8B
DTC B1042 / B1046: Driver / Passenger Pretensioner Initiator Circuit Resistance Low
DTC Will Set when
The resistance of driver or passenger seat belt pretensioner initiator circuit is below a specified value for specified time.
Flow Test Description
Step 1: Check whether malfunction is in seat belt pretensioner.
Step 2: Check seat belt pretensioner initiator circuit in seat belt pretensioner harness.
Step 2: Check seat belt pretensioner initiator circuit in air bag harness.
Troubleshooting
Step Action YES NO
1
1) With ignition switch OFF, remove quarter lower trim of applicable side.
2) Disconnect connector “Q04” or “Q06” connector from seat belt pretensioner.
3) Check proper connection to applicable seat belt pretensioner at terminals in “Q04” or “Q06” connector.
4) If OK, then connect special tools (A), (B) and (C) to “Q04” or “Q06” connector.
Special Tool
(A) : 09932–75010
(B) : 09932–75010
(A) : 09932–78310
With ignition switch ON, does DTC B1042 or B1046 still exist?
Go to Step 2.
Ignition switch OFF.
Replace seat belt pretensioner referring to Front Seat Belt with Pretensioner Removal and Installation .
2
1) With ignition switch OFF, disconnect special tools (A), (B) and (C) from “Q04” or “Q06” connector.
2) Disconnect connector “L31” or “L33” from air bag wire harness in floor harness.
3) Check proper connection to air bag wire harness at terminals in “L31” or “L33” connector.
4) If OK, then connect special tools (B) and (D) to “L31” or “L33” connector.
Special Tool
(A) : 09932–76010
(B) : 09932–75010
(C) : 09932–78310
(D) : 09932–78340
With ignition switch ON, does DTC B1042 or B1046 still exist?
Go to Step 3.
Repair short from “YEL” wire circuit to “YEL/RED” wire circuit or from “YEL” or “YEL/RED” wire circuit to other wire circuit.
3
1) With ignition switch OFF, disconnect SDM connector “G102”.
2) Check proper connection between “G102-11” and “G102-12” or “G102-6” and “G102-5”.
3) If OK, measure resistance with connected special tools (B) and (D).
Special Tool
(B) : 09932–75010
(D) : 09932–78340
a) DTC B1042: between “G102-11” and “G102-12” terminals.
Special Tool
(A) : 09932–76010
b) DTC B1046: between “G102-5” and “G102-6” terminals.
Special Tool
(A) : 09932–76010
Is resistance 1.4 Ω or more?
Substitute a known-good SDM and recheck.
DTC B1042:
Repair short from “PNK” wire circuit to “WHT” wire circuit, or from “PNK” or “WHT” wire circuit to other wire circuit.
DTC B1046:
Repair short from “BRN” wire circuit to “LT GRN” wire circuit, or from “BRN” or “LT GRN” wire circuit to other wire 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.