Suzuki Grand Vitara JB416 / JB420. Manual - part 22

1A-37 Engine General Information and Diagnosis: 

)

 P0123

Throttle position sensor (main) circuit high

• ECM turns off throttle actuator control relay and 

throttle valve is fixed at the opening of about 7° 
from its completely closed position (default 
opening).

• ECM controls fuel cut at specified engine speed.
• ECM stops air/fuel ratio control.

)

 P0131

O2 sensor (HO2S) circuit low voltage (Sensor-1)

ECM stops air/fuel ratio control.

)

 P0132

O2 sensor (HO2S) circuit high voltage (Sensor-1)

)

 P0134

O2 sensor (HO2S) circuit no activity detected 
(Sensor-1)

)

 P0222

Throttle position sensor (sub) circuit low

• ECM turns off throttle actuator control relay and 

throttle valve is fixed at the opening of about 7° 
from its completely closed position (default 
opening).

• ECM controls fuel cut at specified engine speed.

)

 P0223

Throttle position sensor (sub) circuit high

)

 P0335

Crankshaft position sensor circuit

Ignition timing is fixed.

)

 P0500

Vehicle speed sensor

ECM controls actuators assuming that vehicle 
speed is 0 km/h (0 mile/h).

)

 P2101

Throttle actuator control motor circuit range / 
performance

• ECM turns off throttle actuator control relay and 

throttle valve is fixed at the opening of about 7

° 

from its completely closed position (default 
opening).

• ECM controls fuel cut at specified engine speed.

)

 P2102

Throttle actuator control motor circuit low

)

 P2103

Throttle actuator control motor circuit high

ECM controls fuel cut at specified engine speed.

)

 P2111

Throttle actuator control system – stuck open

• Throttle valve is fixed at the opening of about 7

° 

from its completely closed position (default 
opening).

• ECM controls fuel cut at specified engine speed.

)

 P2119

Throttle actuator control throttle body range / 
performance

• ECM turns off throttle actuator control relay and 

throttle valve is fixed at the opening of about 7

° 

from its completely closed position (default 
opening).

• ECM controls fuel cut at specified engine speed.

)

 P2122

Pedal position sensor (main) circuit low input

• Throttle valve is fixed at the opening of about 7

° 

from its completely closed position (default 
opening).

• ECM controls fuel cut at specified engine speed.

)

 P2123

Pedal position sensor (main) circuit high input

)

 P2127

Pedal position sensor (sub) circuit low input

)

 P2128

Pedal position sensor (sub) circuit high input

)

 P2135

Throttle position sensor (main) / (sub) voltage 
correlation

• ECM turns off throttle actuator control relay and 

throttle valve is fixed at the opening of about 7

° 

from its completely closed position (default 
opening).

• ECM controls fuel cut at specified engine speed.

)

 P2138

Pedal position sensor (main) / (sub) voltage 
correlation

• Throttle valve is fixed at the opening of about 7

° 

from its completely closed position (default 
opening).

• ECM controls fuel cut at specified engine speed.

)

 P2227

Barometric pressure sensor performance problem

ECM controls actuators assuming that barometric 
pressure is 101.33 kPa (762 mmHg).

DTC No.

Detected item

Fail-safe operation

Engine General Information and Diagnosis:  1A-38

Scan Tool Data

S5JB0A1104007

As the data values are standard values estimated on the basis of values obtained from the normally operating vehicles 
by using a 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 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 scan tool. 
Be sure to use the timing light to check the ignition timing.

NOTE

• With the generic scan tool, only star (*) marked data in the following table can be read.
• When checking the data with the engine running at idle or racing, be sure to shift M/T gear to the 

neutral gear position and A/T gear to the “Park” position and pull the parking brake fully. Also, if 
nothing or “no load” is indicated, turn OFF A/C (if equipped with A/C), all electric loads, P/S and all 
the other necessary switches.

 

Scan tool data

Vehicle condition

Normal condition / 

reference values

*

)

COOLANT TEMP 

(ENGINE COOLANT TEMP.)

At specified idle speed after warming up

80 – 100 

°C, 176 – 212 °F

* )INTAKE AIR TEMP. 

At specified idle speed after warming up

–5 

°C (23 °F) + environmental 

temp. to 40 

°C (104 °F) + 

environmental temp.

* )ENGINE SPEED 

It idling with no load after warming up

Desired idle speed 

± 50 rpm

)

DESIRED IDLE (DESIRED 

IDLE SPEED)

It idling with radiator cooling fan stopped and all 
electrical parts turned OFF after warming up, M/T at 
neutral

650 rpm (for J20 engine), 660 

rpm (for M16 engine)

*

)

MAF (MASS AIR FLOW 

RATE)

At specified idle speed with no load after warming 
up

1.0 – 4.0 g/s 0.14 – 0.52 lb/

min.

At 2500 r/min. with no load after warming up

4.0 – 12.0 g/s 0.53 – 1.58 lb/

min.

*

)

CALC LOAD 

(CALCULATED LOAD 
VALUE)

At specified idle speed with no load after warming 
up

0 – 10%

At 2500 r/min. with no load after warming up

0 – 10%

*

)

MAP (INTAKE MANIFOLD 

ABSOLUTE PRESSURE)

At specified idle speed with no load after warming 
up

24 – 38 kPa, 7.1 – 11.2 in.Hg

*

)

THROTTLE POSITION 

(ABSOLUTE THROTTLE 
POSITION)

Ignition switch ON / 
warmed up engine 
stopped

Accelerator pedal released

0 – 5%

Accelerator pedal depressed 
fully

90 – 100%

)

 BAROMETRIC PRES

—

Barometric pressure is 

displayed

)

 FUEL TANK LEVEL

Ignition switch ON

0 – 100%

)

 BATTERY VOLTAGE 

Ignition switch ON / engine at stop

10 – 14 V

)

 BATTERY CURRENT (for 

J20 engine)

At 2000 r/min. with no load after warming up

10.0 – 16.0 A

At 2000 r/min. with headlight ON and blower motor 
switch at HI position after warming up

35.0 – 45.0 A

)

 BRAKE SWITCH

Ignition switch ON

Brake pedal is released

OFF

Brake pedal is depressed

ON

)

 INTAKE TUNING SOL 

(INTAKE MANIFOLD 
TUNING VALVE) (for J20 
engine) 

At specified idle speed after warming up

ON

Engine speed at 4700 rpm or more

OFF

*

)

 FUEL SYSTEM B1 (FUEL 

SYSTEM STATUS)

At specified idle speed after warming up

CLSD (closed loop)

*

)

 O2S B1 S2 (HEATED 

OXYGEN SENSOR-2)

At 2000 r/min. for 3 min. or longer after warming up

0.1 – 0.95 V

*

)

 SHORT FT B1 (SHORT 

TERM FUEL TRIM)

At specified idle speed after warming up

–20 – +20%

1A-39 Engine General Information and Diagnosis: 

*

)

 LONG FT B1 (LONG 

TERM FUEL TRIM)

At specified idle speed after warming up

–20 – +20%

)

 TOTAL FUEL TRIM B1

At specified idle speed after warming up

–35 – +35%

*

)

 A/F B1 S1 CURRENT (A/F 

SENSOR OUTPUT 
CURRENT)

At specified idle speed after warming up

–0.20 – 0.10 mA

)

 FUEL CUT 

Engine at fuel cut condition

ON

Engine at other than fuel cut condition

OFF

)

 O2S B1 S2 ACT (HEATED 

OXYGEN SENSOR-2)

At specified idle speed after warming up

ACTIVE

)

 A/F B1 S1 ACT (A/F 

SENSOR)

At specified idle speed after warming up

ACTIVE

)

 CANIST PRG DUTY 

(EVAP CANISTER PURGE 
FLOW DUTY)

At specified idle speed after warming up

0%

*

)

 IGNITION ADVANCE 

(IGNITION TIMING 
ADVANCE FOR NO.1 
CYLINDER)

At specified idle speed with no load after warming 
up

5 – 15

° BTDC (for J20 engine), 

7 – 17

° BTDC (for M16 

engine)

)

 EGR VALVE OPENING

At specified idle speed after warming up

0%

)

 VVT GAP (TARGET-

ACTUAL POSITION) (for 
M16 engine)

At specified idle speed after warming up

0 – 3

°

)

 GENERATOR CONT 

DUTY (GENERATOR 
CONTROL DUTY)

At specified idle speed with no load after warming 
up

100%

)

 GENERATOR FIELD 

DUTY (GENERATOR FIELD 
COIL DUTY)

At specified idle speed with no load after warming 
up

10.0 – 50.0%

)

 FUEL PUMP

Within 2 seconds after ignition switch ON or engine 
running

ON

Engine at stop with ignition switch ON

OFF

)

 STARTER SW (STARTER 

SWITCH)

Ignition switch is turned to ST (engine cranking) 
position

ON

)

 A/C PRESSURE (A/C 

REFRIGERANT ABSOLUTE 
PRESSURE)

Engine running

A/C ON (A/C is operating) at 
ambient temperature: 30 

°C 

(86 

°F) and humidity: 50%

1300 – 1480 kPa (for J20 

engine), 1150 – 1280 kPa (for 

M16 engine) For more details, 

refer to pressure of high 

pressure gage under “A/C 

System Performance 

Inspection in Section 7B”.

A/C OFF (A/C is not 
operating) at ambient 
temperature: 30 

°C (86 °F) 

and engine coolant 
temperature: 90 – 100 

°C 

(194 – 212 

°F)

600 – 1000 kPa After longer 

than 10 min from A/C switch 

turned off

)

 A/C SWITCH

Engine running after warming up, A/C not operating

OFF

Engine running after warming up, A/C operating

ON

)

 A/C COMP RELAY

Engine running

A/C switch and blower motor 
switch turned ON

ON

A/C switch and blower motor 
switch turned OFF

OFF

)

 BLOWER FAN

Ignition switch ON

Blower fan switch: 5th speed 
position or more

ON

Blower fan switch: under 4th 
speed position

OFF

Scan tool data

Vehicle condition

Normal condition / 

reference values

Engine General Information and Diagnosis:  1A-40

)

 ELECTRIC LOAD 

Ignition switch ON / Headlight, small light, all turned 
OFF

OFF

Ignition switch ON / Headlight, small light, turned 
ON

ON

)

 PSP SWITCH (POWER 

STEERING PUMP 
PRESSURE SWITCH)

At specified idle speed and steering wheel at 
straight ahead position

OFF

At specified idle speed and steering wheel turned to 
the right or left as far as it stops

ON

)

 RADIATOR FAN LOW 

(RADIATOR COOLING FAN 
CONTROL RELAY No.1)

Ignition switch ON

Engine coolant temp.: Lower 
than 95 

°C (203 °F)

OFF

Engine coolant temp.: 97.5 

°C (208 °F) or higher

ON

)

 RADIATOR FAN NO.1 

HIGH (RADIATOR COOLING 
FAN CONTROL RELAY 
NO.2)

Ignition switch ON

Engine coolant temp.: lower 
than 100 

°C (212 °F)

OFF

Engine coolant temp.: 102.5 

°C (212 °F) or higher

ON

)

 RADIATOR FAN NO.2 

HIGH (RADIATOR COOLING 
FAN CONTROL RELAY 
NO.3)

Ignition switch ON

Engine coolant temp.: lower 
than 100 

°C (212 °F)

OFF

Engine coolant temp.: 102.5 

°C (212 °F) or higher

ON

)

 TP SENSOR 1 VOLT 

(THROTTLE POSITION 
SENSOR (MAIN) OUTPUT 
VOLTAGE)

Ignition switch ON 
after warmed up 
engine

Accelerator pedal released

0.7 – 1.2 V

Accelerator pedal depressed 
fully

3.6 – 4.3 V

)

 TP SENSOR 2 VOLT 

(THROTTLE POSITION 
SENSOR (SUB) OUTPUT 
VOLTAGE)

Ignition switch ON 
after warmed up 
engine

Accelerator pedal released

1.6 – 2.0 V

Accelerator pedal depressed 
fully

3.8 – 4.5 V

)

 APP SENSOR 1 VOLT 

(ACCELERATOR PEDAL 
POSITION (APP) SENSOR 
(MAIN) OUTPUT VOLTAGE)

Ignition switch ON 
after warmed up 
engine

Accelerator pedal released

0.7 – 0.8 V

Accelerator pedal depressed 
fully

3.5 – 4.3 V

)

 APP SENSOR 2 VOLT 

(ACCELERATOR PEDAL 
POSITION (APP) SENSOR 
(SUB) OUTPUT VOLTAGE)

Ignition switch ON 
after warmed up 
engine

Accelerator pedal released

0.3 – 0.4 V

Accelerator pedal depressed 
fully

1.7 – 2.2 V

)

 ACCEL POSITION 

(ABSOLUTE 
ACCELERATOR PEDAL 
POSITION)

Ignition switch ON 
after warmed up 
engine

Accelerator pedal released

0 – 5%

Accelerator pedal depressed 
fully

90 – 100%

)

 TARGET THROTTLE 

POSI (TARGET THROTTLE 
VALVE POSITION)

Ignition switch ON 
after warmed up 
engine

Accelerator pedal released

0 – 5%

Accelerator pedal depressed 
fully

90 – 100%

)

 IAC THROTTLE 

OPENING (IDLE AIR 
CONTROL THROTTLE 
VALVE OPENING)

It idling with no load after warming up

5 – 55%

)

 THROTTLE MOTOR 

VOLT

Ignition switch ON / engine at stop

10.0 – 14.0 V

)

 CLOSED THROTTLE 

POS (CLOSED THROTTLE 
POSITION)

Throttle valve at idle position

ON

Throttle valve opens larger than idle position

OFF

)

 THROTTLE MOTOR 

RELAY

At specified idle speed after warming up

ON

* ) VEHICLE SPEED

At stop

0 km/h (0 mph)

)

 INJ PULSE WIDTH (FUEL 

INJECTION PULSE WIDTH)

At specified idle speed with no load after warming 
up

2.0 – 4.0 msec.

At 2500 r/min. with no load after warming up

2.0 – 3.6 msec.

Scan tool data

Vehicle condition

Normal condition / 

reference values