Infiniti I30 (A33). Manual — part 137
LAN SIGNAL 1 — LAN Monitoring
NHBR0084
DIAGNOSTIC PROCEDURE
NHBR0084S01
Malfunction code No. 85
1
INSPECTION START
Self-diagnostic item “LAN SIGNAL 1” appears on display.
SBR541E
©
GO TO 2.
2
CHECK SELF-DIAGNOSIS
Perform self-diagnostic procedures for ECM.
Does “ABS-TCS communication” (self-diagnostic item) appears on display?
Yes
©
Check LAN circuit. Refer to “CHECK LAN CIRCUIT”, BR-133.
No
©
GO TO 3.
3
CHECK CIRCUIT
Check ECM to battery power circuits, harness and connectors.
OK or NG
OK
©
I
Repeat self-diagnostic procedures for control unit.
I
If NG, replace control unit.
NG
©
Repair or replace affected parts.
GI
MA
EM
LC
EC
FE
AT
AX
SU
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMS
TCS
LAN SIGNAL 1 — LAN Monitoring
BR-131
LAN SIGNAL 2 — LAN Communication Start
Procedures Incomplete
=NHBR0085
DIAGNOSTIC PROCEDURE
NHBR0085S01
Malfunction code No. 92
1
INSPECTION START
Self-diagnostic item “LAN SIGNAL 2” appears on display.
SBR541E
©
GO TO 2.
2
CHECK ENGINE SYSTEM
Is self-diagnosis for ECM able to start?
Yes
©
GO TO 3.
No
©
I
Repair or replace data link connector to ECM harness and connector.
I
Faulty ECM. (Malfunction indicator lamp remains “ON” during operation.)
3
CHECK SELF-DIAGNOSIS
Does [ECM-ABSTCS COMM NG] (self-diagnostic item) appear on display?
Yes
©
Check LAN circuit. Refer to “CHECK LAN CIRCUIT”, BR-131.
No
©
GO TO 4.
4
CHECK STARTER SIGNAL
Is starter signal input to ECM?
Yes
©
I
If other items appear on display, repair or replace affected areas.
I
Repeat self-diagnostic procedures for control unit.
No
©
Repair or replace starter switch system.
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMS
TCS
LAN SIGNAL 2 — LAN Communication Start Procedures Incomplete
BR-132
LAN CIRCUITS 1, LAN CIRCUITS 2 — LAN
Communication System Failure
=NHBR0086
DIAGNOSTIC PROCEDURE
NHBR0086S01
Malfunction code No. 96, 98
1
INSPECTION START
Self-diagnostic item “LAN CIRCUITS 1” or “LAN CIRCUITS 2” appears on display.
SBR541E
©
GO TO 2.
2
CHECK ENGINE SYSTEM
Perform self-diagnostic procedures for ECM.
Does self-diagnostic item [ECM-ABSTCS COMM NG] appear on display?
Yes
©
GO TO 6.
No
©
GO TO 3.
3
CHECK SELF-DIAGNOSIS
Does “ABS-TCS C/U SIGNAL” appear on display?
Yes
©
GO TO 4.
No
©
Faulty control unit
4
CHECK SELF-DIAGNOSIS
Does any other control unit self-diagnostic items appears on display?
Yes
©
Repair or replace affected items shown on display.
No
©
GO TO 5.
5
CHECK VOLTAGE
Check if battery voltage is too low (less than 9V) or battery terminals are loose.
OK
©
Repeat self-diagnostic procedures.
NG
©
Faulty control unit
GI
MA
EM
LC
EC
FE
AT
AX
SU
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMS
TCS
LAN CIRCUITS 1, LAN CIRCUITS 2 — LAN Communication System Failure
BR-133
6
CHECK LAN CIRCUIT
Check continuity between connector terminals.
SBR542E
MTBL0320
Does continuity exist?
Yes
©
Repeat self-diagnostic procedures.
No
©
Check the following.
I
Harness connectors E91, F48, F50
I
Harness for open or short between control unit connector and TCM connector
I
Harness for open or short between ECM connector and TCM connector
If NG, repair harness or connectors.
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMS
TCS
LAN CIRCUITS 1, LAN CIRCUITS 2 — LAN Communication System Failure (Cont’d)
BR-134
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