Driver / Passenger Pretensioner Initiator Circuit Resistance Low
DTC B1052 / B1056: Driver / Passenger Pretensioner Initiator Circuit Resistance Low
Wiring Diagram
Refer to Driver / Passenger Pretensioner Initiator Circuit Resistance High DTC B1051 / B1055: Driver / Passenger Pretensioner Initiator Circuit Resistance High:Except Advanced Air Bag.
DTC Will be 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 2: Check if malfunction is in seat belt pretensioner.
Step 3: Check seat belt pretensioner initiator circuit. (Between "L29" and "L12" or "L29" and "L36")
Step 4: Check seat belt pretensioner initiator circuit. (Between "G55" and "G47", "L12" and "L33" or "L36" and "L33")
DTC Troubleshooting
1.
Was "Air Bag Diagnostic System Check" performed?
YES -
Go to Step 2.
NO -
Go to Air Bag Diagnostic System Check Air Bag Diagnostic System Check:Except Advanced Air Bag.
2. With ignition switch OFF, remove center pillar lower trim of driver or passenger side and disconnect seat belt pretensioner connector "L12" or "L36" (1).
Check proper connection to seat belt pretensioner at terminals in "L12" or "L36" connector.
If OK, then connect special tools (A), (B) and (C) to "L12" or "L36" connector disconnected in Step 1).
Special Tool
(A): 09932-76010
(B): 09932-75010
(C): 09932-78310
Check SDM DTC.
With ignition switch ON, is DTC B1052 or B1056 still indicated?
YES -
Without side-air bag and curtain-air bag: go to Step 3.
With side-air bag and curtain-air bag: go to Step 4.
NO -
Turn ignition switch OFF. Replace seat belt pretensioner referring to Removal and Installation Front Seat Belt Removal and Installation.
3. With ignition switch OFF, disconnect "G55" connector located near the console box.
Check proper connection to applicable seat belt pretensioner at terminal in "G55" connector.
If OK, then connect special tools (B) and (D) to "G55" connector.
Special Tool
(B): 09932-75010
(D): 09932-77320
Check SDM DTC.
With ignition switch ON, is DTC B1052 or B1056 still indicated?
YES -
Go to Step 4.
NO -
DTC B1052: "GRN/ORN" circuit shorted to "GRN/YEL" circuit, "GRN/ORN" circuit or "GRN/YEL" circuit shorted to other circuit. (Between "L29" and "L12" connectors)
DTC B1056: "BLU/ORN" circuit shorted to "BLU/YEL" circuit, "BLU/ORN" circuit or "BLU/YEL" circuit shorted to other circuit. (Between "L29" and "L36" connectors)
4. With ignition switch OFF, disconnect SDM connector "G47" or "L33".
Check proper connection to SDM at terminals "G47-7" and "G47-8" or "L33-5" and "L33-6" (for DTC B1052) or terminals "G47-1" and "G47-2" or "L33-7" and "L33-8" (for DTC B1056).
If OK, release shorting bar in SDM connector inserting release tool (1) included in special tool (A).
Measure resistance between "G47-7" and "G47-8" (for DTC B1052) or "G47-1" and "G47-2" (for DTC B1056) with connected special tools (B) and (D) [A], or between "L33-5" and "L33-6" (for DTC B1052) or "L33-7" and "L33-8" (for DTC B1056) with connected special tools (A), (B) and (C) [B].
Special Tool
(A): 09932-76010
(B): 09932-75010
(C): 09932-78310
(D): 09932-77320
Is resistance 0.65 ohms or more?
YES -
Substitute a known-good SDM and recheck.
NO -
DTC B1052: "GRN/ORN" circuit shorted to "GRN/YEL" circuit, "GRN/ORN" circuit or "GRN/YEL" circuit shorted to other circuit. (Between "G55" and "G47" connectors or between "L12" and "L33" connectors)
DTC B1056: "BLU/ORN" circuit shorted to "BLU/YEL" circuit, "BLU/ORN" circuit or "BLU/YEL" circuit shorted to other circuit. (Between "G55" and "G47" connectors or between "L36" and "L33" connectors)
NOTE:
Upon completion of inspection and repair work, perform the following items.
- Reconnect all air bag system components and ensure all components are properly mounted.
- Clear DTCs referring to DTC Clearance DTC Clearance:Except Advanced Air Bag
, if any.
- Repeat Air Bag Diagnostic System Check Air Bag Diagnostic System Check:Except Advanced Air Bag
to confirm that the trouble has been corrected.