Toyota 4Runner: Diagnostic Trouble Code Chart

Toyota 4Runner Service Manual / Vehicle Interior / Supplemental Restraint Systems / Airbag System / Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

If a trouble code is output during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the "See page" below.
When the SRS warning light remains on and the DTC output is the normal system code, a voltage source drop is likely to occur. This malfunction is not stored in memory by the airbag sensor assembly.
If the power source voltage returns to normal, the SRS warning light automatically goes off.
When 2 or more codes are output, the code with the lower number is output first.
If a code not listed in the chart is output, the airbag sensor assembly may have a malfunction.
If a DTC is output indicating a short to ground, short to B+ or open in an airbag squib circuit, other DTCs may not be output. First replace or repair the malfunctioning area indicated by the current DTC, and then check for DTCs again to output the other DTCs.
Mark in the check mode column:
*1: DTC is not output in check mode.

*2: DTC is output in check mode.

Airbag System

DTC Code	Detection Item	Check Mode
B1000/31	Center Airbag Sensor Assembly Malfunction	*1
B1610/13	Front Airbag Sensor RH Malfunction	*1
B1612/83	Lost Communication with Front Airbag Sensor RH	*1
B1613/83	Front Airbag Sensor RH Initialization Incomplete	*1
B1615/14	Front Airbag Sensor LH Malfunction	*1
B1617/84	Lost Communication with Front Airbag Sensor LH	*1
B1618/84	Front Airbag Sensor LH Initialization Incomplete	*1
B161A/8A	Lost Communication with Front Satellite Sensor Bus	*1
B1630/23	Rear Airbag Sensor RH Circuit Malfunction	*1
B1632/81	Lost Communication with Rear Airbag Sensor RH	*1
B1633/81	Rear Airbag Sensor Assembly RH Initialization Incomplete	*1
B1635/24	Rear Airbag Sensor LH Circuit Malfunction	*1
B1637/82	Lost Communication with Rear Airbag Sensor LH	*1
B1638/82	Rear Airbag Sensor Assembly LH Initialization Incomplete	*1
B1642/81	Lost Communication with Side Satellite Sensor Bus RH	*1
B1647/82	Lost Communication with Side Satellite Sensor Bus LH	*1
B1650/32	Occupant Classification System Malfunction	*1
B1656/38	Seat Belt Buckle Switch LH Circuit Malfunction	*1
B1660/43	Passenger Airbag ON/OFF Indicator Circuit Malfunction	*1
B1675/82	Rear Floor Airbag Sensor Malfunction	*1
B1676/85	Lost Communication with Rear Floor Airbag Sensor RH	*1
B1677/85	Rear Floor Airbag Sensor RH Initialization Incomplete	*1
B1690/15	Door Side Airbag Sensor RH Malfunction	*1
B1692/81	Lost Communication with Door Side Airbag Sensor RH	*1
B1693/81	Door Side Airbag Sensor RH Initialization Incomplete	*1
B1695/16	Door Side Airbag Sensor LH Malfunction	*1
B1697/82	Lost Communication with Door Side Airbag Sensor LH	*1
B1698/82	Door Side Airbag Sensor LH Initialization Incomplete	*1
B1800/51	Short in Driver Side Squib Circuit	*2
B1801/51	Open in Driver Side Squib Circuit	*2
B1802/51	Short to GND in Driver Side Squib Circuit	*2
B1803/51	Short to B+ in Driver Side Squib Circuit	*2
B1805/52	Short in Front Passenger Side Squib Circuit	*2
B1806/52	Open in Front Passenger Side Squib Circuit	*2
B1807/52	Short to GND in Front Passenger Side Squib Circuit	*2
B1808/52	Short to B+ in Front Passenger Side Squib Circuit	*2
B1810/53	Short in Driver Side Squib 2nd Step Circuit	*2
B1811/53	Open in Driver Side Squib 2nd Step Circuit	*2
B1812/53	Short to GND in Driver Side Squib 2nd Step Circuit	*2
B1813/53	Short to B+ in Driver Side Squib 2nd Step Circuit	*2
B1815/54	Short in Front Passenger Side Squib 2nd Step Circuit	*2
B1816/54	Open in Front Passenger Side Squib 2nd Step Circuit	*2
B1817/54	Short to GND in Front Passenger Side Squib 2nd Step Circuit	*2
B1818/54	Short to B+ in Front Passenger Side Squib 2nd Step Circuit	*2
B1820/55	Short in Side Squib RH Circuit	*2
B1821/55	Open in Side Squib RH Circuit	*2
B1822/55	Short to GND in Side Squib RH Circuit	*2
B1823/55	Short to B+ in Side Squib RH Circuit	*2
B1825/56	Short in Side Squib LH Circuit	*2
B1826/56	Open in Side Squib LH Circuit	*2
B1827/56	Short to GND in Side Squib LH Circuit	*2
B1828/56	Short to B+ in Side Squib LH Circuit	*2
B1830/57	Short in Curtain Shield Squib RH Circuit	*2
B1831/57	Open in Curtain Shield Squib RH Circuit	*2
B1832/57	Short to GND in Curtain Shield Squib RH Circuit	*2
B1833/57	Short to B+ in Curtain Shield Squib RH Circuit	*2
B1835/58	Short in Curtain Shield Squib LH Circuit	*2
B1836/58	Open in Curtain Shield Squib LH Circuit	*2
B1837/58	Short to GND in Curtain Shield Squib LH Circuit	*2
B1838/58	Short to B+ in Curtain Shield Squib LH Circuit	*2
B1860/64	Short in Driver Side Knee Airbag Squib Circuit	*2
B1861/64	Open in Driver Side Knee Airbag Squib Circuit	*2
B1862/64	Short to GND in Driver Side Knee Airbag Squib Circuit	*2
B1863/64	Short to B+ in Driver Side Knee Airbag Squib Circuit	*2
B1865/65	Short in Front Passenger Side Knee Airbag Squib Circuit	*2
B1866/65	Open in Front Passenger Side Knee Airbag Squib Circuit	*2
B1867/65	Short to GND in Front Passenger Side Knee Airbag Squib Circuit	*2
B1868/65	Short to B+ in Front Passenger Side Knee Airbag Squib Circuit	*2
B1900/73	Short in Front Pretensioner Squib RH Circuit	*2
B1901/73	Open in Front Pretensioner Squib RH Circuit	*2
B1902/73	Short to GND in Front Pretensioner Squib RH Circuit	*2
B1903/73	Short to B+ in Front Pretensioner Squib RH Circuit	*2
B1905/74	Short in Front Pretensioner Squib LH Circuit	*2
B1906/74	Open in Front Pretensioner Squib LH Circuit	*2
B1907/74	Short to GND in Front Pretensioner Squib LH Circuit	*2
B1908/74	Short to B+ in Front Pretensioner Squib LH Circuit	*2

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