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DTC B1031 – Power Source Voltage High
DTC B1032 – Power Source Voltage Low
WIRING DIAGRAM
1
2
1. From main fuse
2. Ignition switch
CAUTION:
• Be sure to perform "Air Bag Diagnostic System Check" before starting diagnosis according to flow
table.
• When measurement of resistance or voltage is required in this table, use a tester along with a cor-
rect terminal adapter from special tool (Connector test adapter kit).
• When a check for proper connection is required, refer to "Intermittents and Poor Connections" in
this section.
• If there is open circuit in the air bag wire harness, connector or terminal is found damaged, replace
the wire harness, connector and terminal as an assembly.
DTC WILL BE SET WHEN
DTC B1031:
The power source voltage to SDM is above specified value for specified time.
DTC B1032:
The power source voltage is below an approx. 8V for specified time.
TABLE TEST DESCRIPTION
DTC B1031:
STEP 1: Check if voltage applied to SDM is within normal range.
STEP 2: Check if DTC B1031 still exists.
DTC B1032:
STEP 1: Check if voltage on battery is within normal range.
STEP 2: Check if voltage applied to SDM is within normal range.
STEP 3: Check if voltage applied to "G75" connector is within normal range.
STEP 4: Check if DTC B1032 still exists.
3
BLK/YEL
3. "AIR BAG" fuse
4. SDM
"G75"
"L63"
RED
RED
BLK
5
5. Ground for air bag system
AIR BAG SYSTEM 10B-33
"L21"
4
L21-32
IG
L21-31
GND
+30V+5V
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