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SRS-12
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
TROUBLE DIAGNOSIS
Trouble Diagnosis IntroductionINFOID:0000000001524161
CAUTION:
Do not use electrical test equipment on any circuit related to the SRS unless instructed in this Ser-
vice Manual. SRS wiring harnesses can be identifi ed by yellow and/or orange harnesses or harness
connectors.
Do not repair, splice or modify the SRS wiring harn ess. If the harness is damaged, replace it with a
new one.
Keep ground portion clean.
DIAGNOSIS FUNCTION
The SRS self-diagnostic results can be read by us ing “AIR BAG” warning lamp and/or CONSULT-III.
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” wa rning lamp and CONSULT-III are as follows:
HOW TO PERFORM TROUBLE DIAGNOSIS 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 malf unction. 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
Make sure the following parts are in good order.
Battery (Refer to SC-4, "
How to Handle Battery".)
Fuse (Refer to SRS-16, "
Wiring Diagram - SRS -".)
System component-to-harness connections
Work Flow
OVERALL SEQUENCE
User mode Diagnosis mode Display type
“AIR BAG” warning lamp X X ON-OFF operation CONSULT-III — X Monitoring
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WW-14
< SERVICE INFORMATION >
FRONT WIPER AND WASHER SYSTEM
Terminal and Reference Value for IPDM E/R
INFOID:0000000001328549
How to Proceed with Trouble DiagnosisINFOID:0000000001328550
1. Confirm the symptoms and customer complaint.
2. Understand operation description and function description. Refer to WW-4, "
System Description".
3. Perform the Preliminary Check. Refer to WW-14, "
Preliminary Check".
4. Check symptom and repair or r eplace the cause of malfunction.
5. Does the front wiper and washer operate norma lly? If YES, GO TO 6. If NO, GO TO 4.
6. INSPECTION END
Preliminary CheckINFOID:0000000001328551
CHECK POWER SUPPLY AND GROUND CIRCUIT
1.CHECK FUSE
Check for blown fuses.
Refer to WW-8, "
Wiring Diagram - WIPER -".
OK or NG
OK >> GO TO 2
NG >> If fuse is blown, be sure to eliminate caus e of malfunction before installing new fuse, Refer to PG-
3, "Schematic".
2.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
Te r m i n a l No. Wire
color Signal name Measuring condition
Reference value
Ignition
switch Operation or condition
21 P Low speed signal ON Wiper switch OFF Approx. 0 V
LOW Battery voltage
31 PU High speed signal ON Wiper switch OFF Approx. 0 V
HI Battery voltage
32 L Wiper auto - stop signal ON Wiper operating Battery voltage
Wiper stopped Approx. 0 V
38 B Ground ON — Approx. 0 V
44 OR Front and rear washer pump
power supply ON — Battery voltage
48 L CAN-H — — —
49 R CAN-L — — —
60 B Ground ON — Approx. 0 V
Unit Power source Fuse and fusible link No.
Front and Rear washer pump Ignition switch ON or START 84
Front wiper motor, front wiper rela y, front wiper HI relay Battery 73
BCM BatteryM
22
Ignition switch ON or START 1
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WW-36
< SERVICE INFORMATION >
REAR WIPER AND WASHER SYSTEM
2. Understand operation description and function description. Refer to WW-30, "System Description".
3. Perform the Preliminary Check. Refer to WW-36, "
Preliminary Check".
4. Check symptom and repair or r eplace the cause of malfunction.
5. Does the rear wiper and washer operate no rmally? If YES, GO TO 6. If NO, GO TO 4.
6. INSPECTION END
Preliminary CheckINFOID:0000000001328581
CHECK POWER SUPPLY AND GROUND CIRCUIT
1.CHECK FUSES
Check for blown fuses.
Refer to WW-32, "Wiring Diagram - WIP/ R -".
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate caus e of malfunction before installing new fuse, Refer to PG-
3, "Schematic".
2.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check voltage between BCM harness connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3.CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
CONSULT-III Functions (BCM)INFOID:0000000001328582
CONSULT-III can display each diagnostic item using the diagnostic test mode shown following.
Unit Power source Fuse and fusible link No.
BCM BatteryM
22
Ignition ON or START 1
Front and rear washer pump Ignition ON or START 84
(+) (-)Ignition switch position
BCM connector Terminal OFF ON M3 38 GroundApprox. 0 V Battery voltage
M4 42 Battery voltage Battery voltage
55 Battery voltage Battery voltage
PKIA7520E
BCM connector Terminal
GroundContinuity
M4 49
Ye s
52
SKIA5294E
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