Infiniti FX35, FX50 (S51). Manual — part 1414
PCS-14
< SYSTEM DESCRIPTION >
[IPDM E/R]
DIAGNOSIS SYSTEM (IPDM E/R)
ACTIVE TEST
Test item
IGN RLY1 -REQ
[Off/On]
Displays the status of the ignition switch ON signal received from BCM via CAN
communication.
IGN RLY
[Off/On]
×
Displays the status of the ignition relay judged by IPDM E/R.
PUSH SW
[Off/On]
Displays the status of the push-button ignition switch judged by IPDM E/R.
INTER/NP SW
[Off/On]
Displays the status of the shift position judged by IPDM E/R.
ST RLY CONT
[Off/On]
Displays the status of the starter relay status signal received from BCM via CAN
communication.
IHBT RLY -REQ
[Off/On]
Displays the status of the starter control relay signal received from BCM via CAN
communication.
ST/INHI RLY
[Off/ ST /INHI/UNKWN]
Displays the status of the starter relay and starter control relay judged by IPDM
E/R.
DETENT SW
[Off/On]
Displays the status of the A/T shift selector (detention switch) judged by IPDM E/
R.
S/L RLY -REQ
[Off/On]
Displays the status of the steering lock relay request received from BCM via CAN
communication.
S/L STATE
[LOCK/UNLOCK/UNKWN]
Displays the status of the steering lock judged by IPDM E/R.
DTRL REQ
[Off]
NOTE:
The item is indicated, but not monitored.
OIL P SW
[Open/Close]
Displays the status of the oil pressure switch judged by IPDM E/R.
HOOD SW
[Off/On]
Displays the status of the hood switch judged by IPDM E/R.
HL WASHER REQ
[Off]
NOTE:
The item is indicated, but not monitored.
THFT HRN REQ
[Off/On]
Displays the status of the theft warning horn request signal received from BCM
via CAN communication.
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.
LH
RH
HORN
On
Operates horn relay 1 and horn relay 2 for 20 ms.
FRONT WIPER
Off
OFF
Lo
Operates the front wiper relay.
Hi
Operates the front wiper relay and front wiper high relay.
MOTOR FAN
1
OFF
2
Outputs 50% pulse duty signal (PWM signal) to the cooling fan control module.
3
Outputs 80% pulse duty signal (PWM signal) to the cooling fan control module.
4
Outputs 100% pulse duty signal (PWM signal) to the cooling fan control module.
PCS
DIAGNOSIS SYSTEM (IPDM E/R)
PCS-15
< SYSTEM DESCRIPTION >
[IPDM E/R]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
HEAD LAMP WASHER
On
NOTE:
The item is indicated, but cannot be tested.
EXTERNAL LAMPS
Off
OFF
TAIL
Operates the tail lamp relay.
Lo
Operates the headlamp low relay.
Hi
Operates the headlamp low relay and ON/OFF the headlamp high relay at 1 sec-
ond intervals.
Fog
Operates the front fog lamp relay.
Test item
Operation
Description
PCS-16
< DTC/CIRCUIT DIAGNOSIS >
[IPDM E/R]
U1000 CAN COMM CIRCUIT
DTC/CIRCUIT DIAGNOSIS
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000005240640
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-30, "CAN Communication Signal Chart"
DTC Logic
INFOID:0000000005240641
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000005240642
1.
PERFORM SELF DIAGNOSTIC
1.
Turn the ignition switch ON and wait for 2 seconds or more.
2.
Check “Self Diagnostic Result” of IPDM E/R.
Is “CAN COMM CIRCUIT” displayed?
YES
>> Refer to
LAN-20, "Trouble Diagnosis Flow Chart"
NO
>> Refer to
GI-36, "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
CAN communication system
PCS
B2098 IGNITION RELAY ON STUCK
PCS-17
< DTC/CIRCUIT DIAGNOSIS >
[IPDM E/R]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
B2098 IGNITION RELAY ON STUCK
Description
INFOID:0000000005240643
• 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 times 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:0000000005240644
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000005240645
1.
PERFORM SELF DIAGNOSIS
1.
Turn the ignition switch ON.
2.
Erase “Self Diagnostic Result” of IPDM E/R.
3.
Turn the ignition switch OFF, and wait for 1 second or more.
4.
Turn the ignition switch ON. Check “Self Diagnostic Result” again.
Is “IGN RELAY ON” displayed?
YES
>> Replace IPDM E/R.
NO
>> Refer to
GI-36, "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
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