ecm SUZUKI JIMNY 2005 3.G Service User Guide
[x] Cancel search | Manufacturer: SUZUKI, Model Year: 2005, Model line: JIMNY, Model: SUZUKI JIMNY 2005 3.GPages: 687, PDF Size: 13.38 MB
Page 177 of 687
Downloaded from www.Manualslib.com manuals search engine 3D-4 FRONT SUSPENSION
SYSTEM CIRCUIT
1. 4WD controller 4. 4WD indicator lamp 7. Blower fan switch 10. Vacuum switch 13. IG fuse
2. VSV1 5. ECM 8. A/C switch (if equipped) 11. Main fuse 14. A/C controller (if equipped)
3. VSV2 6. Blower fan motor 9. 4WD switch 12. IG switch 15. Coupler of 4WD controller
Page 179 of 687
Downloaded from www.Manualslib.com manuals search engine 3D-6 FRONT SUSPENSION
OPERATION
2WD
→ 4WD
When the transfer shift control lever is shifted from the 2WD (2H) position to the 4WD (4H or 4L) position, a 4WD
“ON” signal is transmitted to the 4WD controller which then activates VSV2 to apply vacuum in the intake mani-
fold to the chamber “B” in the hub housing.
When vacuum is applied, the slide gear is separated from the magnet, moves toward the center of the vehicle
body and gets engaged with the outer gear. In this way, the front axle shaft and the front wheel hub rotate as one
unit.
If vacuum in the circuit fails to reach 260 mmHg within 15 seconds after operation of VSV2 due to such trouble
as a hole in the vacuum pipe, the slide gear does not operate and the 4WD indicator light flashes to warn that
the hub is unlocked.
1. ECM 8. Engine speed signal 15. Chamber B 22. Slide gear
2. 4WD controller 9. Intake manifold 16. Piston A 23. Wheel hub
3. 4WD indicator lamp 10. Check valve 17. Magnet 24. Spindle
4.4WD switch 11. Vacuum tank 18. Housing 25. Front axle shaft
5. A/C switch (if equipped) 12. VSV1 19. Spring 26. To opposite side
6. Vacuum switch 13. VSV2 20. Diaphragm 27. A/C controller
7. A/C cut signal (if equipped) 14. Outer gear 21. Sleeve A: Vacuum circuit
Page 320 of 687
Downloaded from www.Manualslib.com manuals search engine ANTILOCK BRAKE SYSTEM (ABS) 5E-3
System Schematic
1. Wheel speed sensor (Right front) 7. Wheel speed sensor (Left rear) 13. ABS hydraulic unit
2. Stop lamp switch 8.“ABS” warning lamp 14. G sensor
3. ABS control module 9. ABS pump motor transistor 15. Data link connector
4. Wheel speed sensor (Right rear) 10. ABS solenoid valve transistor 16. ABS hydraulic unit / control module assembly
5. Monitor connector 11. Proportioning valve 17. 4WD switch (for 4WD model only)
6. ABS lamp driver module 12. Wheel speed sensor (Left front)
INPUTOUTPUT
ABS control
module Wheel speed sensor (RF)
Wheel speed sensor (RR)
Wheel speed sensor (LR)
Wheel speed sensor (LF)
Stop lamp switch
Diag. switch terminal
Battery voltage
4WD switch (for 4WD model only) G sensor
Pump motor
transistor
Fail-safe
transistor
Pump motor
LF hold solenoid
LF release solenoid
RF hold solenoid
RF release solenoid
Rear hold solenoid
Rear release solenoid
“ABS” warning lamp
Idle-up
ECM
Data link connector
ABS hydraulic unit/control
module assembly
Page 329 of 687
Downloaded from www.Manualslib.com manuals search engine 5E-12 ANTILOCK BRAKE SYSTEM (ABS)
System Circuit
C1057 57 Power source
C1061 61 ABS pump motor circuit
C1063 63 ABS solenoid valve circuit
C1071 71 ABS control module
1. Battery 5-5. Solenoid valves 14. Stop lamp switch
2. Main fuses 6. Combination meter 15. ECM
3. Ignition switch 7. Right rear wheel speed sensor 16. G sensor
4. Circuit fuses 8. Left rear wheel speed sensor 17. 4WD switch (for 4WD model only)
5. ABS hydraulic unit / control module assem-
bly9. Right front wheel speed sensor 18. 4WD indicator lamp (for 4WD model only)
5-1. Terminal arrangement for ABS hydraulic unit
/ control module assembly10. Left front wheel speed sensor 19. 4WD controller (for 4WD model only)
5-2. ABS fail-safe transistor 11. Data link connector 20.“ABS” warning lamp
5-3. ABS pump motor transistor 12. Monitor connector 21. ABS lamp driver module
5-4. Pump motor 13. Stop lamp
DTC
(displayed on
SUZUKI scan
tool)DTC
(indicated by
ABS warn-
ing lamp)ABS warning light flashing
patternDIAGNOSTIC ITEMS
Page 359 of 687
Downloaded from www.Manualslib.com manuals search engine 6-2 ENGINE GENERAL INFORMATION AND DIAGNOSIS
Diagnostic trouble code (DTC) table ......... 6-16
Fail-safe table............................................ 6-19
Visual inspection ....................................... 6-20
Engine basic inspection ............................ 6-21
Engine diagnosis table .............................. 6-23
Scan Tool Data ............................................. 6-28
Scan tool data definitions .......................... 6-30
Inspection of ECM and Its Circuits ................ 6-33
Component Location ..................................... 6-42
Table A-1 Malfunction Indicator Lamp Circuit
Check - Lamp Does Not Come “ON” at Ignition
Switch ON (But Engine at Stop).................... 6-43
Table A-2 Malfunction Indicator Lamp Circuit
Check - Lamp Remains “ON” after Engine
Starts............................................................. 6-44
Table A-3 Malfunction Indicator Lamp Circuit
Check - Mil Flashes at Ignition Switch ON .... 6-45
Table A-4 Malfunction Indicator Lamp Circuit
Check - MIL Does Not Flash, Just Remains
ON or Just Remains OFF Even with Grounding
Diagnosis Switch Terminal............................ 6-45
Table A-5 ECM Power and Ground Circuit
Check - MIL Doesn’t Light at Ignition Switch
ON and Engine Doesn’t Start Though It Is
Cranked Up ................................................... 6-46
DTC P0105 (DTC No.11) Manifold Absolute
Pressure (MAP) Circuit Malfunction .............. 6-48
DTC P0110 (DTC No.18) Intake Air Temp.
(IAT) Circuit Malfunction ............................... 6-51
DTC P0115 (DTC No.19) Engine Coolant
Temperature (ECT) Circuit Malfunction ........ 6-53
DTC P0120 (DTC No.13) Throttle Position
Circuit Malfunction ........................................ 6-55
DTC P0121 Throttle Position Circuit Range /
Performance Problem ................................... 6-57
DTC P0130 (DTC No.14) Heated Oxygen
Sensor (HO2S) Circuit Malfunction
(Sensor-1) ..................................................... 6-59
DTC P0133 Heated Oxygen Sensor (HO2S)
Circuit Slow Response (Sensor-1) ................ 6-61
DTC P0135 (DTC No.14) Heated Oxygen
Sensor (HO2S) Heater Circuit Malfunction
(Sensor-1) ..................................................... 6-62
DTC P0136 Heated Oxygen Sensor (HO2S)
Circuit Malfunction (Sensor-2) ...................... 6-64
DTC P0141 Heated Oxygen Sensor (HO2S)
Heater Circuit Malfunction (Sensor-2)........... 6-66
DTC P0171 Fuel System Too Lean .............. 6-68
DTC P0172 Fuel System Too Rich ............... 6-68
DTC P0300 Random Misfire Detected
(Misfire Detected at 2 or More Cylinders) ..... 6-72DTC P0301 Cylinder 1 Misfire Detected ........ 6-72
DTC P0302 Cylinder 2 Misfire Detected ........ 6-72
DTC P0303 Cylinder 3 Misfire Detected ........ 6-72
DTC P0304 Cylinder 4 Misfire Detected ........ 6-72
DTC P0325 (DTC No.17) Knock Sensor Circuit
Malfunction .................................................... 6-77
DTC P0335 (DTC No.23) Crankshaft Position
(CKP) Sensor Circuit Malfunction .................. 6-79
DTC P0340 (DTC No.15) Camshaft Position
(CMP) Sensor Circuit Malfunction ................. 6-82
DTC P0400 Exhaust Gas Recirculation Flow
Malfunction .................................................... 6-85
DTC P0420 Catalyst System Efficiency below
Threshold ....................................................... 6-88
DTC P0443 Purge Control Valve Circuit
Malfunction .................................................... 6-91
DTC P0481 A/C Condenser Fan Control
Circuit Malfunction ......................................... 6-92
DTC P0500 (DTC No.16) Vehicle Speed
Sensor (VSS) Malfunction ............................. 6-94
DTC P0505 Idle Control System
Malfunction .................................................... 6-96
DTC P0601 Internal Control Module Memory
Check Sum Error (DTC No.71) ...................... 6-98
DTC P1450 Barometric Pressure Sensor
Low / High Input ............................................. 6-99
DTC P1451 Barometric Pressure Sensor
Performance Problem .................................... 6-99
DTC P1500 Engine Starter Signal Circuit
Malfunction .................................................. 6-101
DTC P1510 ECM Back-up Power Supply
Malfunction .................................................. 6-103
DTC P1570 (DTC No.21) ABS Signal Circuit
Malfunction .................................................. 6-104
DTC P1600 Serial Communication Problem
Between ECM and TCM .............................. 6-105
DTC P1717 A/T Drive Range (Park / Neutral
Position) Signal Circuit Malfunction ............. 6-107
Table B-1 Fuel Injector Circuit Check ..........6-109
Table B-2 Fuel Pump and Its Circuit
Check........................................................... 6-110
Table B-3 Fuel Pressure Check................... 6-112
Table B-4 Idle Air Control System Check ....6-114
Table B-5 A/C Signal Circuits Check
(Vehicle with A/C) ........................................ 6-117
Table B-6 Electric Load Signal Circuit
Check........................................................... 6-119
TAble B-7 A/C Condenser Fan Control
System Check.............................................. 6-121
Special Tool ................................................... 6-123
Page 363 of 687
Downloaded from www.Manualslib.com manuals search engine 6-6 ENGINE GENERAL INFORMATION AND DIAGNOSIS
Engine Diagnosis
General Description
This vehicle is equipped with an engine and emission control system which are under control of ECM.
The engine and emission control system in this vehicle are controlled by ECM. ECM has an On-Board Diagnos-
tic system which detects a malfunction in this system and abnormality of those parts that influence the engine
exhaust emission. When diagnosing engine troubles, be sure to have full understanding of the outline of “On-
Board Diagnostic System” and each item in “Precaution in Diagnosing Trouble” and execute diagnosis accord-
ing to “ENGINE DIAGNOSTIC FLOW TABLE”.
There is a close relationship between the engine mechanical, engine cooling system, ignition system, exhaust
system, etc. and the engine and emission control system in their structure and operation. In case of an engine
trouble, even when the malfunction indicator lamp (MIL) doesn’t turn ON, it should be diagnosed according to
this flow table.
On-Board Diagnostic System (Vehicle with
Immobilizer Indicator Lamp)
ECM in this vehicle has 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 bulb 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 driv-
ing cycle detection logic is adopted to prevent erroneous
detection.
When a malfunction is detected, engine and driving condi-
tions then are stored in ECM memory as freeze frame data.
(For the details, refer to description on Freeze frame data.)
It is possible to communicate by using not only SUZUKI scan
tool (2) but also generic scan tool. (Diagnostic information
can be accessed by using a scan tool.)
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).
Page 364 of 687
Downloaded from www.Manualslib.com manuals search engine ENGINE GENERAL INFORMATION AND DIAGNOSIS 6-7
DRIVING CYCLE
A “Driving Cycle” consists of engine startup and engine shutoff.
2 DRIVING CYCLES DETECTION LOGIC
The malfunction detected in the first driving cycle is stored in
ECM memory (in the form of pending DTC and freeze frame data)
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.
FREEZE FRAME DATA
ECM stores the engine and driving conditions (in the from of data
as shown in the figure) at the moment of the detection of a mal-
function in its memory. This data is called “Freeze frame data”.
Therefore, it is possible to know engine and driving conditions
(e.g., whether the engine was warm or not, where the vehicle was
running or stopped, where air / fuel mixture was lean or rich)
when a malfunction was detected by checking the freeze frame
data. Also, ECM has a function to store each freeze frame data
for three different malfunctions in the order as the malfunction is
detected. Utilizing this function, it is possible to know the order of
malfunctions that have been detected. Its use is helpful when
rechecking or diagnosing a trouble.
Priority of freeze frame data :
ECM has 4 frames where the freeze frame data can be stored.
The first frame stores the freeze frame data of the malfunction
which was detected first. However, the freeze frame data stored
in this frame is updated according to the priority described below.
(If malfunction as described in the upper square “1” below is
detected while the freeze frame data in the lower square “2” has
been stored, the freeze frame data “2” will be updated by the
freeze frame data “1”.)
[A] : An Example of Freeze Frame Data
[B] : 1st, 2nd or 3rd in parentheses here represents which position in the order
the malfunction is detected.
PRIORITY FREEZE FRAME DATA IN FRAME 1
1Freeze frame data at initial detection of mal-
function among misfire detected (P0300 –
P0304), fuel system too lean (P0171) and fuel
system too rich (P0172)
2Freeze frame data when a malfunction other
than those in “1” above is detected
Page 365 of 687
Downloaded from www.Manualslib.com manuals search engine 6-8 ENGINE GENERAL INFORMATION AND DIAGNOSIS
In the 2nd through the 4th frames, the freeze frame data of each
malfunction is stored in the order as the malfunction is detected.
These data are not updated.
Shown in the table below are examples of how freeze frame data
are stored when two or more malfunctions are detected.
Freeze Frame Data Clearance :
The freeze frame data is cleared at the same time as clearance of
diagnostic trouble code (DTC).
DATA LINK CONNECTOR (DLC)
DLC (1) is in compliance with SAEJ1962 in its installation posi-
tion, the shape of connector and pin assignment.
Serial data line (K line of ISO 9141) (3) is used for SUZUKI scan
tool or generic scan tool to communicate with ECM, TCM, Air Bag
SDM and ABS control module.
SUZUKI serial data line (6) is used for SUZUKI scan tool to com-
municate with immobilizer control module.FRAME
FRAME 1 FRAME 2 FRAME 3 FRAME4
FREEZE FRAME
DATA to be updated1st FREEZE
FRAME DATA2nd FREEZE
FRAME DATA3rd FREEZE
FRAME DATA
MALFUNCTION
DETECTED
ORDERNo malfunction No freeze frame data
1 P0400 (EGR)
detectedData at P0400
detectionData at P0400
detection––
2 P0171 (Fuel sys-
tem) detectedData at P0171
detectionData at P0400
detectionData at P0171
detection–
3 P0300 (Misfire)
detectedData at P0171
detectionData at P0400
detectionData at P0171
detectionData at P0300
detection
4 P0301 (Misfire)
detectedData at P0171
detectionData at P0400
detectionData at P0171
detectionData at P0300
detection
2. B+
4. ECM ground
5. Body ground
Page 366 of 687
Downloaded from www.Manualslib.com manuals search engine ENGINE GENERAL INFORMATION AND DIAGNOSIS 6-9
On-Board Diagnostic System (Vehicle without
Immobilizer Indicator Lamp)
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 mal-
function indicator lamp (1).
Heated oxygen sensor (if equipped)
ECT sensor
TP sensor
IAT sensor
MAP sensor
CMP sensor
CKP sensor
Knock sensor
VSS
CPU (Central Processing Unit) of ECM
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) bulb 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 occur-
rence 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 below.)
ECM also indicates trouble area in memory by means of
flashing of malfunction indicator lamp (1) at the time of
inspection. (i.e. when connecting diagnosis switch terminal
(2) and ground terminal (4) of monitor connector (3) with a
service wire (5) and ignition switch is turned ON.)
NOTE:
When a trouble occurs in the above areas and disap-
pears soon while the diagnosis switch terminal is
ungrounded and the engine is running, malfunction
indicator lamp (1) lights and remains ON as long as the
trouble exists but it turns OFF when the normal condi-
tion is restored.
Time required to erase diagnostic trouble code mem-
ory thoroughly varies depending on ambient tempera-
ture as follows.
Page 367 of 687
Downloaded from www.Manualslib.com manuals search engine 6-10 ENGINE GENERAL INFORMATION AND DIAGNOSIS
Precaution in Diagnosing Trouble
Don’t disconnect couplers from ECM, battery cable at 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 generic scan tool. 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.
Priorities for diagnosing troubles (Vehicle with Immobilizer indicator lamp).
If multiple diagnostic trouble codes (DTCs) are stored, proceed to the flow table of the DTC which has
detected earliest in the order and follow the instruction in that table.
If no instructions are given, troubleshoot diagnostic trouble codes according to the following priorities.
–Diagnostic trouble codes (DTCs) other than DTC P0171/P0172 (Fuel system too lean / too rich), DTC
P0300/P0301/P0302/P0303/P0304 (Misfire detected) and DTC P0400 (EGR flow malfunction)
–DTC P0171/P0172 (Fuel system too lean / too rich) and DTC P0400 (EGR flow malfunction)
–DTC P0300/P0301/P0302/P0303/P0304 (Misfire detected)
Be sure to read “Precautions for Electrical Circuit Service” in Section 0A before inspection and observe what
is written there.
ECM Replacement
When substituting a known-good ECM, check for following conditions. Neglecting this check may cause
damage to a known-good ECM.
–Resistance value of all relays, actuators is as specified respectively.
–MAP sensor and TP sensor are in good condition and none of power circuits of these sensors is shorted
to ground.AMBIENT TEMPERATURE TIME TO CUT POWER TO
ECM
Over 0 °C (32 °F) 60 sec. or longer
Under 0 °C (32 °F)Not specifiable.
Select a place with higher than
0 °C (32 °F) temperature.