Mazda CX 7. Manual — part 344
ON-BOARD DIAGNOSTIC [BCM]
09-02F–11
09-02F
DTC B1614[BCM]
id0902f5831900
Diagnostic procedure
DTC B1614
Rear wiper interval switch input circuit short to ground
DETECTION
CONDITION
Short to GND in wiring harness between BCM and rear wiper and washer switch (INT)
POSSIBLE
CAUSE
• Short to GND in wiring harness between BCM terminal 3R and windshield wiper and washer switch
terminal L
• Windshield wiper and washer switch malfunction
• BCM malfunction
STEP
INSPECTION
ACTION
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?
Yes
Repair or replace the terminal, then go to Step 5.
No
Go to the next step.
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?
Yes
Repair or replace the terminal, then go to Step 5.
No
Go to the next step.
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?
Yes
Repair or replace the wiring harness for a possible short to
GND, then go to Step 5.
No
Go to the next step.
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?
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.
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?
Yes
Replace the BCM.
(See 09-40-1 BODY CONTROL MODULE (BCM)
REMOVAL/INSTALLATION.)
No
DTC troubleshooting completed.
3R
L
WINDSHIELD WIPER AND
WASHER SWITCH
BCM
F
WINDSHIELD WIPER AND WASHER
SWITCH WIRING HARNESS-SIDE
CONNECTOR
BCM WIRING HARNESS-SIDE
CONNECTOR
3E
3G
3I
3K
3M
3O
3A
3C
3N
3L
3P
3H
3D
3B
3F
3J
3Q
3R
3S
3T
3U
3V
3W
3X
F
M
N
O
P
A
B
C
D
E
H
K
J
L
1871-1U-06B(09-02F).fm 11 ページ 2006年3月15日 水曜日 午前11時41分
ON-BOARD DIAGNOSTIC [BCM]
09-02F–12
End Of Sie
DTC B1520[BCM]
id0902f5834300
DTC B1520
Hood switch ajar circuit open
DETECTION
CONDITION
Open circuit in wiring harness between BCM and hood latch switch
POSSIBLE
CAUSE
• Open circuit in wiring harness between BCM terminal 1A and hood latch switch terminal A
• Open circuit in wiring harness between hood latch switch terminal B and body GND
• Hood latch switch malfunction
• BCM malfunction
A
HOOD LATCH SWITCH
BCM
B
1A
HOOD LATCH SWITCH WIRING
HARNESS-SIDE CONNECTOR
BCM WIRING HARNESS-SIDE
CONNECTOR
B
A
1E
1G
1I
1K
1M
1O
1A
1C
1N
1L
1P
1H
1D
1B
1F
1J
1871-1U-06B(09-02F).fm 12 ページ 2006年3月15日 水曜日 午前11時41分
ON-BOARD DIAGNOSTIC [BCM]
09-02F–13
09-02F
Diagnostic procedure
End Of Sie
STEP
INSPECTION
ACTION
1
INSPECT HOOD LATCH SWITCH
CONNECTOR
• Turn the ignition switch off.
• Disconnect the hood latch switch connector.
• Inspect the hood latch switch connector
terminals for poor connection (such as
damaged/pulled-out pins, and corrosion).
• Is there any malfunction?
Yes
Repair or replace the terminal, then go to Step 6.
No
Go to the next step.
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?
Yes
Repair or replace the terminal, then go to Step 6.
No
Go to the next step.
3
INSPECT HOOD LATCH SWITCH SIGNAL
CIRCUIT FOR OPEN CIRCUIT
• Inspect for continuity between BCM terminal
1A (wiring harness-side) and hood latch
switch terminal A (wiring harness-side).
• Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness for a possible open
circuit, then go to Step 6.
4
INSPECT HOOD LATCH SWITCH GND
CIRCUIT FOR OPEN CIRCUIT
• Inspect for continuity between hood latch
switch terminal B (wiring harness-side) and
body GND.
• Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness for a possible open
circuit, then go to Step 6.
5
INSPECT HOOD LATCH SWITCH
• Inspect the hood latch switch.
(See 09-14-6 FRONT DOOR LATCH AND
LOCK ACTUATOR INSPECTION.)
• Is there any malfunction?
Yes
Replace the hood latch switch, then go to the next step.
(See 09-14-5 FRONT DOOR LATCH AND LOCK
ACTUATOR REMOVAL/INSTALLATION.)
No
Go to the next step.
6
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?
Yes
Replace the BCM.
(See 09-40-1 BODY CONTROL MODULE (BCM)
REMOVAL/INSTALLATION.)
No
DTC troubleshooting completed.
1871-1U-06B(09-02F).fm 13 ページ 2006年3月15日 水曜日 午前11時41分
ON-BOARD DIAGNOSTIC [BCM]
09-02F–14
DTC B1566[BCM]
id0902f5838200
Diagnostic procedure
DTC B1566
Door ajar circuit short to ground
DETECTION
CONDITION
Short to GND in wiring harness between BCM and door switches
POSSIBLE
CAUSE
• Short to GND in wiring harness between BCM terminal 5S and rear door switch (LH) terminal A
• Short to GND in wiring harness between BCM terminal 5T and rear door switch (RH) terminal A
• Rear door switch malfunction
• BCM malfunction
STEP
INSPECTION
ACTION
1
INSPECT REAR DOOR SWITCH
CONNECTOR
• Turn the ignition switch off.
• Disconnect the rear door switch connector.
• Inspect the rear door switch connector
terminals for poor connection (such as
damaged/pulled-out pins, and corrosion).
• Is there any malfunction?
Yes
Repair or replace the terminal, then go to Step 5.
No
Go to the next step.
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?
Yes
Repair or replace the terminal, then go to Step 5.
No
Go to the next step.
3
INSPECT SLIDING DOOR SWITCH SIGNAL
CIRCUIT FOR SHORT TO GND
• Inspect for continuity between BCM terminal
5S, 5T (wiring harness-side) body GND.
• Is there continuity?
Yes
Repair or replace the wiring harness for a possible open
circuit, then go to Step 5.
No
Go to the next step.
4
INSPECT REAR DOOR SWITCH
• Inspect the rear door switch.
(See 09-18-27 DOOR SWITCH
INSPECTION.)
• Is there any malfunction?
Yes
Replace the rear door switch, then go to the next step.
(See 09-18-26 DOOR SWITCH REMOVAL/
INSTALLATION)
No
Go to the next step.
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?
Yes
Replace the BCM.
(See 09-40-1 BODY CONTROL MODULE (BCM)
REMOVAL/INSTALLATION.)
No
DTC troubleshooting completed.
5S
5T
A
REAR DOOR SWITCH (LH)
BCM
A
REAR DOOR SWITCH (RH)
REAR DOOR SWITCH
HARNESS-SIDE CONNECTOR
BCM WIRING HARNESS-SIDE
CONNECTOR
A
5Q
5K
5B
5E
5H
5AC
5N
5Z
5T
5W
5G
5D
5A
5O
5AA
5U
5X
5Y
5V
5S
5P
5M
5AD
5AB
5I
5F
5J
5C
5L
5R
1871-1U-06B(09-02F).fm 14 ページ 2006年3月15日 水曜日 午前11時41分
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