Suzuki Grand Vitara JB419. Service manual — part 11

Engine General Information and Diagnosis: 1A-21

NOTE

• For indicator / warning light operation of items with *, refer to corresponding Faulty Finding – Fault

Interpretation in this section.

• “–” marked in above table indicates that indicator / warning light does not light.

)

P0641

Sensor Reference Voltage “A” Circuit /
Open

—

1 driving cycle

—

)

P0645

A/C Clutch Relay Control Circuit

—

)

P0651

Sensor Reference Voltage “B” Circuit /
Open

*3 driving

cycles

*1 driving cycle

—

)

P0670

Glow Plug Module Control Circuit

—

1 driving cycle

—

)

P0685

ECM/PCM Power Relay Control Circuit /
Open

—

1 driving cycle

—

)

P0697

Sensor Reference Voltage “C” Circuit /
Open

—

1 driving cycle

)

P0830

Clutch Pedal Switch “A” Circuit

—

)

P1431

Clogged Particulate Filter Failures

—

1 driving cycle

—

)

P1436

Regeneration Request failures

—

)

P1480

Defective Particulate Filter Inlet Pick-Off
Failures

—

1 driving cycle

—

)

P1641

Additional heater relay No.1 control circuit

—

)

P1642

Additional heater relay No.2, 3 control
circuit

—

)

P2002

Particulate Trap Efficiency Below Threshold 1 driving cycle

1 driving cycle

—

)

P2031

Exhaust Gas Temperature Sensor Circuit

—

1 driving cycle

—

)

P2120

Throttle/Pedal Position Sensor/Switch “D”
Circuit

—

1 driving cycle

—

)

P2141

Exhaust Gas Recirculation Throttle Control
Circuit Low

—

1 driving cycle

—

)

P2142

Exhaust Gas Recirculation Throttle Control
Circuit High

—

1 driving cycle

—

)

P2264

Water in Fuel Sensor Circuit

—

)

P2413

Exhaust Gas Recirculation System
Performance

*3 driving

cycles

)

P242A

Turbine Inlet Temperature Sensor and
Wake-up Sensor Failure

1 driving cycle

—

)

P242B

Turbine Inlet Temperature Sensor
Regulation Failure

—

1 driving cycle

—

)

P2600

Coolant Pump Control circuit / open

—

1 driving cycle

—

)

P3031

Temperature Threshold Overshoot Failures
During After-sales Regeneration

—

DTC No. (SUZUKI

scan tool)

Detecting Item

Malfunction

Indicator

Lamp (MIL)

Injection

Warning Light

(Gravity 1 Fault)

Red Stop

Warning Light

(Gravity 2 Fault)

1A-22 Engine General Information and Diagnosis:

Scan Tool Data

S5JB0B1104165

As the data values below are standard values estimated on the basis of values obtained from the normally operating
vehicles by using a SUZUKI scan tool, use them as reference values. Even when the vehicle is in good condition,
there may be cases where the checked value does not fall within each specified data range. Therefore, judgment as
abnormal should not be made by checking with these data alone. Also, conditions that can be checked by the SUZUKI
scan tool are those detected by ECM and output from ECM as commands and there may be cases where the engine
or actuator is not operating (in the condition) as indicated by the SUZUKI scan tool.

NOTE
When checking the data with the engine running at idle or racing, be sure to shift M/T gear to the
neutral position and pull the parking brake fully. Also, if nothing or “no load” is indicated, turn OFF A/
C, all electric loads and all the other necessary switches.

Scan tool data

Vehicle condition

Normal condition / reference

values

Engine Speed

At specified idle speed without engine load after
warming up to normal operating temperature (ECT: 80

°C, 176 °F – 85 °C, 185 °F)

750 – 850 RPM

Vehicle Speed

At stop

0 km/h

Coolant Temp

At specified idle speed without engine load after
warming up to normal operating temperature

°C – 100 °C

Intake Air Temp

At specified idle speed without engine load after
warming up to normal operating temperature
(Environmental temperature: about 20

°C, 68 °F)

–5

°C + environmental temp. to

°C + environmental temp.

Barometric Pres

—

Barometric pressure is displayed

Turbo Pressure

At specified idle speed without engine load after
warming up to normal operating temperature

900 hPa – 1100 hPa

Battery Voltage

Ignition switch ON / engine at stop

9 V – 16 V

Pedal position

Ignition switch ON

0 – 100%

EGR position sensor

At specified idle speed without engine load after
warming up to normal operating temperature

10% – 40%

MAF

At specified idle speed without engine load after
warming up to normal operating temperature (EGR
position: 0 – 40%)

260 mg/str – 520 mg/str

Fuel pressure

At specified idle speed without engine load after
warming up to normal operating temperature

22000 kPa – 32000 kPa

Metering unit duty

At specified idle speed without engine load after
warming up to normal operating temperature

35% – 45%

Differential pres

At specified idle speed without engine load after
warming up to normal operating temperature

5 hPa – 300 hPa

Diesel PF in Temp

At specified idle speed without engine load after
warming up to normal operating temperature

150

°C – 200 °C

Diesel PF out Temp

At specified idle speed without engine load after
warming up to normal operating temperature

~ 200

°C

Diesel PF soot mass

At specified idle speed without engine load after
warming up to normal operating temperature

~ 50 g

Distance from regeneration At specified idle speed without engine load after

warming up to normal operating temperature

Value taken since the last
dynamic regeneration (when
driving)

A/C Config

At specified idle speed without engine load after
warming up to normal operating temperature

Available

Water sensor Config

At specified idle speed without engine load after
warming up to normal operating temperature

Available

Brake Switch

Ignition switch ON

Brake pedal is released

OFF

Brake pedal is depressed

Clutch SW

Ignition switch ON

Clutch pedal is released

Engage

Clutch pedal is depressed

Disengage

Engine General Information and Diagnosis: 1A-23

Scan Tool Data Definitions
Engine Speed (RPM): It is computed by reference pulses from the crankshaft position sensor.
Vehicle Speed (km/h): It is computed based on pulse signals from rear wheel speed sensor (RH, LH).
Coolant Temp (engine coolant temperature,

°C): It is detected by engine coolant temperature sensor.

Intake Air Temp (intake air temperature,

°C): It is detected by intake air temperature sensor.

Barometric Pres (barometric pressure, hPa): It is detected by barometric pressure sensor included into ECM.
Turbo Pressure (hPa): This parameter indicates intake manifold pressure measured by boost pressure sensor.
Battery Voltage (V): This parameter indicates battery positive voltage inputted to ECM.
Pedal position (accelerator pedal position, %): When throttle position sensor is fully closed position, throttle

opening is indicated as 0% and 100% full open position.

EGR position sensor (EGR solenoid valve Pulse Width Modulation, %): This parameter indicates valve ON

(valve open) time rate within a certain set cycle of EGR solenoid valve which controls the amount of EGR flow. 0%
means that the EGR valve is completely closed while 100% is fully open valve.

MAF (mass air flow rate, mg/str (mg/stroke)): It represents mass of air entering by one stroke to a cylinder which is

measured by mass air flow sensor.

Fuel pressure (kPa): This parameter indicates fuel pressure in high pressure fuel circuit which is measured by fuel

pressure sensor.

Metering unit duty (fuel flow actuator Pulse Width Modulation, %): This parameter indicates fuel flow actuator

opening rate which controls the amount of fuel flow.

Differential pres (Diesel Particulate Filter differential pressure, hPa): This parameter indicates the differential

pressure on the diesel particulate filter upstream side and the downstream side. ECM judges the accumulative
amount of soot, ash and etc. in diesel particulate filter by measuring the blocked condition of diesel particulate
filter.

Diesel PF inlet Temp (Diesel Particulate Filter upstream temperature (Exhaust gas temperature sensor 2)

signal,

°C): It is detected by exhaust gas temperature sensor 2 located on upstream of diesel particulate filter.

Diesel PF outlet Temp (Diesel Particulate Filter outlet temperature (Exhaust gas temperature sensor 3) signal,

°C): It is detected by exhaust gas temperature sensor 3 located on downstream of diesel particulate filter.

Diesel PF soot mass (Weight of soot in Diesel Particulate Filter, g): This parameter indicates weight of soot, ash

and etc. in diesel particulate filter depending on differential pressure sensor signal.

Distance from regeneration (km): It represents how much distance (km) driven since last regeneration.
A/C Config (A/C configuration, (Unavailable, Available)): Every vehicle indicates Available with or without

equipment of A/C system.

Water sensor Config (Fuel filter water detection sensor configuration, (Unavailable, Available)): Every vehicle

indicates Available.

Brake Switch (Brake light switch, (ON,OFF)): This parameter indicates the state of the brake switch.
Clutch SW (Clutch pedal position switch, (Disengage, engage)): This parameter indicates the state of the clutch

pedal position switch.

Cyl # FF Correction (Cylinder # fuel flow correction, mm3/str (mm3/stroke)): This parameter indicates the

amount of the correction from the reference value of the fuel oil consumption in each injector.

Turbo upstream Temp (Turbocharger upstream temperature (Exhaust gas temperature sensor 1) signal,

°C):

It is detected by exhaust gas temperature sensor 1 located on exhaust manifold.

Cyl 1 FF Correction

At specified idle speed without engine load after
warming up to normal operating temperature

–1.0 mg/str – 1.0 mg/str

Cyl 2 FF Correction
Cyl 3 FF Correction
Cyl 4 FF Correction
Turbo upstream Temp.

At specified idle speed without engine load after
warming up to normal operating temperature

100

°C – 200 °C

Scan tool data

Vehicle condition

Normal condition / reference

values

1A-24 Engine General Information and Diagnosis:

Visual Inspection

S5JB0B1104009

Visually check the following parts and systems.

Engine Basic Inspection

S5JB0B1104010

This check is very important for troubleshooting when ECM has detected no DTC and no abnormality has been found
in “Visual Inspection”.
Follow the flow carefully.

Inspection item

Referring section

• Engine oil-level, leakage

“Engine Oil and Filter Change in Section 0B”

• Engine coolant-level, leakage

“Coolant Level Check in Section 1F”

• Fuel-level, leakage

“Fuel Lines and Connections Inspection in Section 0B”

• Air cleaner element-dirt, clogging

“Air Cleaner Filter Inspection in Section 0B”

• Battery-fluid level, corrosion of terminal

“Battery Description in Section 1J”

• Water pump belt-tension damage

“Accessory Drive Belt Inspection in Section 1J”

• Vacuum hoses of air intake system-disconnection,

looseness, deterioration, bend

“Air intake Pipe Removal and Installation in Section
1D” and “Vacuum Pump Removal and Installation in
Section 1D”

• Connectors of electric wire harness-disconnection, friction
• Fuses-burning
• Parts-installation, bolt-looseness
• Parts-deformation
• Other parts that can be checked visually
Also check the following items at engine start, if possible
• Malfunction indicator lamp-Operation

“Malfunction Indicator Lamp (MIL) Check”

• Charge warning lamp-Operation

“Generator Symptom Diagnosis in Section 1J”

• Engine oil pressure warning lamp-Operation

“Oil Pressure Switch Inspection in Section 9C”

• Engine coolant temp. meter-Operation
• Fuel level meter-Operation

“Fuel Level Sensor Inspection in Section 9C”

• Tachometer-Operation
• Abnormal air being inhaled from air intake system
• Exhaust system-leakage of exhaust gas, noise
• Other parts that can be checked visually

Step

Action

Yes

Check battery voltage

Is it 11 V or more?

Go to Step 2.

Charge or replace
battery.

Is engine cranked?

Go to Step 3

Go to “Cranking System
Symptom Diagnosis in
Section 1I”.

Does engine start?

Go to Step 4.