Nissan Qashqai (2007-2010). Manual — part 354
ECM
EC-935
< ECU DIAGNOSIS >
[MR20DE (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
ECU DIAGNOSIS
ECM
Reference Value
INFOID:0000000000936971
VALUES ON THE DIAGNOSIS TOOL
Remarks:
l
Specification data are reference values.
l
Specification data are output/input values which are detected or supplied by the ECM at the connector.
* Specification data may not be directly related to their components signals/values/operations.
I.e. Adjust ignition timing with a timing light before monitoring IGN TIMING, because the monitor may show the specification data in spite of the
ignition timing not being adjusted to the specification data. this IGN TIMING monitors the data calculated by the ECM according to the signals
input from the camshaft position sensor and other ignition timing related sensors.
Monitor Item
Condition
Values/Status
ENG SPEED
• Run engine and compare CONSULT-III value with the tachometer indication.
Almost the same speed as
the tachometer indication.
MAS A/F SE-B1
See
B/FUEL SCHDL
See
A/F ALPHA-B1
See
COOLAN TEMP/S
• Engine: After warming up
More than 70
°
C (158
°
F)
HO2S1 (B1)
• Engine: After warming up
Maintaining engine speed at 2,000 rpm
0 - 0.3V
←→
Approx. 0.6 -
1.0V
HO2S2 (B1)
• Revving engine from idle up to 3,000 rpm quickly after the following conditions
are met.
- Engine: After warming up
- After keeping engine speed between 3,500 and 4,000 rpm for 1 minute and at
idle for 1 minute under no load
0 - 0.3V
←→
Approx. 0.6 -
1.0V
HO2S2 MNTR (B1)
• Engine: After warming up
Maintaining engine speed at 2,000 rpm
LEAN
←→→
RICH
Change more than 5 times
during 10 seconds.
HO2S2 MNTR (B1)
• Revving engine from idle up to 3,000 rpm quickly after the following conditions
are met.
- Engine: After warming up
- After keeping engine speed between 3,500 and 4,000 rpm for 1 minute and at
idle for 1 minute under no load
LEAN
←→
RICH
VHCL SPEED SE
• Turn drive wheels and compare CONSULT-III value with the speedometer in-
dication.
Almost the same speed as
speedometer indication
BATTERY VOLT
• Ignition switch: ON (Engine stopped)
11 - 14V
ACCEL SEN 1
• Ignition switch: ON
(Engine stopped)
Accelerator pedal: Fully released
0.5 - 1.0V
Accelerator pedal: Fully depressed
4.2 - 4.8V
ACCEL SEN 2*
• Ignition switch: ON
(Engine stopped)
Accelerator pedal: Fully released
0.5 - 1.0V
Accelerator pedal: Fully depressed
4.2 - 4.8V
THRL SEN 1-B1
• Ignition switch: ON
(Engine stopped)
• Shift lever: D (CVT), 1st (M/T)
Accelerator pedal: Fully released
More than 0.36V
Accelerator pedal: Fully depressed
Less than 4.75V
THRL SEN 2-B1*
• Ignition switch: ON
(Engine stopped)
• Shift lever: D (CVT), 1st (M/T)
Accelerator pedal: Fully released
More than 0.36V
Accelerator pedal: Fully depressed
Less than 4.75V
INT/A TEMP SE
• Ignition switch: ON
Indicates intake air tempera-
ture
START SIGNAL
• Ignition switch: ON
→
START
→
ON
OFF
→
ON
→
OFF
CLSD THL POS
• Ignition switch: ON
(Engine stopped)
Accelerator pedal: Fully released
ON
Accelerator pedal: Slightly depressed
OFF
EC-936
< ECU DIAGNOSIS >
[MR20DE (WITH EURO-OBD)]
ECM
AIR COND SIG
• Engine: After warming up, idle the
engine
Air conditioner switch: OFF
OFF
Air conditioner switch: ON
(Compressor operates.)
ON
P/N POSI SW
• Ignition switch: ON
Shift lever: P or N (CVT), Neutral (M/T)
ON
Selector lever: Except above
OFF
PW/ST SIGNAL
• Engine: After warming up, idle the
engine
Steering wheel: Not being turned
OFF
Steering wheel: Being turned
ON
LOAD SIGNAL
• Ignition switch: ON
Rear window defogger switch: ON
and/or Lighting switch: 2nd position
ON
Rear window defogger switch and lighting
switch: OFF
OFF
IGNITION SW
• Ignition switch: ON
→
OFF
→
ON
ON
→
OFF
→
ON
HEATER FAN SW
• Engine: After warming up, idle the
engine
Heater fan switch: ON
ON
Heater fan switch: OFF
OFF
BRAKE SW
• Ignition switch: ON
Brake pedal: Fully released
OFF
Brake pedal: Slightly depressed
ON
INJ PULSE-B1
• Engine: After warming up
• Shift lever: P or N (CVT), Neutral
(M/T)
• Air conditioner switch: OFF
• No load
Idle
2.0 - 3.0 msec
2,000 rpm
1.9 - 2.9 msec
IGN TIMING
• Engine: After warming up
• Shift lever: P or N (CVT), Neutral
(M/T)
• Air conditioner switch: OFF
• No load
Idle
10
°
- 20
°
BTDC
2,000 rpm
25
°
- 45
°
BTDC
PURG VOL C/V
• Engine: After warming up
• Shift lever: P or N (CVT), Neutral
(M/T)
• Air conditioner switch: OFF
• No load
Idle
(Accelerator pedal: Not depressed even
slightly, after engine starting.)
0%
2,000 rpm
20% - 90%
INT/V TIM (B1)
• Engine: After warming up
• Shift lever: P or N (CVT), Neutral
(M/T)
• Air conditioner switch: OFF
• No load
Idle
−
5
°
- 5
°
CA
2,000 rpm
Approx. 0
°
- 20
°
CA
INT/V SOL (B1)
• Engine: After warming up
• Shift lever: P or N (CVT), Neutral
(M/T)
• Air conditioner switch: OFF
• No load
Idle
0%
2,000 rpm
Approx. 0% - 60%
AIR COND RLY
• Engine: After warming up, idle the
engine
Air conditioner switch: OFF
OFF
Air conditioner switch: ON
(Compressor operates)
ON
FUEL PUMP RLY
• For 1 seconds after turning ignition switch: ON
• Engine running or cranking
ON
• Except above
OFF
THRTL RELAY
• Ignition switch: ON
ON
Monitor Item
Condition
Values/Status
ECM
EC-937
< ECU DIAGNOSIS >
[MR20DE (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
COOLING FAN
• Engine: After warming up, idle the
engine
• Air conditioner switch: OFF
Engine coolant temperature is 94
°
C
(201
°
F) or less.
OFF
Engine coolant temperature is between
95
°
C (203
°
F) and 99
°
C (210
°
F)
LOW*
2
Engine coolant temperature is 100
°
C
(212
°
F) or more
HIGH*
2
HO2S1 HTR (B1)
• Engine: After warming up
• Engine speed: Above 3,600 rpm
ON
Engine speed: Above 3,600 rpm
OFF
HO2S2 HTR (B1)
• Engine speed: Below 3,600 rpm after the following conditions are met.
- Engine: After warming up
- Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at
idle for 1 minute under no load
ON
• Engine speed: Above 3,600 rpm
OFF
VEHICLE SPEED
• Turn drive wheels and compare CONSULT-III value with the speedometer in-
dication.
Almost the same speed as
the speedometer indication
IDL A/V LEARN
• Engine: running
Idle air volume learning has not been per-
formed yet.
YET
Idle air volume learning has already been
performed successfully.
CMPLT
O2SEN HTR DTY
• Engine coolant temperature when engine started: More than 80
°
C (176
°
F)
• Engine speed: below 3,600 rpm
Approx. 30%
AC PRESS SEN
• Engine: Idle
• Both A/C switch and blower fan switch: ON (Compressor operates)
1.0 - 4.0V
VHCL SPEED SE
• Turn drive wheels and compare CONSULT-III value with the speedometer in-
dication.
Almost the same speed as
the speedometer indication
SET VHCL SPD
• Engine: Running
ASCD: Operating
The preset vehicle speed is
displayed
MAIN SW
• Ignition switch: ON
MAIN switch: Pressed
ON
MAIN switch: Released
OFF
CANCEL SW
• Ignition switch: ON
CANCEL switch: Pressed
ON
CANCEL switch: Released
OFF
RESUME/ACC SW
• Ignition switch: ON
RESUME/ACCELERATE switch:
Pressed
ON
RESUME/ACCELERATE switch: Re-
leased
OFF
SET SW
• Ignition switch: ON
SET/COAST switch: Pressed
ON
SET/COAST switch: Released
OFF
BRAKE SW1
(ASCD brake switch)
• Ignition switch: ON
• Brake pedal: Fully released (CVT)
• Brake pedal and clutch pedal: Fully re-
leased (M/T)
ON
• Brake pedal: Slightly depressed (CVT)
• Brake pedal and/or clutch pedal: Slight-
ly depressed (M/T)
OFF
BRAKE SW2
(Stop lamp switch)
• Ignition switch: ON
Brake pedal: Fully released
OFF
Brake pedal: Slightly depressed
ON
VHCL SPD CUT
• Ignition switch: ON
NON
LO SPEED CUT
• Ignition switch: ON
NON
AT OD MONITOR
• Ignition switch: ON
OFF
AT OD CANCEL
• Ignition switch: ON
OFF
Monitor Item
Condition
Values/Status
EC-938
< ECU DIAGNOSIS >
[MR20DE (WITH EURO-OBD)]
ECM
*: Accelerator pedal position sensor 2 signal and throttle position sensor 2 signal are converted by ECM internally. Thus, they differ from
ECM terminals voltage signal.
TERMINAL LAYOUT
PHYSICAL VALUES
NOTE:
• ECM is located behind the passenger side instrument lower panel. For this inspection, remove passenger
side instrument lower panel.
• Specification data are reference values and are measured between each terminal and ground.
• Pulse signal is measured by CONSULT-III.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECMs transistor. Use a ground other than ECM terminals, such as the ground.
CRUISE LAMP
• Ignition switch: ON
MAIN switch: Pressed at the 1st time
→
at the 2nd time
ON
→
OFF
SET LAMP
• MAIN switch: ON
• When vehicle speed: Between 40
km/h (25 MPH) and 144 km/h (89
MPH)
ASCD: Operating
ON
ASCD: Not operating
OFF
Monitor Item
Condition
Values/Status
PBIA9221J
Terminal No.
Wire
color
Description
Condition
Value
(Approx.)
+
-–
Signal name
Input/
Output
1
Ground
L
Throttle control motor
(Open)
Output
[Ignition switch: ON]
• Engine stopped
• Shift lever: D (CVT), 1st (M/
T)
• Accelerator pedal: Fully de-
pressed
3.2V
2
Ground
Y/R
Throttle control motor relay
power supply
Input
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)
3
Ground
BR/Y
Heated oxygen sensor 1
heater
Output
[Engine is running]
• Warm-up condition
• Engine speed: Below 3,600
rpm
2.9 - 8.8V
[Ignition switch: ON]
• Engine stopped
[Engine is running]
• Engine speed: below 3,600
rpm
BATTERY VOLTAGE
(11-14V)
JMBIA0324GB
JMBIA0325GB
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