Wiring diagram for ignition SUZUKI GRAND VITARA 2001 2.G Owner's Manual

ENGINE GENERAL INFORMATION AND DIAGNOSIS (H27 ENGINE) 6-1-117
Fig. for Step 2
Table B-2 Fuel Injectors and Circuit Inspection
WIRING DIAGRAM
3 Fuel pump relay check :
1) Check fuel pump relay referring to “FUEL
PUMP RELAY INSPECTION” in Section
6E2.
Is it in good condition?“BLK/WHT” or “WHT/
GRN” circuit open or poor
E61-23 connection.
If wire and connection are
OK, substitute a known-
good ECM (PCM) and
recheck.Replace fuel pump relay. Step Action Yes No
1. Fuel pump relay connector
1. To ignition switch 4. Injector No.1 7. Injector No.4 10. ECM (PCM)
2. Main fuse 5. Injector No.2 8. Injector No.5
3. Main relay 6. Injector No.3 9. Injector No.6

ENGINE GENERAL INFORMATION AND DIAGNOSIS (H27 ENGINE) 6-1-123
Table B-5 A/C Signal Circuits Inspection (If Equipped)
WIRING DIAGRAM
INSPECTION
1. A/C control module (amplifier)
2. ECM (PCM)
Step Action Yes No
1 Check A/C Signal Circuit.
1) Check voltage at terminal E61-17 with ignition
switch ON.
A/C signal circuit specification :
A/C switch and/or heater blower switch OFF (A/
C is not operating) : 10 – 14 V
Both A/C switch and heater blower switch ON :
0 – 1.5 V
Are check result as specified?Go to Step 2.“YEL/BLK” circuit open or
short, Evaporative tem-
perature is below 1°C
(34°F) or faulty A/C sys-
tem.
2 Check A/C Cut Signal Circuit.
1) Check voltage at terminal E61-8.
A/C cut signal specification :
While engine running and A/C switch and/or
heater blower switch OFF
(A/C is not operating) : 0 – 1.5 V
While engine running at idle speed and both A/
C switch and heater blower switch ON
(A/C is operating) : 10 – 14 V
Are check result as specified?A/C control signal cir-
cuits are in good con-
dition.“GRY/WHT” circuit open
or short, Poor perfor-
mance of ECT sensor, TP
sensor, Engine start sig-
nal inputted or A/C ampli-
fier malfunction.
If none of the above
exists, substitute a
known-good ECM (PCM)
and recheck.

6-1-124 ENGINE GENERAL INFORMATION AND DIAGNOSIS (H27 ENGINE)
Table B-6 A/C Condenser Fan Motor Relay Control System Inspection (If
Equipped)
WIRING DIAGRAM
INSPECTION
1. To ignition switch 3. A/C fuse 5. A/C condenser fan motor
2. Main fuse 4. A/C condenser fan motor relay 6. ECM (PCM)
WARNING:
Keep hands, tools, and clothing away from A/C condenser fan to help prevent personal injury. This
fan is electric and can come on whether or not the engine is running. The fan can start automatically
in response to the ECT sensor with the ignition switch in the “ON” position.
Step Action Yes No
1 1) Check DTC referring to “DTC CHECK” in this sec-
tion.
Is there any malfunction DTC?Go to applicable DTC
Diag. Flow Table.Go to Step 2.
2 1) Check A/C condenser fan for operation.
A/C condenser fan should be operated under follow-
ing condition A or B only.
A : When engine is running and A/C is operating.
B : When engine coolant temp. is 113°C (235°F) or
more with ignition switch ON.
Is check result as specified?This system is in
good condition.Go to Step 3.
3 1) Remove ECM (PCM) cover.
2) Check voltage between E61-22 terminal of ECM
(PCM) connected coupler and ground.
Other than conditions A and B in Step 2 :
10 – 14 V
Under condition A or B in Step 2 :
0 – 1 V
Is check result as specified?Fuse blown, “RED”,
“RED/BLK” or “RED/
BLU” circuit open,
malfunction of con-
denser fan motor or
relay.“YEL/GRN” circuit
open, “YEL/BLU” cir-
cuit open or short, or
relay malfunction.
If above are OK, sub-
stitute a known-good
ECM (PCM) and
recheck.

ENGINE AND EMISSION CONTROL SYSTEM (SEQUENTIAL MULTIPORT FUEL INJECTION FOR H27 ENGINE) 6E2-1
6E2
SECTION 6E2
ENGINE AND EMISSION CONTROL SYSTEM
(SEQUENTIAL MULTIPORT FUEL INJECTION
FOR H27 ENGINE)
CONTENTS
General Description ..................................... 6E2-2
System Flow ............................................... 6E2-3
System Diagram ......................................... 6E2-4
Air Intake System ....................................... 6E2-6
Fuel Delivery System ................................. 6E2-7
Electronic Control System .......................... 6E2-8
Engine and Emission Control Input/Output
Table ........................................................ 6E2-12
Diagnosis .................................................... 6E2-12
On-Vehicle Service..................................... 6E2-13
General .................................................... 6E2-13
Accelerator Cable Adjustment .................. 6E2-14
A/T Throttle Cable Adjustment
(A/T Vehicle) ............................................ 6E2-14Idle Speed/Idle Air Control (IAC) Duty
Inspection................................................. 6E2-15
[Using SUZUKI scan tool] .................... 6E2-15
[Not using SUZUKI scan tool]
(vehicle with monitor connector) .......... 6E2-16
Idle mixture inspection/adjustment
(vehicle without heated oxygen sensor) 6E2-17
Air Intake System ..................................... 6E2-18
Throttle body ........................................ 6E2-18
Idle air control valve (IAC valve) .......... 6E2-21
Fast idle air valve ................................. 6E2-22
Fuel Delivery System ............................... 6E2-23
Fuel pressure inspection ...................... 6E2-23
Fuel pump ............................................ 6E2-24
Fuel pressure regulator ........................ 6E2-25 WARNING:
For vehicles equipped with Supplemental Restraint (Air Bag) System:
Service on and around the air bag system components or wiring must be performed only by an
authorized SUZUKI dealer. Refer to “Air Bag System Components and Wiring Location View” under
“General Description” in air bag system section in order to confirm whether you are performing ser-
vice on or near the air bag system components or wiring. Please observe all WARNINGS and “Ser-
vice Precautions” under “On-Vehicle Service” in air bag system section before performing service
on or around the air bag system components or wiring. Failure to follow WARNINGS could result in
unintentional activation of the system or could render the system inoperative. Either of these two
conditions may result in severe injury.
Technical service work must be started at least 90 seconds after the ignition switch is turned to the
“LOCK” position and the negative cable is disconnected from the battery. Otherwise, the system
may be activated by reserve energy in the Sensing and Diagnostic Module (SDM).
NOTE:
Whether following systems (parts) are used in the particular vehicle or not depends on specifications.
Be sure to bear this in mind when performing service work.
Monitor connector
CKP sensor
MAP sensor
EGR valve
Heated oxygen sensor or CO adjusting resistor
Three way catalytic converter, Warm-up three way catalytic converter

AUTOMATIC TRANSMISSION (4 A/T) 7B1-1
7B1
SECTION 7B1
AUTOMATIC TRANSMISSION (4 A/T)
CONTENTS
General Description ......................................7B1-3
Electronic Shift Control System ................... 7B1-4
Automatic gear shift diagram................... 7B1-5
Diagnosis .......................................................7B1-7
On-Board Diagnostic System
(Vehicle without monitor connector) ............ 7B1-7
On-Board Diagnostic System
(Vehicle with monitor connector) ................. 7B1-8
Precaution in Diagnosing Trouble ............... 7B1-9
Automatic Transmission Diagnostic Flow
Table ......................................................... 7B1-10
Malfunction Indicator Lamp (MIL) Check... 7B1-13
“O/D OFF” Lamp Check ............................ 7B1-13
“POWER” Lamp Check ............................. 7B1-13
Diagnostic Trouble Code (DTC) Check ..... 7B1-13
Diagnostic Trouble Code Clearance ......... 7B1-13
Diagnostic Trouble Code Table ................. 7B1-14
Fail Safe Table .......................................... 7B1-14
Visual Inspection ....................................... 7B1-14
A/T Basic Check ........................................ 7B1-14
Trouble Diagnosis Table 1 ........................ 7B1-15
Trouble Diagnosis Table 2 ........................ 7B1-15
Trouble Diagnosis Table 3 ........................ 7B1-16
Scan Tool Data ......................................... 7B1-17
Inspection of PCM and Its Circuit .............. 7B1-17Wire Harness and Connectors .................. 7B1-17
Table A-1 : No TCC Lock-Up Occurs ........ 7B1-18
Table A-2 : No Gear Shift to O/D .............. 7B1-20
Table B-1 : “O/D OFF” Light Circuit Check
(“O/D OFF” Light Doesn’t Light at Ignition
Switch ON But Engine Starts Up) ............. 7B1-22
Table B-2 : “O/D OFF” Light Circuit Check
(“O/D OFF” Light Comes ON Steadily) ..... 7B1-23
Table B-3 : “POWER” Light Circuit Check
(“POWER” Light Doesn’t Light at Ignition
Switch ON But Engine Starts Up) ............. 7B1-24
Table B-4 : “POWER” Light Circuit Check
(“POWER” Light Comes ON Steadily) ...... 7B1-25
DTC P0705 (DTC NO.72) - Transmission
Range Sensor (Switch) Circuit Malfunction7B1-26
DTC P0715 (DTC NO.76) - Input/Turbine
Speed Sensor Circuit Malfunction............. 7B1-29
DTC P0720 (DTC NO.75) Output Speed
Sensor Circuit Malfunction ........................ 7B1-32
DTC P0743 (DTC NO.65/66) -
TCC (Lock-Up) Solenoid Electrical ........... 7B1-34
DTC P0753 (DTC NO.61/62)
Shift Solenoid-A (#1) Electrical
DTC P0758 (DTC NO.63/64)
Shift Solenoid-B (#2) Electrical ................. 7B1-36 WARNING:
For vehicles equipped with Supplemental Restraint (Air Bag) System:
Service on and around the air bag system components or wiring must be performed only by an
authorized SUZUKI dealer. Refer to “Air Bag System Components and Wiring Location View” under
“General Description” in air bag system section in order to confirm whether you are performing ser-
vice on or near the air bag system components or wiring. Please observe all WARNINGS and “Ser-
vice Precautions” under “On-Vehicle Service” in air bag system section before performing service
on or around the air bag system components or wiring. Failure to follow WARNINGS could result in
unintentional activation of the system or could render the system inoperative. Either of these two
conditions may result in severe injury.
Technical service work must be started at least 90 seconds after the ignition switch is turned to the
“LOCK” position and the negative cable is disconnected from the battery. Otherwise, the system
may be activated by reserve energy in the Sensing and Diagnostic Module (SDM).
NOTE:
For the descriptions (items) not found in this section, refer to the same section of the Service Manual
mentioned in FOREWORD of this manual.

AUTOMATIC TRANSMISSION (4 A/T) 7B1-23
Table B-2 : “O/D OFF” Light Circuit Check (“O/D OFF” Light Comes ON
Steadily)
WIRING DIAGRAM
Refer to “TABLE B-1” in this section.
TROUBLESHOOTING
[A] for Step 1/[B] for Step 4Step Action Yes No
1 Check O/D off switch status.
Press O/D off switch button (1).
Does “O/D OFF” lamp come ON steadily?Go to Step 2. System is OK.
2 Check lamp circuit for short.
1) Turn ignition switch OFF and disconnect
PCM connectors.
2) Turn ignition switch ON.
Does “O/D OFF” lamp come ON steadily?“WHT/BLK” circuit
shorted to ground.Go to Step 3.
3 Check O/D off switch circuit.
1) Check resistance between terminal E61-33
of disconnected PCM connector and body
ground with O/D off switch button (1)
released.
Is continuity indicated?Go to Step 4. Check PCM ground circuit
for open.
If ground circuit is OK,
substitute a known-good
PCM and recheck.
4 Check O/D off switch for operation.
1) Remove console box.
2) Disconnect O/D off switch connector.
3) Check continuity between switch terminals
under each condition below.
O/D switch operation
With O/D off switch button (1) released :
No continuity
With O/D off switch button (1) pressed :
Continuity
Is check result satisfactory?“YEL/RED” circuit shorted
to ground.Replace O/D off switch.

AUTOMATIC TRANSMISSION (4 A/T) 7B1-25
Table B-4 : “POWER” Light Circuit Check (“POWER” Light Comes ON
Steadily)
WIRING DIAGRAM
Refer to “TABLE B-3” in this section.
TROUBLESHOOTING
[A] for Step 1/[B] for Step 4Step Action Yes No
1 Check Power/Normal change switch position.
Is switch button at Normal position?Go to Step 2. Set Power/Normal
change switch at Nor-
mal position.
2 Check lamp circuit for short.
1) Turn ignition switch OFF and disconnect PCM
connectors.
2) Turn ignition switch ON.
Does “POWER” lamp come ON steadily?“GRY/BLU” circuit
shorted to ground.Go to Step 3.
3 Check Power/Normal change switch circuit.
1) Check resistance between terminal E61-31 of dis-
connected PCM connector and body ground with
P/N change switch OFF.
Is continuity indicated?Go to Step 4. Check PCM ground
circuit for open.
If ground circuit is OK,
substitute a known-
good PCM and
recheck.
4 Check Power/Normal change switch for operation.
1) Remove Power/Normal change switch.
2) Check continuity between switch terminals “4” and
“5” under each condition below.
Normal position: No continuity
Power position: Continuity.
Is check result satisfactory?“ORN/BLU” circuit
shorted to ground.Replace Power/Normal
change switch.

7B1-32 AUTOMATIC TRANSMISSION (4 A/T)
DTC P0720 (DTC NO.75) Output Speed Sensor Circuit Malfunction
WIRING DIAGRAM
DTC DETECTING CONDITION AND TROUBLE AREA
DTC CONFIRMATION PROCEDURE
1) Connect scan tool to DLC with ignition switch OFF, if available.
2) Clear DTC, pending DTC and freeze frame data in PCM memory by using scan tool.
3) Start engine and shift transfer lever to “2H” or “4H” range.
4) Drive vehicle at 40 km/h (25 mile/h) or more for longer than 10 sec. (or higher than 3500 r/min engine speed
with “D” range for longer than 10 sec.)
5) Stop vehicle and check DTC and/or pending DTC.
1. PCM
2. Output shaft speed sensor
DTC DETECTING CONDITION TROUBLE AREA
•With 4WD LOW switch OFF, no output shaft speed
sensor signal is inputted while vehicle speed sensor
signal are inputted,
or
•With 4WD LOW switch OFF, no output shaft speed
sensor signal is inputted while engine running at
higher than specified engine speed with “D” range.
(2 driving cycle detection logic)•Output speed sensor or its circuit
•PCM
WARNING:
When performing a road test, select a place where there is no traffic or possibility of a traffic acci-
dent and be very careful during testing to avoid occurrence of an accident.
Road test should be carried out with 2 persons, a driver and a tester, on a level road.

BODY ELECTRICAL SYSTEM 8-1
6F1
6F2
6G
6H
6K
7A
8
6K
7C1
7D
7E
7F
8A
8D
8E
9
10
10A
10B
SECTION 8
BODY ELECTRICAL SYSTEM
Wiring System
(Harnesses, Connectors, Fuses, Relay, Switches, Grounds, System Circuit Diagram) .......... Section 8A
Lighting System .............................................................................................................................. Section 8B
Instrumententation and Driver Information .................................................................................. Section 8C
Windows, Mirrors, Security and Locks ......................................................................................... Section 8D
Immobilizer Control System............................................................................................................Section 8F
CONTENTS
General Description .......................................... 8-3

WARNING:
For vehicles equipped with Supplemental Restraint (Air Bag) System:
Service on and around the air bag system components or wiring must be performed only by an
authorized SUZUKI dealer. Refer to “Air Bag System Components and Wiring Location View” under
“General Description” in air bag system section in order to confirm whether you are performing ser-
vice on or near the air bag system components or wiring. Please observe all WARNINGS and “Ser-
vice Precautions” under “On-Vehicle Service” in air bag system section before performing service
on or around the air bag system components or wiring. Failure to follow WARNINGS could result in
unintentional activation of the system or could render the system inoperative. Either of these two
conditions may result in severe injury.
Technical service work must be started at least 90 seconds after the ignition switch is turned to the
“LOCK” position and the negative cable is disconnected from the battery. Otherwise, the system
may be activated by reserve energy in the Sensing and Diagnostic Module (SDM).
NOTE:
For the descriptions (items) not found in this section, refer to the same section of the Service Manual
mentioned in FOREWORD of this manual.

CRUISE CONTROL SYSTEM 8E-1
6F1
6F2
6G
6H
6K
7A
7A1
7B1
7C1
7D
7E
8E
8A
8B
8C
8D
8B
9
10
10A
10B
SECTION 8E
CRUISE CONTROL SYSTEM
CONTENTS
General Description ....................................... 8E-2
Cautions in Servicing ................................... 8E-2
Symbols and Marks ...................................... 8E-2
Abbreviations ............................................... 8E-2
Wiring Color Symbols ................................... 8E-2
Joint Connector ............................................ 8E-2
Fuse Box and Relay ..................................... 8E-2
Power Supply Diagram ................................ 8E-2
Cruise Control System ................................. 8E-3
Cruise control system circuit .................... 8E-3
Components and functions....................... 8E-4
Cancel Conditions .................................... 8E-5
Diagnosis ........................................................ 8E-5
Diagnosis Table ........................................... 8E-5
Note on System Circuit Inspection ............... 8E-7
Cruise Main Switch Indicator Lamp
Circuit Check ................................................ 8E-8
“Cruise” Indicator Lamp Circuit Check ......... 8E-9
Cruise Main Switch, Coast/Set,
Resume/Accel and Cancel Switches
Circuits Check ............................................ 8E-10
VSS Circuit Check ...................................... 8E-11
Stop Lamp Switch (with Pedal Position
Switch) Circuits Check ............................... 8E-12Transmission Range Switch Circuit Check 8E-13
Clutch Pedal Position Switch Circuit Check 8E-14
Throttle Valve Opening Signal Circuit
Check ......................................................... 8E-15
Overdrive and TCC off Command Signal
Circuit Check.............................................. 8E-16
Cruise Control Module Power and Ground
Circuits Check ............................................ 8E-16
Cruise Control Module and Its Circuit
Inspection................................................... 8E-17
Cruise Cable Play Inspection and
Adjustment ................................................. 8E-19
On-Vehicle Service ...................................... 8E-19
Cruise Main Switch .................................... 8E-19
Coast/Set, Resume/Accel and Cancel
Switches..................................................... 8E-20
Vehicle Speed Sensor (VSS) ..................... 8E-20
Transmission Range Switch ...................... 8E-20
Clutch Pedal Position (CPP) Switch .......... 8E-21
Stop Lamp Switch (with Pedal Position
Switch) ....................................................... 8E-22
Cruise Control Actuator Assembly
(with Control Module) ................................. 8E-23
Cruise Cable .............................................. 8E-24

WARNING:
For vehicles equipped with Supplemental Restraint (Air Bag) System:
Service on and around the air bag system components or wiring must be performed only by an
authorized SUZUKI dealer. Refer to “Air Bag System Components and Wiring Location View” under
“General Description” in air bag system section in order to confirm whether you are performing ser-
vice on or near the air bag system components or wiring. Please observe all WARNINGS and “Ser-
vice Precautions” under “On-Vehicle Service” in air bag system section before performing service
on or around the air bag system components or wiring. Failure to follow WARNINGS could result in
unintentional activation of the system or could render the system inoperative. Either of these two
conditions may result in severe injury.
Technical service work must be started at least 90 seconds after the ignition switch is turned to the
“LOCK” position and the negative cable is disconnected from the battery. Otherwise, the system
may be activated by reserve energy in the Sensing and Diagnostic Module (SDM).