Dtc B1884/B1890 - Mazda CX-7 2007 Workshop Manual

DTC B1884, B1890
B1884 Passenger air bag deactivation (PAD) indicator circuit open or short to body ground
DTC
B1890 Passenger air bag deactivation (PAD) indicator circuit short to power supply
Warning
• Detection conditions are for understanding the DTC outline before performing an inspection.
Performing an inspection according to only the detection conditions may cause injury due to
DETECTION
an operating error, or damage the system. When performing an inspection, always follow the
CONDITION
inspection procedure.
• Malfunction in PAD indicator circuit
• Open or short circuit in wiring harness between information display and SAS control module
• Open circuit in wiring harness between battery and information display
POSSIBLE
• information display malfunction
CAUSE
• SAS control module malfunction
SAS CONTROL MODULE WIRING
HARNESS-SIDE CONNECTOR
1V
1S
1W
1T
1X 1U
Diagnostic procedure
STEP
1 INSPECT OPERATION OF PAD INDICATOR
• Turn the ignition switch to the ON position.
• Does the PAD indicator illuminate?
2 INSPECT FUSE
• Remove the MATER 10 A fuse.
• Is the fuse normal?
3 INSPECT BATTERY
• Measure the battery positive voltage.
• Is the voltage 9 V16 V?
4 INSPECT WIRING HARNESS BETWEEN
BATTERY AND PAD INDICATOR
• Turn the ignition switch to the ON position.
• Measure the information display connector
terminal E voltage.
• Is the voltage 9 V or more?
08-02–22
ON-BOARD DIAGNOSTIC
1D
1P 1M 1J 1G 1A
1E 1B
1Q 1H
1I
1R
1F 1C
INSPECTION
INFORMATION DISPLAY
HARNESS-SIDE CONNECTOR
I E
*
*
L J H
*
Yes Go to the next step.
No Go to Step 5.
Yes Install the fuse, then go to the next step.
No Replace the fuse.
Yes Go to the next step.
No Battery is malfunctioning
Inspect the charge/discharge system.
Yes Go to the next step.
No Repair the wiring harness between the battery and
information display.
id080200801600
C A
D B
ACTION