8B
DTC B1035: Forward Sensor Circuit Open or Short to Power Circuit (K9K Model)
Wiring Diagram
1. From main fuse 2. SDM 3. Ground for air bag system
CAUTION:
• Be sure to perform Air Bag Diagnostic System Check before starting diagnosis according to the flow.
• When measurement of resistance or voltage is required in this flow, use a specified digital multimeter (Refer to Special Tool .) along with a correct terminal adapter from special tool (Connector test adapter kit).
• When a check for proper connection is required, refer to Inspection of Intermittents and Poor Connections .
• 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 Set when
The voltage measured at forward sensor circuit (terminal G102-1) is above a specified value for specified time.
Flow Test Description
Step 1: Check whether malfunction is in forward sensor.
Step 2: Check if forward sensor circuit is open.
Step 3: Check if forward sensor circuit is shorted to power circuit.
Troubleshooting
Step Action YES NO
1
1) Ignition switch OFF.
2) Disconnect driver air bag (inflator) module connector, passenger air bag (inflator) module connector, driver pretensioner module connector, and passenger pretensioner module connector.
3) Disconnect forward sensor connector.
4) Check proper connection to forward sensor connector at “RED” and “BLU” terminals.
5) If OK, then measure resistance between terminals of forward sensor.
Is resistance 738 – 902 Ω?
Go to Step 2.
Replace forward sensor.
2
1) Reconnect forward sensor connector.
2) Disconnect SDM connector “G102”.
3) Check proper connection to SDM connector at terminals “G102-1” and “G102-13”.
4) If OK, then measure resistance between terminals “G102-1” and “G102-13”.
Special Tool
(A) : 09932–76010
Is resistance 738 – 902 Ω?
Go to Step 3.
Repair high resistance or open in “RED” and “BLU” wire circuit (between forward sensor and SDM).
3
1) Disconnect forward sensor connector.
2) Measure voltage from “G102-1” terminal to body ground and “G102-13” terminal to body ground.
Special Tool
(A) : 09932–76010
With ignition switch ON, are they 1 V or less?
Substitute a known-good SDM and recheck.
Repair short from “RED” or “BLU” wire circuit (between forward sensor and SDM) to power circuit.
NOTE:
Upon completion of inspection and repair work, perform the following items.
• Reconnect all air bag system components, ensure all components are properly mounted.
• Clear DTCs (Refer to DTC Clearance .), if any.
• Repeat Air Bag Diagnostic System Check to confirm that the trouble has been corrected.