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Engine Controls - Service & Adjustment Specifications: Other Suzuki Vitara I

Specifications 10 illustrations ~212 words

ENGINE COMPRESSION

Note. Check engine compression with engine at normal operating temperature, at specified cranking speed, all spark plugs removed and throttle wide open.

ApplicationSpecification
Compression Pressure (1)
Aerio
Standard199 psi (14.0 kg/cm 2 )
Limit(2) 170 psi (12.0 kg/cm 2 )
Grand Vitara & XL-7
Standard199-228 psi (14.0-16.0 kg/cm 2 )
Limit(2) 185 psi (13.0 kg/cm 2 )
Vitara
Standard199 psi (14.0 kg/cm 2 )
Limit(2) 170 psi (12 .0 kg/cm 2 )
(1) Checked with engine at normal operating temperature, engine turning at 250 RPM. (2) Maximum variation between cylinders is 14.2 psi (1.0 kg/cm 2 ).
(1)Checked with engine at normal operating temperature, engine turning at 250 RPM.
(2)Maximum variation between cylinders is 14.2 psi (1.0 kg/cm 2 ).

COMPRESSION SPECIFICATIONS

VALVE CLEARANCE

ApplicationIn. (mm)
All Models(1)
(1) Hydraulic valve lash adjusters are used and no adjustment is required.
(1)Hydraulic valve lash adjusters are used and no adjustment is required.

VALVE CLEARANCE SPECIFICATIONS

SPARK PLUGS

ApplicationSpark Plug Type (No.)
All ModelsNGK (IFR5J11) (1) Or Denso (K20PR-U11)
(1) Manufacturer recommends NGK plug for better engine starting performance.
(1)Manufacturer recommends NGK plug for better engine starting performance.

SPARK PLUG TYPE

ApplicationGap In. (mm)Torque Ft. Lbs. (N.m)
All Models.039-.043 (1.0-1.1)18 (25)

SPARK PLUG GAP & TORQUE SPECIFICATIONS

Firing Order

EngineFiring Order
2.0L(1) 1-3-4-2
2.5L & 2.7L(2) 1-6-5-4-3-2
(1) (Scheme 1) (2) (Scheme 2)

CYLINDER FIRING ORDERS

Scheme 1

Scheme 1: Firing Order (4-Cylinders)
Scheme 1: Firing Order (4-Cylinders)

Scheme 2

Scheme 2: Firing Order (V6-Cylinders)
Scheme 2: Firing Order (V6-Cylinders)

Scheme 3

Scheme 3: Timing Marks (Aerio)
Scheme 3: Timing Marks (Aerio)

Scheme 4

Scheme 4: Timing Mark (Grand Vitara & XL-7)
Scheme 4: Timing Mark (Grand Vitara & XL-7)

Scheme 5

Scheme 5: Timing Mark (Vitara)
Scheme 5: Timing Mark (Vitara)

IGNITION TIMING

Note. After checking ignition timing, disconnect Suzuki scan tool and ensure ignition timing advances as engine speed increases.

Application(1) Timing Setting
2.0L (2)(3) 4-6 BTDC @ 700-800
2.5L (2)(3) 4-6 BTDC @ 625-725
2.7L (2)(3) 4-6 BTDC @ 640-740
(1) (Scheme 3)- (Scheme 5) for timing mark location. (2) Adjust CMP sensor to change ignition timing. (Scheme 7)- (Scheme 9) (3) Connect Suzuki scan tool to DLC and set to Fixed Spark Mode when checking timing. (Scheme 6)
(1)(Scheme 3)- (Scheme 5) for timing mark location.
(2)Adjust CMP sensor to change ignition timing. (Scheme 7)- (Scheme 9)
(3)Connect Suzuki scan tool to DLC and set to Fixed Spark Mode when checking timing. (Scheme 6)

IGNITION TIMING (Degrees BTDC @ RPM) (1)

Scheme 6

Scheme 6: Data Link Connector & Suzuki Scan Tool
Scheme 6: Data Link Connector & Suzuki Scan Tool

Scheme 7

Scheme 7: Adjusting Ignition Timing (Aerio)
Scheme 7: Adjusting Ignition Timing (Aerio)

Scheme 8

Scheme 8: Adjusting Ignition Timing (Grand Vitara & XL-7)
Scheme 8: Adjusting Ignition Timing (Grand Vitara & XL-7)

Scheme 9

Scheme 9: Adjusting Ignition Timing (Vitara)
Scheme 9: Adjusting Ignition Timing (Vitara)

FUEL PUMP

ApplicationPsi (kg/cm 2 )
Aerio (1)
Key On Engine Off38.4-44.0 (2.7-3.1)
Engine Running31.3-36.9 (2.2-2.6)
Grand Vitara & XL-7 (1)
Key On Engine Off38.4-44.0 (2.7-3.1)
Engine Running29.8-37.0 (2.1-2.6)
Vitara (2)
Key On Engine Off35.6-42.7 (2.5-3.0)
Engine Running29.9-37.0 (2.1-2.6)
(1) Pressure should maintain at least 28.4 psi (2.0 kg/cm 2 ) for one minute after fuel pump is turned off. (2) Pressure should maintain at least 25.6 psi (1.8 kg/cm 2 ) for one minute after fuel pump is turned off.
(1)Pressure should maintain at least 28.4 psi (2.0 kg/cm 2 ) for one minute after fuel pump is turned off.
(2)Pressure should maintain at least 25.6 psi (1.8 kg/cm 2 ) for one minute after fuel pump is turned off.

FUEL PUMP PERFORMANCE

INJECTOR RESISTANCE

Note. Perform all voltage and resistance tests using a Digital Volt-Ohm Meter (DVOM) with a minimum 10-megohm input impedance.

Application(1) Ohms
Aerio10.8-13.2
Grand Vitara & XL-714.2-14.8
Vitara13.0-16.0
(1) Measured at 68°F (20°C).
(1)Measured at 68°F (20°C).

INJECTOR RESISTANCE SPECIFICATIONS

IDLE SPEED

Note. Idle speed is not adjustable on all models, except on Aerio model. Idle speed is controlled by Powertrain Control Module (PCM).

Application(1) Idle RPM
Aerio
A/C Off700-800
A/C On
A/T700-800
M/T800-900
Grand Vitara
A/C Off700-800
A/C On750-850
Vitara
A/C Off700-800
A/C On750-850
XL-7
A/C Off640-740
A/C On700-800
(1) Transaxle or transmission in Neutral or Park, unless stated otherwise in test procedure.
(1)Transaxle or transmission in Neutral or Park, unless stated otherwise in test procedure.

IDLE SPEED SPECIFICATIONS

FAST IDLE & AIR/FUEL MIXTURE

Note. Fast idle speed and air/fuel mixture are controlled by Powertrain Control Module (PCM) based on various sensor inputs.

THROTTLE POSITION SENSOR

Note. Perform all voltage and resistance tests using a Digital Volt-Ohm Meter (DVOM) with a minimum 10-megohm input impedance.

Application(1) Ohms
Aerio
Between Terminals No. 1 & 2100-6500
Between Terminals No. 1 & 3 (2)4000-6000
Grand Vitara & XL-7
Between Terminals No. 1 & 34000-6000
Between Terminals No. 2 & 3 (2)0-4600
Vitara
Between Terminals No. 1 & 2 (2)20-6000
Between Terminals No. 1 & 34000-6000
XL-7
Between Terminals No. 1 & 2 (2)20-6000
Between Terminals No. 1 & 34000-6000
(1) (Scheme 10)for terminal identification. (2) Varying depending on degree of throttle valve opening.
(1)(Scheme 10)for terminal identification.
(2)Varying depending on degree of throttle valve opening.

THROTTLE POSITION SENSOR RESISTANCE

Scheme 10

Scheme 10
Scheme 10
Application(1) Volts
Aerio (2) (3)
Throttle Fully Close.35-.65
Throttle Fully Open3.5-4.5
Grand Vitara (2) (3)
Throttle Fully Close.35-.65
Throttle Fully Open3.5-4.5
Vitara (2) (3)
Throttle Fully Close.50-1.2
Throttle Fully Open3.4-4.7
XL-7 (2) (3)
Throttle Fully Close.49-.91
Throttle Fully Open3.76-4.36
(1) Ignition ON engine off. (2) Measure TP sensor voltage using Suzuki scan tool connected to DLC and ignition switch in LOCK position. (Scheme 6) (3) With engine at normal operating temperature.
(1)Ignition ON engine off.
(2)Measure TP sensor voltage using Suzuki scan tool connected to DLC and ignition switch in LOCK position. (Scheme 6)
(3)With engine at normal operating temperature.

THROTTLE POSITION SENSOR VOLTAGE

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