NISSAN TEANA 2003 Service Manual

TROUBLE DIAGNOSIS
SRS-7
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D
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SRS

TROUBLE DIAGNOSISPFP:00004
Trouble Diagnosis IntroductionBHS00043
CAUTION:

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.

Do not attempt to repair, splice or modify the SRS wiring harness. If the harness is damaged,
replace it with a new one.

Keep ground portion clean.
DIAGNOSIS FUNCTION
The SRS self-diagnosis results can be read by using “AIR BAG” warning lamp and/or CONSULT-II.
The User mode is exclusively prepared for the customer (driver). This mode warns the driver of a system mal-
function through the operation of the “AIR BAG” warning lamp.
The Diagnosis mode allows the technician to locate and inspect the malfunctioning part.
The mode applications for the “AIR BAG” warning lamp and CONSULT-II are as follows:
HOW TO PERFORM TROUBLE DIAGNOSES FOR QUICK AND ACCURATE REPAIR
A good understanding of the malfunction conditions can make troubleshooting faster and more accurate.
In general, each customer feels differently about a malfunction. It is important to fully understand the symp-
toms or conditions for a customer complaint.
Information from Customer
WHAT..... Vehicle model
WHEN..... Date, Frequencies
WHERE..... Road conditions
HOW..... Operating conditions, Symptoms
Preliminary Check
Check that the following parts are in good order.

Battery (Refer to SC-4, "How to Handle Battery" .)

Fuse (Refer to SRS-11, "Wiring Diagram — SRS —" .)

System component-to-harness connections
User mode Diagnosis mode Display type
“AIR BAG” warning lamp X X ON-OFF operation
CONSULT-II — X Monitoring

SRS-8
TROUBLE DIAGNOSIS

WORK FLOW
PHIA0217E
*1:SRS-7, "Preliminary Check".*2:SRS-16, "SRS Operation Check".*3:SRS-18, "DIAGNOSTIC PROCE-
DURE 2".
*4:SRS-29, "
DIAGNOSTIC PROCE-
DURE 6".*5:SRS-22, "
DIAGNOSTIC PROCEDURE 3".*6:SRS-29, "DIAGNOSTIC PROCE-
DURE 6".

TROUBLE DIAGNOSIS
SRS-9
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D
E
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MA
B
SRS

Component Parts LocationBHS00044
PHIA1340E
1. Driver air bag module 2. Spiral cable 3. Front passenger air bag module
4. Front side air bag modules 5. Seat belt pre-tensioner (LH/RH) 6. Diagnosis sensor unit
7.Side air bag (Satellite) sensor (LH/
RH)8. Side curtain air bag modules 9. Crash zone sensor

SRS-10
TROUBLE DIAGNOSIS

SchematicBHS00045
THWM0075E

TROUBLE DIAGNOSIS
SRS-11
C
D
E
F
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I
J
K
L
MA
B
SRS

Wiring Diagram — SRS —BHS00046
THWM0234E

SRS-12
TROUBLE DIAGNOSIS

THWM0235E

TROUBLE DIAGNOSIS
SRS-13
C
D
E
F
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K
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MA
B
SRS

THWM0078E

SRS-14
TROUBLE DIAGNOSIS

CONSULT-II FunctionBHS00047
DIAGNOSIS MODE FOR CONSULT-II

“SELF-DIAG [CURRENT]”
A current Self-diagnosis result (also indicated by the number of warning lamp flashes in the Diagnosis
mode) is displayed on the CONSULT-II screen in real time. This refers to a malfunctioning part requiring
repairs.

“SELF-DIAG [PAST]”
Diagnosis results previously stored in the memory are displayed on the CONSULT-II screen. The stored
results are not erased until memory erasing is executed.

“TROUBLE DIAG RECORD”
With TROUBLE DIAG RECORD, diagnostic results previously erased by a reset operation can be dis-
played on the CONSULT-II screen.

“ECU DISCRIMINATED NO.”
The diagnosis sensor unit for each vehicle model is assigned
with its own, individual classification number. This number is dis-
played on the CONSULT-II screen, as shown. When replacing
the diagnosis sensor unit, refer to the part number for the com-
patibility. After installation, replacement with a correct unit can
be checked by confirming this classification number on the
CONSULT-II screen.
After repair, make sure the discriminated number of diagnosis
sensor unit installed to vehicle are same. Refer to SRS-47,
"ECU DISCRIMINATED NO." .
HOW TO CHANGE SELF-DIAGNOSIS MODE WITH CONSULT-II
From User Mode to Diagnosis Mode
After selecting “AIR BAG” on the “SELECT SYSTEM” screen, User mode automatically changes to Diagnosis
mode.
From Diagnosis Mode to User Mode
To return to User mode from Diagnosis mode, touch “BACK” key of CONSULT-II until “SELECT SYSTEM”
appears. Then diagnosis mode automatically changes to User mode.
PHIA0218E
SRS803
SRS804

TROUBLE DIAGNOSIS
SRS-15
C
D
E
F
G
I
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K
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MA
B
SRS

HOW TO ERASE SELF-DIAGNOSIS RESULTS

“SELF-DIAG [CURRENT]”
A current Self-diagnosis result is displayed on the CONSULT-II screen in real time.
After the malfunction is repaired completely, no malfunction is detected on “SELF-DIAG [CURRENT]”.

“SELF-DIAG [PAST]”
Return to the “SELF-DIAG [CURRENT]” CONSULT-II screen by touching “BACK” key of CONSULT-II and
select “SELF-DIAG [CURRENT]” in SELECT DIAG MODE. Touch “ERASE” in “SELF-DIAG [CURRENT]”
mode.
NOTE:
If the memory of the malfunction in “SELF-DIAG [PAST]” is not erased, the User mode shows the system
malfunction by the operation of the warning lamp even if the malfunction is repaired completely.

“TROUBLE DIAG RECORD”
The memory of “TROUBLE DIAG RECORD” cannot be erased.
Self-Diagnosis Function (Without CONSULT-II)BHS00048

The reading of these results is accomplished “User mode” and “Diagnosis mode”.

After a malfunction is repaired, turn ignition switch ON. Diagnosis mode returns to the User mode. At that
time, the self-diagnostic result is cleared.
HOW TO CHANGE SELF-DIAGNOSIS MODE WITHOUT CONSULT-II
HOW TO ERASE SELF-DIAGNOSTIC RESULTS
After a malfunction is repaired, turn the ignition switch OFF for at least one second, then back ON. Diagnosis
mode returns to the User mode. At that time, the self-diagnosis result is cleared.
SRS701
PHIA0709E

SRS-16
TROUBLE DIAGNOSIS

SRS Operation CheckBHS00049
DIAGNOSTIC PROCEDURE 1
Checking Air Bag Operation by Using “AIR BAG” Warning Lamp — User Mode
1. Turn ignition switch from OFF to ON, and make sure that the air bag warning lamp blinks.
2. Compare the SRS air bag warning lamp blinking pattern with the
examples.
BF-1845D