fuel relay SUZUKI GRAND VITARA 2003 2.G Service Workshop Manual

YH4
GRAND
VITARA
7B1-20 AUTOMATIC TRANSMISSION (4 A / T)
PRECAUTION IN DIAGNOSING TROUBLE

Don't disconnect couplers from PCM (ECM), battery cable from battery, PCM ground wire harness from engine
or main fuse before checking the diagnosis information (DTC, freeze frame data, etc.) stored in PCM memory.
Such disconnection will clear memorized information in PCM memory.

Using SUZUKI scan tool (Tech-1), or also generic scan tool for vehicle without monitor connector, the diagnostic
information stored in PCM memory can be checked and cleared as well. Before its use, be sure to read Operator's
(instruction) Manual supplied with it carefully to have good understanding of its functions and usage.

Priorities for diagnosing troubles (Only for vehicle without monitor connector)
If two or more diagnostic trouble codes (DTCs) are stored, proceed to the flow table of the DTC which was de-
tected 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.
1. Diagnostic trouble codes (DTCs) other than DTC P0171 / P0172 (Fuel system too lean / too rich) and DTC
P0400 (EGR flow malfunction)
2. DTC P0171 / P0172 (Fuel system too lean / too rich) and DTC P0400 (EGR flow malfunction)

Be sure to read ªPrecautions for Electrical Circuit Serviceº in Section 0A before inspection and observe what is
written there.

PCM replacement
When substituting a known-good PCM, check for following conditions.
Neglecting this check may result in damage to good PCM.
± All relays and actuators have resistance of specified value.
± MAF sensor, MDP sensor, TP sensor and fuel tank pressure sensor are in good condition. Also, the power
circuit of these sensors is not shorted to the ground.

YH4
GRAND
VITARA
8C
INSTRUMENTATION / DRIVER INFORMATION 8C-1
GENERAL DESCRIPTION8C- 2 . . . . . . . . . . . . . .
Cautions in Servicing 8C- 2. . . . . . . . . . . . . . . . .
Symbols and Marks 8C- 2. . . . . . . . . . . . . . . . . . .
Wiring Color Symbols 8C- 2. . . . . . . . . . . . . . . . .
Abbreviations 8C- 2. . . . . . . . . . . . . . . . . . . . . . . .
Joint Connector 8C- 2. . . . . . . . . . . . . . . . . . . . . .
Fuse Box and Relay 8C- 2. . . . . . . . . . . . . . . . . .
Power Supply Diagram 8C- 2. . . . . . . . . . . . . . . .
Combination Meter 8C- 2. . . . . . . . . . . . . . . . . . .
DIAGNOSIS8C- 4 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Speedometer and VSS 8C- 4. . . . . . . . . . . . . . . .
Fuel Meter / Fuel Gauge Unit 8C- 4. . . . . . . . . . . .
Engine Coolant Temp. (ECT) Meter and
Sensor 8C- 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Pressure Light 8C- 4. . . . . . . . . . . . . . . . . . . .
Brake and Parking Brake Warning
Light 8C- 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Light Remainder Warning Buzzer 8C- 5. . . . . . . Seat Belt Warning Light (If Equipped) 8C- 5. . .
Ignition Key Remainder Warning
Buzzer (If Equipped) 8C- 5. . . . . . . . . . . . . . . . .
Cigarette Lighter and Accessory Socket 8C- 5.
ON-VEHICLE SERVICE8C- 6 . . . . . . . . . . . . . . . .
Ignition (Main) Switch 8C- 6. . . . . . . . . . . . . . . . .
Combination Meter 8C- 7. . . . . . . . . . . . . . . . . . .
Speedometer and VSS 8C- 8. . . . . . . . . . . . . . . .
Fuel Meter / Fuel Gauge Unit 8C- 9. . . . . . . . . . . .
Engine Coolant Temp. (ECT) Meter and
Sensor 8C-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Pressure Light 8C-11. . . . . . . . . . . . . . . . . . . .
Brake and Parking Brake Warning
Light 8C-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition Key Remainder (If Equipped) /
Light Remainder Warning Buzzer 8C-12. . . . . .
Door Switch 8C-13. . . . . . . . . . . . . . . . . . . . . . . . .
Seat Belt Warning Light (If Equipped) 8C-13. . .
SECTION 8C
INSTRUMENTATION/DRIVER INFORMATION
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 autho-
rized SUZUKI dealer. Refer to ªAir Bag System Components and Wiring Location Viewº under ªGener-
al Descriptionº in air bag system section in order to confirm whether you are performing service on
or near the air bag system components or wiring. Please observe all WARNINGS and ªService Precau-
tionsº under ªOn-Vehicle Serviceº 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
ªLOCKº 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).
CONTENTS

YH4
GRAND
VITARA
1. Tachometer
2. Speedometer
3. Fuel level meter
4. Water temperature meter
5. Turn signal pilot light (LH)
6. 4WD indicator (if equipped)
7. ABS warning light (if equipped)
8. Immobilizer warning light (if equipped)
9. CHECK ENGINE light
10. Turn signal pilot light (RH)11. AIR BAG warning light (if equipped)
12. O / D OFF light (A / T vehicle only)
13. Fasten seat belt light (if equipped)
14. High beam light
15. Oil pressure warning light
16. Charge warning light
17. Brake and parking brake warning light
18. POWER indicator light (A / T vehicle only)
19. Shift position indicator (A / T vehicle, if equipped)or
CHECK
ENGINEor
ABS
8C-2 INSTRUMENTATION / DRIVER INFORMATION
GENERAL DESCRIPTION
CAUTIONS IN SERVICING
Refer to Section 8.
SYMBOLS AND MARKS
Refer to Section 8.
WIRING COLOR SYMBOLS
Refer to Section 8.
ABBREVIATIONS
Refer to Section 8.
JOINT CONNECTOR
Refer to Section 8.
FUSE BOX AND RELAY
Refer to Section 8.
POWER SUPPLY DIAGRAM
Refer to Section 8.
COMBINATION METER