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”

1

2

2

I5JB0B130001-03

1

2

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)

1

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.

 

NOTE
For further detail of SUZUKI scan tool, refer 
to its operator’s manual.

 

1) Check engine oil level referring to “Engine Oil and 

Filter Change in Section 0B”.

2) Locate vehicle in outside of workshop or well 

ventilated area with connecting exhaust gas 
extractor to exhaust pipe.

3) Connect SUZUKI scan tool to data link connector 

(DLC) with ignition switch OFF.

4) Start engine.
5) Select “Regeneration” under “Miscellaneous test” 

(“MISC. TEST”) of SUZUKI scan tool, and follow 
instructions displayed in SUZUKI scan tool.

(A)

1

I5JB0A110019-01

(A)

1

I5JB0A110019-01