Suzuki Grand Vitara JB627. Manual — part 65

1A-209 Engine General Information and Diagnosis:

68

RED/

WHT

MAP sensor signal
(if equipped)

3.3 – 4.3 V

Ignition switch is at ON
position and barometric
pressure is at 100 kPa
(760 mmHg).

—

1.0 – 2.5 V

Refer to “Reference
waveform No.21: ”.

Output signal varies
linearly depending on the
throttle valve opening and
engine speed.

69

—

—

—

—

—

70

—

—

—

—

—

71

—

—

—

—

—

72

—

—

—

—

—

73

BLK/
ORN

Ground for ECM

Below 0.3 V

Ignition switch is at ON
position.

—

74

PPL/

RED

Ignition coil No.6
output

0 – 0.6 V

Ignition switch is at ON
position.

—

*0 – 0.6 V

↑↓

4 – 6 V

Refer to “Reference

waveform No.17: ”,

“Reference waveform

No.22: ” and

“Reference waveform

No.28: ”.

Engine running at
specified idle speed after
warmed up engine.

Output signal is active
high pulse. Pulse
frequency varies
depending on engine
speed.

75

BRN/

YEL

Ignition coil No.4
output

0 – 0.6 V

Ignition switch is at ON
position.

—

*0 – 0.6 V

↑↓

4 – 6 V

Refer to “Reference

waveform No.17: ”,

“Reference waveform

No.23: ” and

“Reference waveform

No.28: ”.

Engine running at
specified idle speed after
warmed up engine.

Output signal is active
high pulse. Pulse
frequency varies
depending on engine
speed.

76

BRN/

BLK

Ignition coil No.2
output

0 – 0.6 V

Ignition switch is at ON
position.

—

*0 – 0.6 V

↑↓

4 – 6 V

Refer to “Reference

waveform No.17: ”,

“Reference waveform

No.24: ” and

“Reference waveform

No.28: ”.

Engine running at
specified idle speed after
warmed up engine.

Output signal is active
high pulse. Pulse
frequency varies
depending on engine
speed.

77

PNK/

BLK

Heater output of A/
F sensor (Bank-1)

10 – 14 V

Ignition switch is at ON
position.

—

*0 – 1 V

↑↓

10 – 14 V

Refer to “Reference

waveform No.10: ”

and “Reference

waveform No.11: ”.

Engine running at
specified idle speed after
warmed up engine.

Output signal is active low
duty pulse. Duty ratio
varies depending on the
engine condition.

Terminal

No.

Wire

color

Circuit

Normal voltage

Condition

Remarks

Engine General Information and Diagnosis: 1A-210

ECM connector “E23”

78

PNK/

BLU

Heater output of A/
F sensor (Bank-2)

10 – 14 V

Ignition switch is at ON
position.

—

*0 – 1 V

↑↓

10 – 14 V

Refer to “Reference

waveform No.10: ”

and “Reference

waveform No.11: ”.

Engine running at
specified idle speed after
warmed up engine.

Output signal is active low
duty pulse. Duty ratio
varies depending on the
engine condition.

79

BLK/

YEL

Ground for A/F
sensor heater

Below 0.3 V

Ignition switch is at ON
position.

—

80

BLK/
ORN

Ground for ECM

Below 0.3 V

Ignition switch is at ON
position.

—

81

BLK/
ORN

Ground for ECM

Below 0.3 V

Ignition switch is at ON
position.

—

Terminal

No.

Wire

color

Circuit

Normal voltage

Condition

Remarks

Terminal

No.

Wire

color

Circuit

Normal voltage

Condition

Remarks

1

WHT

Power source for
ECM internal
memory

10 – 14 V

Ignition switch is at ON
position.

—

2

BLU/

BLK

Main power supply

10 – 14 V

Ignition switch is at ON
position.

—

3

BLU/

BLK

Main power supply

10 – 14 V

Ignition switch is at ON
position.

—

4

BLU/

RED

Output of throttle
actuator (+)

0 – 1 V

Ignition switch is at ON
and accelerator pedal is at
fully depressed position
after warmed up engine.

Output signal are duty
pulse. Duty ratio varies
depending on throttle
valve opening and
accelerator pedal position.

*0 – 1 V

↑↓

10 – 14 V

Refer to “Reference

waveform No.25: ”

and “Reference

waveform No.26: ”.

Ignition switch is at ON
position and accelerator
pedal is at idle position
after warmed up engine.

5

BLU/

YEL

Output of throttle
actuator (–)

0 – 1 V

Ignition switch is at ON
position and accelerator
pedal is at idle position
after warmed up engine.

Output signal are duty
pulse. Duty ratio varies
depending on throttle
valve opening and
accelerator pedal position.

*0 – 1 V

↑↓

10 – 14 V

Refer to “Reference

waveform No.25: ”

and “Reference

waveform No.26: ”.

Ignition switch is at ON
and accelerator pedal is at
fully depressed position
after warmed up engine.

6

BLU/
ORN

Throttle actuator
control relay output

0 – 1 V

Ignition switch is at ON
position.

—

7

GRN

Power supply of
throttle actuator
drive circuit

10 – 14 V

Ignition switch is at ON
position.

—

8

BLK/

WHT

Ignition switch
signal

0 – 1 V

Ignition switch is at OFF
position.

—

10 – 14 V

Ignition switch is at ON
position.

1A-211 Engine General Information and Diagnosis:

9

WHT/

RED

CAN
communication line
(active high signal)

*2.5 – 4.5 V

Refer to “Reference

waveform No.27: ”.

Ignition switch is at ON
position.

CAN communication
signal is serial
communication signal
pulse. Pulse signal
displayed with a regular
frequency varies
depending on engine
condition.

10

—

—

—

—

—

11

PNK/

BLU

Clock signal for
immobilizer coil
antenna
(If equipped)

10 – 14 V

Ignition switch is at ON
position.

For details, refer to
“Inspection of Immobilizer
Control Module (ICM) and
Its Circuit in Section 10C”.

12

—

—

—

—

—

13

—

—

—

—

—

14

RED/

YEL

Radiator cooling
fan relay No.3
output

10 – 14 V

• Ignition switch is at ON

position and engine
coolant temperature is
below 100

°C (212 °F).

• A/C switch is at ON

position while engine is
running and A/C
refrigerant pressure is
below 1300 kPa (188.5
psi).

—

0 – 2 V

• Ignition switch is at ON

position and engine
coolant temperature is
102.5

°C (203 °F) or

higher.

• A/C switch is at ON

position while engine is
running and A/C
refrigerant pressure is
1600 kPa (232 psi) or
higher.

—

15

RED/

BLK

Radiator cooling
fan relay No.1
output

10 – 14 V

• Ignition switch is at ON

position and engine
coolant temperature is
below 95

°C (203 °F).

• A/C switch is at ON

position while engine is
running and A/C
refrigerant pressure is
below 300 kPa (43.5
psi).

—

0 – 2 V

• Ignition switch is at ON

position and engine
coolant temperature is
97.5

°C (207.5 °F) or

higher.

• A/C switch is at ON

position while engine is
running and A/C
refrigerant pressure is
340 kPa (49.3 psi) or
higher.

—

Terminal

No.

Wire

color

Circuit

Normal voltage

Condition

Remarks

Engine General Information and Diagnosis: 1A-212

16

BLU

Main power supply
relay output

0 – 1 V

Ignition switch is at OFF
position.

—

10 – 14 V

Ignition switch is at ON
position.

17

WHT/

BLU

CAN
communication line
(active low signal)

*0.5 – 2.5 V

Refer to “Reference

waveform No.17: ”.

Ignition switch is at ON
position.

CAN communication
signal is serial
communication signal
pulse. Pulse signal
displayed with a regular
frequency varies
depending on engine
condition.

18

—

—

—

—

—

19

GRY/

BLU

Serial
communication line
for immobilizer coil
antenna
(if equipped)

10 – 14 V

Ignition switch is at ON
position.

For details, refer to
“Inspection of Immobilizer
Control Module (ICM) and
Its Circuit in Section 10C”.

20

—

—

—

—

—

21

—

—

—

—

—

22

—

—

—

—

—

23

RED

Radiator cooling
fan relay No.2
output

10 – 14 V

• Ignition switch is at ON

position and engine
coolant temperature is
below 100

°C (212 °F).

• A/C switch is at ON

position while engine is
running and A/C
refrigerant pressure is
below 1300 kPa (188.5
psi).

—

0 – 2 V

• Ignition switch is at ON

position and engine
coolant temperature is
102.5

°C (203 °F) or

higher.

• A/C switch is at ON

position while engine is
running and A/C
refrigerant pressure is
1600 kPa (232 psi) or
higher.

—

24

WHT/

GRN

Fuel pump relay
output

0 – 2.5 V

For 2 seconds from the
time ignition switch is at
ON position or while
engine is running.

—

10 – 14 V

2 seconds after ignition
switch is at ON position or
while engine is at stop.

25

WHT

Output for 5 V
power source of
APP sensor (main)

4.5 – 5.5 V

Ignition switch is at ON
position.

—

Terminal

No.

Wire

color

Circuit

Normal voltage

Condition

Remarks