Nissan Altima L32. Instruction — part 989
PCS-20
< COMPONENT DIAGNOSIS >
[IPDM E/R]
U1000 CAN COMM CIRCUIT
COMPONENT DIAGNOSIS
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000004202410
.
DTC Logic
INFOID:0000000004202411
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
Diagnosis Procedure
INFOID:0000000004202412
1.
PERFORM SELF DIAGNOSTIC
1. Turn ignition switch ON and wait for 2 second or more.
2. Check “Self Diagnostic Result” of IPDM E/R.
Is “CAN COMM CIRCUIT” displayed?
YES
>> Refer to
NO
>> Refer to
GI-42, "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 (Combination meter)
PCS
B2098 IGNITION RELAY ON STUCK
PCS-21
< COMPONENT 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:0000000004202413
• 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 (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:0000000004202414
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000004202415
1.
PERFORM SELF DIAGNOSIS
1. Turn the ignition switch ON.
2. Erase “Self Diagnostic Result” of IPDM E/R.
3. Turn 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. Refer to
PCS-48, "Removal and Installation"
.
NO
>> Refer to
GI-42, "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-22
< COMPONENT DIAGNOSIS >
[IPDM E/R]
B2099 IGNITION RELAY OFF STUCK
B2099 IGNITION RELAY OFF STUCK
Description
INFOID:0000000004202416
• 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 (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:0000000004202417
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000004202418
1.
PERFORM SELF DIAGNOSIS
1. Turn the ignition switch ON.
2. Erase “Self Diagnostic Result”.
3. Turn ignition switch OFF.
4. Turn the ignition switch ON. Check “Self Diagnostic Result” again.
Is “IGN RELAY OFF” displayed?
YES
>> Replace IPDM E/R. Refer to
PCS-48, "Removal and Installation"
NO
>> Refer to
GI-42, "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
PCS
POWER SUPPLY AND GROUND CIRCUIT
PCS-23
< COMPONENT DIAGNOSIS >
[IPDM E/R]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis Procedure
INFOID:0000000004202419
1.
CHECK FUSES AND FUSIBLE LINK
Check that the following IPDM E/R fuses or fusible link are not blown.
Is the fuse blown?
YES
>> Replace the blown fuse or fusible link after repairing the affected circuit.
NO
>> GO TO 2
2.
CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connectors.
3. Check voltage between IPDM E/R harness connector and
ground.
Is the measurement value normal?
YES
>> GO TO 3
NO
>> Repair harness or connector.
3.
CHECK GROUND CIRCUIT
Check continuity between IPDM E/R harness connectors and
ground.
Does continuity exist?
YES
>> Inspection End.
NO
>> Repair harness or connector.
Terminal No.
Signal name
Fuses and fusible link No.
1, 2
Battery power supply
B, D
—
42
43
Terminals
Voltage (V)
(Approx.)
(+)
(
−)
IPDM E/R
Connector
Terminal
Ground
E16
1
Battery voltage
2
ALCIA0033ZZ
IPDM E/R
Ground
Continuity
Connector
Terminal
A: E18
12
Yes
B: E17
41
ALCIA0034ZZ
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