlet throttle valve data
• Diesel PF (Diesel Particulate Filter) data
• Key verification code (for immobilizer control system)

NOTE

• For further details of SUZUKI scan tool,

refer to its operator’s manual.

• If these vehicle information cannot be read

from old ECM, register/initialize them
according to “Registration Procedure for
the Fuel Injector Calibration Code”, “EGR
Valve Data Initialization”, “Diesel
Particulate Filter Data Initialization” and
“Procedure after ECM Replacement in
Section 10C”.

“C85”

“C86”

“E66”

I5JB0B130001-03

I5JB0B130002-01

Engine Electrical Devices: 1C-3

1) Register fuel injector calibration codes as follows.

a) Connect SUZUKI scan tool to DLC with ignition

switch OFF.

b) Turn IG switch to ON position.
c) Select “Replace ECM” of “ECM Setting” under

“Miscellaneous test” (“Misc test”) mode of
SUZUKI scan tool

d) Read fuel injector calibration codes from old

ECM by performing “IMA code register”.

e) Replace old ECM with new or substitute ECM

referring to “Engine Control Module (ECM)
Removal and Installation”.

f) Register injector calibration codes to new or

substitute ECM by performing “IMA code
register”.

g) Turn ignition switch to OFF position, and wait 40

seconds or more.

2) Register the EGR/Inlet throttle valve data and Diesel

PF (Diesel Particulate Filter) data respectively in the
same manner as step 1) by selecting “EGR Valve
Data Initialization” and “Diesel Particulate Filter Data
Initialization”.

3) Register key verification code into ECM referring to

“Procedure after ECM Replacement in Section 10C”.

For ECM Reprogram

1) Perform ECM reprogramming. (Refer to “Suzuki

Pass-Thru Reprogramming Tool Operator’s
Manual”.)

2) Register key verification code to reprogrammed

ECM referring to “Procedure after ECM
Replacement in Section 10C”.

NOTE
Once ECM reprogramming is failed, vehicle
information (fuel injector calibration codes,
EGR/Inlet throttle valve data and Diesel PF
(Diesel Particulate Filter) data) is cleared
from ECM.
In this case, after ECM reprogramming is
successful, register/initialize them according
to “Registration Procedure for the Fuel
Injector Calibration Code”, “EGR Valve Data
Initialization”, “Diesel Particulate Filter Data
Initialization”, and “Procedure after ECM
Replacement in Section 10C”.

Registration Procedure for the Fuel Injector
Calibration Code

S5JB0B1306006

After one or more fuel injector(s) is replaced, register the
fuel injector calibration code of each fuel injector
manually, by reading the fuel injector calibration code on
each fuel injector using SUZUKI scan tool (Refer to
“SUZUKI Scan Tool Operator’s Manual”).

EGR Valve Data Initialization

S5JB0B1306025

1) Connect SUZUKI scan tool to data link connector

(DLC) (1) with ignition switch OFF.

Special tool
(A): SUZUKI scan tool

2) Turn ignition switch ON position and select “ECM

setting” under “Miscellaneous test” (“MISC TEST”)
mode of SUZUKI scan tool.

3) Perform “Initialize EGR valve data” on scan tool.
4) Turn ignition switch to OFF position and wait 40

seconds.

5) Turn ignition switch to ON position and then start

engine for programming latest EGR valve offset.

6) Turn ignition switch to OFF position and wait 120

seconds.

(A)

I5JB0A110019-01

1C-4 Engine Electrical Devices:

Inlet Throttle Valve Data Initialization

S5JB0B1306026

1) Connect SUZUKI scan tool to data link connector

(DLC) (1) with ignition switch OFF.

Special tool
(A): SUZUKI scan tool

2) Turn ignition switch ON position and select “ECM

setting” under “Miscellaneous test” (“MISC TEST”)
mode of SUZUKI scan tool.

3) Perform “Initialize Inlet throttle valve data” on scan

tool.

4) Turn ignition switch to OFF position and wait 40

seconds or more.

Diesel Particulate Filter Data Initialization

S5JB0B1306027

1) Connect SUZUKI scan tool to data link connector

(DLC) (1) with ignition switch OFF.

Special tool
(A): SUZUKI scan tool

2) Turn ignition switch ON position and select “ECM

setting” under “Miscellaneous test” (“MISC TEST”)
mode of SUZUKI scan tool.

3) Perform “Initialize Diesel PF data” on scan tool.
4) Turn ignition switch to OFF position and wait 40

seconds or more.

Diesel Particulate Filter After-sales
Regeneration Procedure

S5JB0B1306028

WARNING

During after-sales regeneration, exhaust gas
temperature rises significantly and excessive
smoke and strong smell occur.
In order to reduce risk of fire and personal
injury, this work must be performed in
outside of work shop or a well ventilated area
with an exhaust gas extractor approved at
400

°C (750 °F) and nothing should be left in

vicinity of exhaust system components.

CAUTION

• Check the engine oil level before

performing this procedure to prevent the
engine damage. Engine oil level should be
between the Low and Full level marks on
the gauge.

• It is essential to change engine oil after

this procedure in order to avoid any
damage to the engine.

• Perform diesel particulate filter after-sales

regeneration only at the following
conditions.
– “DTC P1431: Clogged Particulate Filter

Failures Malfunction in Section 1A” is
detected.

– “DTC P1436: Regeneration Request

Failures Malfunction in Section 1A” is
detected.