Suzuki Grand Vitara JB416 / JB420 (ESP model). Manual — part 1

Table of Contents 1- i

1

Section 1

CONTENTS

Engine

Precautions . . . . . . . . . . . . . 1-*

Precautions. . . . . . . . . . . . . . . .. 1-*

Precautions for Engine. . . . . . . . . . ... 1-*

Engine General Information and
Diagnosis . . . . . . . . . . . . . 1A-1

Precautions. . . . . . . . . . . . . . ...1A-1

Precautions on Engine Service . . . . . . . 1A-*

Precautions in Diagnosing Trouble . . . . . . 1A-1

Precautions For DTC Troubleshooting. . . . .1A-*
Precautions of ECM Circuit Inspection. . . . .1A-*
Precautions of Electric Throttle Body System

Calibration. . . . . . . . . . . . . . ..1A-*

General Description . . . . . . . . . . . .1A-2

Statement on Cleanliness and Care . . . . . 1A-*
Engine Diagnosis General Description . . . . 1A-*

On-Board Diagnostic System Description. . ... 1A-2
Engine and Emission Control System

Description . . . . . . . . . . . . . . 1A-5

CAN Communication System Description. . ... 1A-5

Air Intake System Description. . . . . . . ..1A-*
Electric Throttle Body System Description . . ...1A-*
Description of Electric Throttle Body System

Calibration. . . . . . . . . . . . . . ..1A-*

Generator Control System Description . . . . 1A-*
A/F Sensor Description . . . . . . . . . . 1A-*

Electronic Control System Description. . . . 1A-7
Engine and Emission Control Input / Output

Table . . . . . . . . . . . . . . . . . 1A-8

Schematic and Routing Diagram. . . . . . 1A-9

Engine and Emission Control System

Diagram . . . . . . . . . . . . . . . 1A-9

Engine and Emission Control System Flow

Diagram . . . . . . . . . . . . . . ..1A-11

ECM Input / Output Circuit Diagram. . . . ..1A-12

Component Location . . . . . . . . . . .1A-18

Electronic Control System Components

Location . . . . . . . . . . . . . . ..1A-18

Diagnostic Information and Procedures. . ..1A-20

Engine and Emission Control System Check. ...1A-*
Malfunction Indicator Lamp (MIL) Check . . . .1A-*
DTC Check . . . . . . . . . . . . . . ..1A-*
DTC Clearance . . . . . . . . . . . . . 1A-*

DTC Table. . . . . . . . . . . . . . .1A-20

Fail-Safe Table. . . . . . . . . . . . . 1A-*
Scan Tool Data . . . . . . . . . . . . ... 1A-*
Visual Inspection . . . . . . . . . . . . . 1A-*
Engine Basic Inspection. . . . . . . . . .. 1A-*
Engine Symptom Diagnosis . . . . . . . . 1A-*

Malfunction Indicator Lamp Does Not Come

ON with Ignition Switch ON and Engine Stop
(but Engine Can Be Started) . . . . . . ...1A-26

Malfunction Indicator Lamp Remains ON after

Engine Starts. . . . . . . . . . . . ...1A-28

DTC P0010: Camshaft Position Actuator

Circuit (For M16 Engine) . . . . . . . . ... 1A-*

DTC P0011 / P0012: Camshaft Position -

Timing Over-Advanced or System
Performance / -Retarded (For M16 Engine). .. 1A-*

DTC P0030: HO2S Heater Control Circuit

(Sensor-1) . . . . . . . . . . . . . . . 1A-*

DTC P0031 / P0032: HO2S Heater Control

Circuit Low / High (Sensor-1) . . . . . . . 1A-*

DTC P0037 / P0038: HO2S Heater Control

Circuit Low / High (Sensor-2) . . . . . . . 1A-*

DTC P0101: Mass Air Flow Circuit Range /

Performance. . . . . . . . . . . . . .. 1A-*

DTC P0102: Mass Air Flow Circuit Low Input . . 1A-*
DTC P0103: Mass Air Flow Circuit High Input . 1A-*
DTC P0106: Manifold Absolute Pressure

Range / Performance . . . . . . . . . . 1A-*

DTC P0107: Manifold Absolute Pressure

Circuit Low Input . . . . . . . . . . . ... 1A-*

DTC P0108: Manifold Absolute Pressure

Circuit High Input. . . . . . . . . . . ... 1A-*

DTC P0111: Intake Air Temperature Circuit

Range / Performance . . . . . . . . . . 1A-*

DTC P0112: Intake Air Temperature Sensor

Circuit Low . . . . . . . . . . . . . . 1A-*

DTC P0113: Intake Air Temperature Sensor

Circuit High. . . . . . . . . . . . . . 1A-*

DTC P0116: Engine Coolant Temperature

Circuit Range / Performance. . . . . . . . 1A-*

DTC P0117: Engine Coolant Temperature

Circuit Low . . . . . . . . . . . . . . 1A-*

DTC P0118: Engine Coolant Temperature

Circuit High. . . . . . . . . . . . . . 1A-*

DTC P0122: Throttle Position Sensor (Main)

Circuit Low . . . . . . . . . . . . . . 1A-*

NOTE
For the items with asterisk (*) in the “CONTENTS” below, refer to the same section of the service manual
mentioned in the “FOREWORD” of this manual.

Engine General Information and Diagnosis: 1A-1

Engine

Engine General Information and Diagnosis

Precautions

Precautions in Diagnosing Trouble

S5JB0E1100002

• Don’t disconnect couplers from ECM, battery cable

from battery, ECM ground wire harness from engine
or main fuse before confirming diagnostic information
(DTC, freeze frame data, etc.) stored in ECM memory.
Such disconnection will erase memorized information
in ECM memory.

• Diagnostic information stored in ECM memory can be

cleared as well as checked by using SUZUKI scan
tool or OBD generic scan tool (Vehicle without
diagnosis connector). Before using scan tool, read its
Operator’s (Instruction) Manual carefully to have good
understanding as to what functions are available and
how to use it.
It is indistinguishable which module turns on MIL
because not only ECM but also TCM (for A/T model)
turns on MIL (For details of on-board diagnostic
system for A/T model, refer to “On-Board Diagnostic
System Description in Section 5A in related manual”.
Therefore, check both ECM and TCM (for A/T model)
for DTC when MIL lights on.
When checking ECM for DTC, keep in mind that DTC
is displayed on the scan tool as follows depending on
the scan tool used.
– SUZUKI scan tool displays DTC detected by ECM.
– OBD generic scan tool displays DTC detected by

each of ECM and TCM (for A/T model)
simultaneously.

• Priorities for diagnosing troubles

If two or more DTCs are stored, proceed to the DTC
flow which has been detected earliest in the order and
follow the instruction in that flow.
If no instructions are given, troubleshoot DTCs
according to the following priorities.
a. DTCs other than DTC P0171 / P0172 (Fuel

system too lean / too rich), DTC P0300 / P0301 /
P0302 / P0303 / P0304 (Misfire detected) and
DTC P0401 / P0402 (EGR flow malfunction)

b. DTC P0171 / P0172 (Fuel system too lean / too

rich) and DTC P0401 / P0402 (EGR flow
malfunction)

c. DTC P0300 / P0301 / P0302 / P0303 / P0304

(Misfire detected)

• Be sure to read “Precautions for Electrical Circuit

Service in Section 00 in related manual” before
inspection and observe what is written there.

• ECM replacement:

When substituting a known-good ECM, check for the
following conditions. Neglecting this check may cause
damage to a known-good ECM.
– Resistance value of all relays and actuators is as

specified respectively.

– MAP sensor, electric load current sensor (for J20

engine), A/C refrigerant pressure sensor (if
equipped with A/C), accelerator pedal position
(APP) sensor, TP sensor and CO adjust resistor (if
not equipped with A/F sensor) are in good condition
and none of power circuits of these sensors is
shorted to ground.

• Communication of ECM, BCM, combination meter,

keyless start control module (if equipped), ABS /
ESP

® control module, 4WD control module (if

equipped), steering angle sensor (if equipped) and
TCM (for A/T model) is established by CAN
(Controller Area Network). (For more detail of CAN
communication for ECM, refer to “CAN
Communication System Description”)
. Therefore,
handle CAN communication line with care referring to
“Precaution for CAN Communication System in
Section 00 in related manual”.

• Immobilizer transponder code registration after

replacing ECM:
When ECM is replaced with new one or with another
one, make sure to register immobilizer transponder
code with ECM correctly according to “Procedure after
ECM Replacement in Section 10C in related manual”.

1A-2 Engine General Information and Diagnosis:

General Description

On-Board Diagnostic System Description

S5JB0E1101003

Vehicle not Equipped with Diagnosis Connector
ECM in this vehicle has the following functions.
• When the ignition switch is turned ON with the engine

at a stop, malfunction indicator lamp (MIL) (1) turns
ON to check the circuit of the malfunction indicator
lamp (1).

• When ECM detects a malfunction which gives an

adverse effect to vehicle emission while the engine is
running, it makes the malfunction indicator lamp (1) in
the meter cluster of the instrument panel turn ON or
flash (flashing only when detecting a misfire which
can cause damage to the catalyst) and stores the
malfunction area in its memory.
(If it detects that continuously 3 driving cycles are
normal after detecting a malfunction, however, it
makes MIL (1) turn OFF although DTC stored in its
memory will remain.)

• As a condition for detecting a malfunction in some

areas in the system being monitored by ECM and
turning ON the malfunction indicator lamp (1) due to
that malfunction, 2 driving cycle detection logic is
adopted to prevent erroneous detection.

• When a malfunction is detected, engine and driving

conditions then are stored in ECM memory as freeze
frame data. (For the details, refer to description on
“Freeze Frame Data (Vehicle Not Equipped with
Diagnosis Connector): ”.
)

• It is possible to communicate by using not only

SUZUKI scan tool (2) but also OBD generic scan tool.
(Diagnostic information can be accessed by using a
scan tool.)

Vehicle Equipped with Diagnosis Connector
ECM diagnosis troubles which may occur in the area
including the following parts when the ignition switch is
ON and the engine is running, and indicates the result by
turning on or flashing malfunction indicator lamp (1).
• A/F sensor (if equipped)
• Heated oxygen sensor (if equipped)
• ECT sensor
• TP sensor
• MAF sensor
• IAT sensor
• MAP sensor
• CMP sensor
• CKP sensor
• Knock sensor
• Wheel speed sensor
• CPU (Central Processing Unit) of ECM
• APP sensor
• Oil control valve (for M16 engine)
• Radiator cooling fan relay

3. DLC

1

2

3

I5JB0A110002-01

Engine General Information and Diagnosis: 1A-3

ECM and malfunction indicator lamp (1) operate as
follows.
• Malfunction indicator lamp (1) lights when the ignition

switch is turned ON (but the engine at stop) with the
diagnosis switch terminal ungrounded regardless of
the condition of Engine and Emission control system.
This is only to check the malfunction indicator lamp (1)
in the combination meter and its circuit.

• If the above areas of Engine and Emission control

system is free from any trouble after the engine start
(while engine is running), malfunction indicator lamp
(1) turns OFF.

• When ECM detects a trouble which has occurred in

the above areas, it makes malfunction indicator lamp
(1) turn ON while the engine is running to warn the
driver of such occurrence of trouble and at the same
time it stores the trouble area in ECM back-up
memory. (The memory is kept as it is even if the
trouble was only temporary and disappeared
immediately. And it is not erased unless the power to
ECM is shut off for specified time or it is cleared by
SUZUKI scan tool (2).)
In addition, DTC can be read by not only using
SUZUKI scan tool but also displayed on odometer (5)
of the combination meter. (i.e. when diagnosis switch
terminal (3) is grounded with a service wire (4) and
ignition switch is turned ON.) For further detail of the
checking procedure, refer to “DTC Check in related
manual”.

Warm-Up Cycle
A warm-up cycle means sufficient vehicle operation such
that the coolant temperature has risen by at least 22

°C

(40

°F) from engine starting and reaches a minimum

temperature of 70

°C (160 °F).

Driving Cycle
A “Driving Cycle” consists of engine startup and engine
shutoff.

2 Driving Cycle Detection Logic
The malfunction detected in the first driving cycle is
stored in ECM memory (in the form of pending DTC) but
the malfunction indicator lamp does not light at this time.
It lights up at the second detection of same malfunction
also in the next driving cycle.

Pending DTC
Pending DTC means a DTC detected and stored
temporarily at 1 driving cycle of the DTC which is
detected in the 2 driving cycle detection logic.

6. Diagnosis connector

1

5

6

2

3

4

I5JB0A110003-01

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