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Infiniti G35 (V35) Sedan. Manual - part 990

PCS-14

< FUNCTION DIAGNOSIS >

[IPDM E/R]

DIAGNOSIS SYSTEM (IPDM E/R)

ACTIVE TEST

Test item

HORN CHIRP
[Off/On]

Displays the status of the horn reminder signal received from BCM via CAN com-
munication.

CRNRNG LMP REQ
[Off]

NOTE:
The item is indicated, but not monitored.

Monitor Item

[Unit]

MAIN SIG-

NALS

Description

Test item

Operation

Description

CORNERING LAMP

Off

NOTE:
The item is indicated, but cannot be tested.

HORN

Operates horn relay 1 and horn relay 2 for 20 ms.

FRONT WIPER

Off

OFF

Operates the front wiper relay.

Operates the front wiper relay and front wiper high relay.

MOTOR FAN

OFF

Outputs 50% pulse duty signal (PWM signal) to the cooling fan control module.

Outputs 80% pulse duty signal (PWM signal) to the cooling fan control module.

Outputs 100% pulse duty signal (PWM signal) to the cooling fan control module.

HEAD LAMP WASHER

NOTE:
The item is indicated, but cannot be tested.

EXTERNAL LAMPS

Off

OFF

TAIL

Operates the tail lamp relay.

Operates the headlamp low relay.

Operates the headlamp low relay and ON/OFF the headlamp high relay at 1 sec-
ond intervals.

Fog

Operates the front fog lamp relay.

PCS

U1000 CAN COMM CIRCUIT

PCS-15

< COMPONENT DIAGNOSIS >

[IPDM E/R]

COMPONENT DIAGNOSIS

U1000 CAN COMM CIRCUIT

Description

INFOID:0000000000964184

CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control unit, and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less
wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart. Refer to

LAN-28, "CAN Communication Signal Chart"

DTC Logic

INFOID:0000000000964185

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

Diagnosis Procedure

INFOID:0000000000964186

PERFORM SELF DIAGNOSTIC

Turn ignition switch ON and wait for 2 second or more.

Check “Self Diagnostic Result” of IPDM E/R.

Is “CAN COMM CIRCUIT” displayed?

YES

>> Refer to

LAN-18, "Trouble Diagnosis Flow Chart"

>> Refer to

GI-39, "Intermittent Incident"

DTC

CONSULT-III display

description

DTC Detection Condition

Possible cause

U1000

CAN COMM CIRCUIT

When IPDM E/R cannot communicate CAN
communication signal continuously for 2
seconds or more

In CAN communication system, any item (or items)
of the following listed below is malfunctioning.
• Transmission
• Receiving (ECM)
• Receiving (BCM)
• Receiving (Unified meter and A/C amp.)

PCS-16

< COMPONENT DIAGNOSIS >

[IPDM E/R]

B2098 IGNITION RELAY ON STUCK

B2098 IGNITION RELAY ON STUCK

Description

INFOID:0000000000964187

• IPDM E/R operates the ignition relay when it receives an ignition switch ON signal from BCM via CAN com-

munication.

• Turn the ignition relay OFF by pressing the push-button ignition switch once when the vehicle speed is 4 km/

h (2.5 MPH) or less.

• Turn the ignition relay OFF with the following operation when the vehicle speed is more than 4 km/h (2.5

MPH) or when an abnormal condition occurs in CAN communication from the unified meter and A/C
amp.(Emergency OFF)

- Press and hold the push-button ignition switch for 2 seconds or more.
- Press the push-button ignition switch 3 time within 1.5 seconds.
NOTE:
The ignition relay does not turn ON for 3 seconds after emergency OFF even if the push-button ignition switch
is pressed.

DTC Logic

INFOID:0000000000964188

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000000964189

PERFORM SELF DIAGNOSIS

Turn the ignition switch ON.

Erase “Self Diagnostic Result” of IPDM E/R.

Turn ignition switch OFF, and wait for 1 second or more.

Turn the ignition switch ON. Check “Self Diagnostic Result” again.

Is “IGN RELAY ON” displayed?

YES

>> Replace IPDM E/R.

>> Refer to

GI-39, "Intermittent Incident"

DTC

CONSULT-III dis-

play description

DTC Detection Condition

Possible causes

B2098

IGN RELAY ON

The ignition relay ON is detected for 1 second at ignition switch OFF
(CPU monitors the status at the contact and excitation coil circuits of
the ignition relay inside it)

Ignition relay malfunction

PCS

B2099 IGNITION RELAY OFF STUCK

PCS-17

< COMPONENT DIAGNOSIS >

[IPDM E/R]

B2099 IGNITION RELAY OFF STUCK

Description

INFOID:0000000000964190

• IPDM E/R operates the ignition relay when it receives an ignition switch ON signal from BCM via CAN com-

munication.

• Turn the ignition relay OFF by pressing the push-button ignition switch once when the vehicle speed is 4 km/

h (2.5 MPH) or less.

• Turn the ignition relay OFF with the following operation when the vehicle speed is more than 4 km/h (2.5

MPH) or when an abnormal condition occurs in CAN communication from the unified meter and A/C
amp.(Emergency OFF)

DTC Logic

INFOID:0000000000964191

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000000964192

PERFORM SELF DIAGNOSIS

Turn the ignition switch ON.

Erase “Self Diagnostic Result”.

Turn ignition switch OFF.

Turn the ignition switch ON. Check “Self Diagnostic Result” again.

Is “IGN RELAY OFF” displayed?

YES

>> Replace IPDM E/R.

>> Refer to

GI-39, "Intermittent Incident"

DTC

CONSULT-III dis-

play description

DTC Detection Condition

Possible causes

B2099

IGN RELAY OFF

The ignition relay OFF is detected for 1 second at ignition switch ON
(CPU monitors the status at the contact and excitation coil circuits of
the ignition relay inside it)

Ignition relay malfunction

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