B2036

PRE-COLLISION: PRE-COLLISION SYSTEM: B2036: Power Supply Relay Malfunction Open
B2036 - Power Supply Relay Malfunction Open

DESCRIPTION

If the seat belt control ECU judges that there is a malfunction in its internal circuit as a result of self-diagnosis, or if the power source voltage (+B) is not input to the seat belt control ECU, this DTC will be stored.





INSPECTION PROCEDURE

NOTICE:
* Inspect the fuses for circuits related to this system before performing the following inspection procedure.
* After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work Service Precautions.

PROCEDURE

1. INSPECT SEAT BELT CONTROL ECU (+B TERMINAL VOLTAGE)

CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

(a) Disconnect the cable from the negative (-) battery terminal.





(b) Disconnect the seat belt control ECU connector.

(c) Connect the cable to the negative (-) battery terminal.

(d) Measure the voltage according to the value(s) in the table below.

Standard Voltage:





Text in Illustration





(e) Disconnect the cable from the negative (-) battery terminal.

(f) Reconnect seat belt control ECU connector.

(g) Connect the cable to the negative (-) battery terminal.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (+B CIRCUIT)

OK -- REPLACE SEAT BELT CONTROL ECU Removal