Mazda CX-7 2007 Workshop Manual page 1373

DTC B1614[BCM]
DTC B1614 Rear wiper interval switch input circuit short to ground
DETECTION Short to GND in wiring harness between BCM and rear wiper and washer switch (INT)
CONDITION
• Short to GND in wiring harness between BCM terminal 3R and windshield wiper and washer switch
POSSIBLE terminal L
• Windshield wiper and washer switch malfunction
CAUSE
• BCM malfunction
WINDSHIELD WIPER AND WASHER
SWITCH WIRING HARNESS-SIDE
CONNECTOR
M
O
P N
Diagnostic procedure
STEP
1 INSPECT WINDSHIELD WIPER AND
WASHER SWITCH CONNECTOR
• Disconnect the windshield wiper and washer
switch connector.
• Inspect the windshield wiper and washer
switch connector terminals for poor
connection (such as damaged/pulled-out
pins, and corrosion).
• Is there any malfunction?
2 INSPECT BCM CONNECTOR
• Disconnect the BCM connector.
• Inspect the BCM connector terminals for
poor connection (such as damaged/pulled-
out pins, and corrosion).
• Is there any malfunction?
3 INSPECT WINDSHIELD WIPER AND
WASHER SWITCH SIGNAL CIRCUIT FOR
SHORT TO GND
• Inspect for continuity between BCM terminal
3R (wiring harness-side) and body GND.
• Is there continuity?
4 INSPECT WINDSHIELD WIPER AND
WASHER SWITCH
• Inspect the windshield wiper and washer
switch.
(See 09-19-8 WINDSHIELD WIPER AND
WASHER SWITCH INSPECTION.)
• Is there any malfunction?
5 VERIFY TROUBLESHOOTING COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear the DTC from the BCM memory using
the M-MDS.
• Perform the self-test.
(See 09-02F-26 BCM SELF-TEST[BCM].)
• Is the same DTC present?
ON-BOARD DIAGNOSTIC [BCM]
WINDSHIELD WIPER AND
WASHER SWITCH
F L
K E
C A
L J H F D B
INSPECTION
3R
BCM WIRING HARNESS-SIDE
CONNECTOR
3W 3U 3S 3Q 3O 3M 3K
3X 3V 3T 3R 3P 3N 3L
Yes Repair or replace the terminal, then go to Step 5.
No Go to the next step.
Yes Repair or replace the terminal, then go to Step 5.
No Go to the next step.
Yes Repair or replace the wiring harness for a possible short to
GND, then go to Step 5.
No Go to the next step.
Yes Replace the windshield wiper and washer switch, then go to
the next step.
(See 09-19-8 WIPER AND WASHER SWITCH REMOVAL/
INSTALLATION.)
No Go to the next step.
Yes Replace the BCM.
(See 09-40-1 BODY CONTROL MODULE (BCM)
REMOVAL/INSTALLATION.)
No DTC troubleshooting completed.
id0902f5831900
BCM
3I 3G 3E 3C 3A
3J 3H 3F 3D 3B
ACTION
09-02F–11
09-02F