DTC B1801/51 OPEN IN D SQUIB CIRCUIT

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Lydia McBride
5 years ago
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1 DIGNOSTICS DTC B1801/51 OPEN IN D SQUIB CIRCUIT 05IXN01 CIRCUIT DESCRIPTION The D squib circuit consists of the airbag assy, the spiral cable subassy and the horn button assy. The circuit instructs the SRS to deploy when deployment conditions are met. DTC B1801 is recorded when an open circuit is detected in the D squib circuit. DTC No. DTC Detecting Condition Trouble rea B1801 WIRI DIGRM See page When the airbag assy receives an open signal in the D squib circuit for 2 seconds. D squib malfunction cable subassy malfunction assy malfunction Instrument panel wire cable subassy Horn button assy (D squib) assy 1630

2 DIGNOSTICS INSPECTION PROCEDURE CUTION: Be sure to perform the following procedures before troubleshooting to avoid unexpected airbag deployment. Turn the power switch off. (b) Disconnect the negative () terminal cable from the battery, and wait for at least 90 seconds. (c) Disconnect the connectors from the airbag assy. (d) Disconnect the connectors from the horn button assy. (e) Disconnect the connectors from the front passenger airbag assy. (f) Disconnect the connector from the front seat airbag assy LH. (g) Disconnect the connector from the front seat airbag assy RH. (h) Disconnect the connector from the curtain shield airbag assy LH. (i) Disconnect the connector from the curtain shield airbag assy RH. (j) Disconnect the connector from the front seat outer belt assy LH. (k) Disconnect the connector from the front seat outer belt assy RH. 1 CHECK D SQUIB CIRCUIT(IRBG SSY HORN BUTTON SSY) F E DC B D lways Below 1 Ω D H41475 H43070 Go to step

3 DIGNOSTICS 2 CHECK IR BG SSY H01002 C89252 F E DC D Service Wire H44387 Connect the connectors to the airbag assy. (b) Using a service wire, connect and D of connector E. NOTICE: Twist the end of the service wire in order to insert it into the connector. Do not forcibly insert the twisted service wire into the terminals of the connector when connecting. (c) Connect the negative () terminal cable to the battery, and wait for at least 2 seconds. (d) Turn the power switch on (IG), and wait for at least 60 seconds. (e) Clear the DTCs stored in memory (see page ). (f) Turn the power switch off. (g) Turn the power switch on (IG), and wait for at least 60 seconds. (h) Check the DTCs (see page ). : DTC B1801 is not output. Codes other than code B1801 may be output at this time, but they are not related to this check. REPLCE IR BG SSY (SEE PGE 6054) 1632

4 DIGNOSTICS CHECK HORN BUTTON SSY(D SQUIB) FE H01003 DC H44388 Turn the power switch off. (b) Disconnect the negative () terminal cable from the battery, and wait for at least 90 seconds. (c) Disconnect the service wire from connector E. (d) Connect the connectors to the horn button assy. (e) Connect the negative () terminal cable to the battery, and wait for at least 2 seconds. (f) Turn the power switch on (IG), and wait for at least 60 seconds. (g) Clear the DTCs stored in memory (see page ). (h) Turn the power switch off. (i) Turn the power switch on (IG), and wait for at least 60 seconds. (j) Check the DTCs (see page ). : DTC B1801 is not output. Codes other than code B1801 may be output at this time, but they are not related to this check. REPLCE HORN BUTTON SSY (SEE PGE 6020) USE SIMULTION METHOD TO CHECK (SEE PGE ) Perform the simulation method by selecting the check mode with the handheld tester (see page ). fter selecting the check mode, perform the simulation method by wiggling each connector of the airbag system or driving the vehicle on a city or rough road (see page ). 1633

5 DIGNOSTICS 4 CHECK INSTRUMENT PNEL WIRE Instrument Panel Wire F E D C B 22 (b) Disconnect the instrument panel wire connector from the spiral cable subassy. 221 () 222 (D) lways Below 1 Ω H41440 D H43066 REPIR OR REPLCE INSTRUMENT PNEL WIRE 5 CHECK SPIRL CBLE SUBSSY F E D C B D lways Below 1 Ω D H41479 H43071 REPLCE SPIRL CBLE SUBSSY (SEE PGE 6029) USE SIMULTION METHOD TO CHECK (SEE PGE 6029) Perform the simulation method by selecting the check mode with the handheld tester (see page ). fter selecting the check mode, perform the simulation method by wiggling each connector of the airbag system or driving the vehicle on a city or rough road (see page ). 1634

DTC B0103/12 SHORT IN D SQUIB CIRCUIT (TO B+)

051246 DIGNOSTICS DTC B0103/12 SHORT IN D SQUIB CIRCUIT (TO B+) 0525G17 CIRCUIT DSCRIPTION The D squib circuit consists of the airbag sensor assy center, the spiral cable subassy and the horn button assy.