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Infiniti G37 Coupe. Manual - part 594

ECM

EC-557

< ECU DIAGNOSIS >

[VQ37VHR]

*1: 1st trip DTC No. is the same as DTC No.

*2: This number is prescribed by SAE J2012.

*3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN.

*4: The troubleshooting for this DTC needs CONSULT-III.

*5: When the fail-safe operations for both self-diagnoses occur, the MIL illuminates.

*6: SRT code will not be set if the self-diagnostic result is NG.

*7: When the ECM is in the mode of displaying SRT status, MIL may flash. For the details, refer to “How to Display SRT Status”.

How to Set SRT Code

INFOID:0000000001734352

To set all SRT codes, self-diagnosis for the items indicated above must be performed one or more times. Each
diagnosis may require a long period of actual driving under various conditions.

WITH CONSULT-III

Perform corresponding DTC Confirmation Procedure one by one based on Performance Priority in the table
on “SRT Item”.

WITHOUT CONSULT-III

The most efficient driving pattern in which SRT codes can be properly set is explained on the next page. The
driving pattern should be performed one or more times to set all SRT codes.

P2100

2100

ETC MOT PWR-B1

—

EC-404

P2101

2101

ETC FNCTN/CIRC-B1

—

EC-392

P2103

2103

ETC MOT PWR

—

EC-404

P2118

2118

ETC MOT-B1

—

EC-396

P2119

2119

ETC ACTR-B1

—

EC-399

P2122

2122

APP SEN 1/CIRC

—

EC-458

P2123

2123

APP SEN 1/CIRC

—

EC-458

P2127

2127

APP SEN 2/CIRC

—

EC-462

P2128

2128

APP SEN 2/CIRC

—

EC-462

P2132

2132

TP SEN 1/CIRC-B2

—

EC-252

P2133

2133

TP SEN 1/CIRC-B2

—

EC-252

P2135

2135

TP SENSOR-B1

—

EC-401

P2138

2138

APP SENSOR

—

EC-466

P2A00

2A00

A/F SENSOR1 (B1)

—

EC-471

P2A03

2A03

A/F SENSOR1 (B2)

—

EC-471

DTC*

Items

(CONSULT-III screen terms)

SRT code

Trip

MIL

Reference

page

CONSULT-III

GST*

ECM*

EC-558

< ECU DIAGNOSIS >

[VQ37VHR]

ECM

DRIVING PATTERN

• The time required for each diagnosis varies with road surface conditions, weather, altitude, individual driving

habits, etc.
Zone A refers to the range where the time, required for the diagnosis under normal conditions*, is the short-
est.
Zone B refers to the range where the diagnosis can still be performed if the diagnosis is not completed within
zone A.

*: Normal conditions refer to the following:

PBIB3455E

ECM

EC-559

< ECU DIAGNOSIS >

[VQ37VHR]

• Sea level
• Flat road
• Ambient air temperature: 20 - 30

C (68 - 86

• Diagnosis is performed as quickly as possible under normal conditions.

Under different conditions [For example: ambient air temperature other than 20 - 30

C (68 - 86

F)], diagno-

sis may also be performed.

Pattern 1:
• The engine is started at the engine coolant temperature of

−

10 to 35

C (14 to 95

(where the voltage between the ECM terminal 71 and ground is 3.0 - 4.3V).

• The engine must be operated at idle speed until the engine coolant temperature is greater than 70

(158

F) (where the voltage between the ECM terminal 71 and ground is lower than 1.4V).

• The engine is started at the fuel tank temperature of warmer than 0

C (32

F) (where the voltage

between the ECM terminal 106 and ground is less than 4.1V).

Pattern 2:
• When steady-state driving is performed again even after it is interrupted, each diagnosis can be conducted.

In this case, the time required for diagnosis may be extended.

Pattern 3:
• Operate vehicle following the driving pattern shown in the figure.
• Release the accelerator pedal during decelerating vehicle speed

from 90 km/h (56 MPH) to 0 km/h (0 MPH).

Pattern 4:
• The accelerator pedal must be held very steady during steady-

state driving.

• If the accelerator pedal is moved, the test must be conducted all

over again.

*1: Depress the accelerator pedal until vehicle speed is 90 km/h (56
MPH), then release the accelerator pedal and keep it released for
more than 10 seconds. Depress the accelerator pedal until vehicle
speed is 90 km/h (56 MPH) again.
*2: Checking the vehicle speed with GST is advised.

Suggested Transmission Gear Position for A/T Models

Set the selector lever in the D position with the overdrive switch turned ON.

Suggested Upshift Speeds for M/T Models

Shown below are suggested vehicle speeds for shifting into a higher gear. These suggestions relate to fuel
economy and vehicle performance. Actual upshift speeds will vary according to road conditions, the weather
and individual driving habits.

Unit: km/h (MPH)

Suggested Maximum Speed in Each Gear

Downshift to a lower gear if the engine is not running smoothly, or if you need to accelerate.
Do not exceed the maximum suggested speed (shown below) in any gear. For level road driving, use the high-
est gear suggested for that speed. Always observe posted speed limits and drive according to the road condi-
tions to ensure sage operation. Do not over-rev the engine when shifting to a lower gear as it may cause
engine damage or loss of vehicle control.

PBIB2244E

Gear change

For normal acceleration in low altitude areas

[less than 1,219 m (4,000 ft)]

For quick acceleration in low altitude areas or in

high altitude areas [over 1,219 m (4,000 ft)]

1st to 2nd

13 (8)

24 (15)

2nd to 3rd

26 (16)

40 (25)

3rd to 4th

40 (25)

64 (40)

4th to 5th

50 (30)

72 (45)

5th to 6th

53 (33)

80 (50)

Gear

km/h (MPH)

1st

63 (39)

2nd

103 (64)

3rd

148 (92)

4th

—

EC-560

< ECU DIAGNOSIS >

[VQ37VHR]

ECM

Test Value and Test Limit

INFOID:0000000001734353

The following is the information specified in Service $06 of SAE J1979.
The test value is a parameter used to determine whether a system/circuit diagnostic test is OK or NG while
being monitored by the ECM during self-diagnosis. The test limit is a reference value which is specified as the
maximum or minimum value and is compared with the test value being monitored.
These data (test value and test limit) are specified by Test ID (TID) and Component ID (CID) and can be dis-
played on the GST screen.

5th

—

6th

—

Gear

km/h (MPH)

Item

OBD-

MID

Self-diagnostic test item

DTC

Test value and Test

limit

(GST display)

Description

TID

Unit and

Scaling

HO2S

01H

Air fuel ratio (A/F) sensor 1
(Bank 1)

P0131

83H

0BH

Minimum sensor output voltage
for test cycle

P0131

84H

0BH

Maximum sensor output voltage
for test cycle

P0130

85H

0BH

Minimum sensor output voltage
for test cycle

P0130

86H

0BH

Maximum sensor output voltage
for test cycle

P0133

87H

04H

Response rate: Response ratio
(Lean to Rich)

P0133

88H

04H

Response rate: Response ratio
(Rich to Lean)

P2A00

89H

84H

The amount of shift in air fuel ratio

P2A00

8AH

84H

The amount of shift in air fuel ratio

P0130

8BH

0BH

Difference in sensor output volt-
age

P0133

8CH

83H

Response gain at the limited fre-
quency

02H

Heated oxygen sensor 2
(Bank 1)

P0138

07H

0CH

Minimum sensor output voltage
for test cycle

P0137

08H

0CH

Maximum sensor output voltage
for test cycle

P0138

80H

0CH

Sensor output voltage

P0139

81H

0CH

Difference in sensor output volt-
age

03H

Heated oxygen sensor 3
(Bank 1)

P0143

07H

0CH

Minimum sensor output voltage
for test cycle

P0144

08H

0CH

Maximum sensor output voltage
for test cycle

P0146

80H

0CH

Sensor output voltage

P0145

81H

0CH

Difference in sensor output volt-
age

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