Nissan Qashqai J11. Manual — part 277

ECM

ECM-85

< ECU DIAGNOSIS INFORMATION >

[MR20DD]

C

D

E

F

G

H

I

J

K

L

M

A

ECM

N

P

O

85

(Y)

128

(B)

Intake manifold runner con-
trol valve (OPEN)

Output

[Engine is running]
• Engine: after warming up
• Idle speed

0 V

[Engine is running]
• Engine: after warming up
• No load
• Revving engine from idle to 3,000

rpm

Generates a voltage for a mo-

ment

(11 – 14 V)

87

(GR)

128

(B)

Fuel pump relay

Output

[Ignition switch: ON]
• More than 1 second after turning

ignition switch ON

[Engine is running]

0 - 1.0 V

[Ignition switch: ON]
• 1 second after turning ignition

switch ON

BATTERY VOLTAGE

(11 – 14 V)

89

(V)

59

(B)

Heated oxygen sensor 2
heater

Output

[Engine is running]
• Engine speed: Below 3,600 rpm

after the following conditions are
met

- Engine: after warming up
- Keeping the engine speed be-

tween 3,500 and 4,000 rpm for 1
minute and at idle for 1 minute un-
der no load

10 V

[Ignition switch: ON]
• Engine: Stopped
[Engine is running]
• Engine speed: More than 3,600

rpm

BATTERY VOLTAGE

(11 - 14 V)

91

(BG)

128

(B)

ECM relay (Self shut - off)

Output

[Engine is running]
[Ignition switch: OFF]
• A few seconds after turning igni-

tion switch OFF

0 - 1.0 V

[Ignition switch: OFF]
• More than a few seconds after

turning ignition switch OFF

BATTERY VOLTAGE

(11 - 14 V)

93

(P)

128

(B)

Air fuel ratio (A/F) sensor 1
heater

Input

[Engine is running]
• Engine: after warming up
• Idle speed

(More than 140 seconds after
starting engine)

2.9 - 8.8 V

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

−

Signal name

Input/

Output

JMBIA0325GB

JPBIA4732ZZ

ECM-86

< ECU DIAGNOSIS INFORMATION >

[MR20DD]

ECM

94

(G)

128

(B)

Intake valve timing control
solenoid valve

Output

[Engine is running]
• Engine: after warming up
• Idle speed

0 V

[Engine is running]
• Engine: after warming up
• Revving engine from idle to 2,000

rpm quickly

BATTERY VOLTAGE

(11 – 14 V)

95

(GR)

128

(B)

Exhaust valve timing control
solenoid valve

Output

[Engine is running]
• Engine: after warming up
• Idle speed

0 V

[Engine is running]
• Engine: after warming up
• Engine speed: 2,000 rpm

BATTERY VOLTAGE

(11 –14 V)

97

(W)

124

(R)

Barometric pressure sensor

Input

[Ignition switch: ON]

1.8 – 4.8 V

Output voltage varies with atmo-

spheric pressure.

99

(P)

—

CAN - L

Input/

Output

—

—

100

(L)

—

CAN - H

Input/

Output

—

—

101

(Y)

124

(R)

Sensor power supply (Baro-
metric pressure sensor)

—

[Ignition switch: ON]

5 V

108

(R)

128

(B)

Clutch pedal position switch

Input

[Ignition switch: ON]
• Clutch pedal: Fully released

0 V

[Ignition switch: ON]
• Clutch pedal: Fully depressed

BATTERY VOLTAGE

(11 –14 V)

109

(LG)

128

(B)

Ignition switch

Input

[Ignition switch: OFF]

0 V

[Ignition switch: ON]

BATTERY VOLTAGE

(11 –14 V)

110

(G)

111

(BR)

ASCD steering switch

Input

[Ignition switch: ON]
• ASCD steering switch: OFF

4.0 V

[Ignition switch: ON]
• Main switch: Pressed

0 V

[Ignition switch: ON]
• CANCEL switch: Pressed

1.0 V

[Ignition switch: ON]
• RESUME/ACCELERATE switch:

Pressed

3.0 V

[Ignition switch: ON]
• SET/COAST switch: Pressed

2.0 V

111

(BR)

—

Sensor ground (ASCD steer-
ing switch)

—

—

—

115

(V)

128

(B)

Stop lamp switch

Input

[Ignition switch: OFF]
• Brake pedal: Fully released

0 V

[Ignition switch: OFF]
• Brake pedal: Depressed

BATTERY VOLTAGE

(11 - 14 V)

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

−

Signal name

Input/

Output

JMBIA0038GB

ECM

ECM-87

< ECU DIAGNOSIS INFORMATION >

[MR20DD]

C

D

E

F

G

H

I

J

K

L

M

A

ECM

N

P

O

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

*: Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to

PG-138, "FOR

MAINTENANCE REQUIRED BATTERY MODELS : Work Procedure"

.

Fail-safe

INFOID:0000000010702850

NON DTC RELATED ITEM

116

(GR)

128

(B)

Brake pedal position switch

Input

[Ignition switch: OFF]
• Brake pedal: Fully released

BATTERY VOLTAGE

(11 - 14 V)

[Ignition switch: OFF]
• Brake pedal: Depressed

0 V

118

(BG)

120

(Y)

Sensor power supply (Accel-
erator pedal position sensor
2)

—

[Ignition switch: ON]

5 V

119
(W)

120

(Y)

Accelerator pedal position
sensor 2

Input

[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully released

0.3 - 0.6 V

[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully de-

pressed

1.95 - 2.4 V

120

(Y)

—

Sensor ground (Accelerator
pedal position sensor 2)

—

—

—

121

(BR)

128

(B)

ECM power supply

Input

[Ignition switch: ON]

BATTERY VOLTAGE

(11 - 14 V)

122

(V)

127

(GR)

Sensor power supply (Accel-
erator pedal position sensor
1)

—

[Ignition switch: ON]

5 V

123

(B)

—

ECM ground

—

—

—

124

(R)

—

Sensor ground (Barometric
pressure sensor)

—

—

—

125

(B)

—

ECM ground

—

—

—

126

(R)

127

(GR)

Accelerator pedal position
sensor 1

Input

[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully released

0.6 - 0.9 V

[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully de-

pressed

3.9 - 4.7 V

127

(GR)

—

Sensor ground (Accelerator
pedal position sensor 1)

—

—

—

128

(B)

—

ECM ground

—

—

—

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

−

Signal name

Input/

Output

ECM-88

< ECU DIAGNOSIS INFORMATION >

[MR20DD]

ECM

DTC RELATED ITEM

Description

When a DTC is detected, ECM executes a mode (in the Fail-safe mode) applicable to the DTC. The fail-safe
mode has the preset traveling control mode (accelerator angle variation and engine output limit), device fix
mode and combustion control mode.

Fail Safe Pattern

Detected

items

Engine operating condition in

fail-safe mode

Remarks

Malfunction
indicator lamp
circuit

Engine speed will not rise more
than 2,500 rpm due to the fuel
cut

When there is an open circuit on MIL circuit, the ECM cannot warn the driver by
lighting up MIL when there is malfunction on engine control system.
Therefore, when electrical controlled throttle and part of ECM related diagnoses are
continuously detected as NG for 5 trips, ECM warns the driver that engine control
system malfunctions and MIL circuit is open by means of operating fail safe func-
tion.
The fail safe function also operates when above diagnoses except MIL circuit are
detected and demands the driver to repair the malfunction.

Fail safe mode

Vehicle behavior

Traveling con-
trol mode

Accelerator an-
gle variation
control

ECM controls the accelerator pedal depression speed to make it slower than actual speed. This
causes a drop in accelerating performance and encourages the driver to repair malfunction.
NOTE:
ECM does not control the accelerator pedal releasing speed.

Engine output
control

ECM reduces the engine output, according to the rise in engine speed. This reduces the vehicle
speed to encourage the driver to repair malfunction.

Device fix mode

• This mode fixes the IVT control solenoid valve and the EVT control solenoid valve in the refer-

ence position.

• The intake manifold runner control valve motor is turned OFF (intake manifold runner control

valve opens).

Combustion
control mode

Stratified charge
combustion
control at start-
ing

No stratified charge combustion at starting (cold start).

Idle speed con-
trol

Stops feedback control of idle speed and controls with specified speed.

Recovery speed
control at decel-
erating

Stops recovery speed control by the fuel cut at decelerating and controls with specified speed.

Idle neutral con-
trol

Stops idle neutral control.

Ignition timing
correction con-
trol

Partially controls ignition timing control.

Retardation
control

Controls ignition timing delay control in the intermediate water temperature range.

Pattern

Fail safe mode

A

Traveling control mode

Accelerator angle variation control

B

Engine output control

C

Device fix mode