DESCRIPTION The front airbag sensor RH circuit consists of the airbag ECU assembly and front airbag sensor RH. The front airbag sensor RH detects impacts to the vehicle and sends signals to the airbag ECU assembly to determine if the airbags and pretensioners should be deployed. These DTCs are stored when a malfunction is detected in the front airbag sensor RH circuit.
WIRING DIAGRAM  CAUTION / NOTICE / HINT NOTICE: After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work. Click here
PROCEDURE
(a) Turn the engine switch off. (b) Disconnect the cable from the negative (-) battery terminal. CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. (c) Check that the connectors are properly connected to the airbag ECU assembly and front airbag sensor RH. Also check that the connectors that link the engine room main wire and instrument panel wire are properly connected. OK: The connectors are properly connected.
(a) Disconnect the connectors from the airbag ECU assembly and front airbag sensor RH. Also disconnect the connectors that link the engine room main wire and instrument panel wire. (b) Check that the terminals of the connectors are not deformed or damaged. OK: The terminals are not deformed or damaged.
(b) Connect the cable to the negative (-) battery terminal. (c) Turn the engine switch on (IG). (d) Measure the voltage according to the value(s) in the table below. Standard Voltage:
(e) Turn the engine switch off. (f) Disconnect the cable from the negative (-) battery terminal. CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. (g) Using a service wire, connect terminals 29 (+SR) and 28 (-SR) of connector B. NOTICE: Do not forcibly insert the service wire into the terminals of the connector when connecting the wire. (h) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(i) Disconnect the service wire from connector B. (j) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(b) Interchange the front airbag sensor RH with LH and connect the connectors. (c) Connect the cable to the negative (-) battery terminal. (d) Turn the engine switch on (IG), and wait for at least 60 seconds. (e) Clear the DTCs stored in memory. Body Electrical > SRS Airbag > Clear DTCs(f) Turn the engine switch off. (g) Turn the engine switch on (IG), and wait for at least 60 seconds. (h) Check for DTCs. Body Electrical > SRS Airbag > Trouble CodesHINT: Codes other than DTCs B1612, B1613, B1617 and B1618 may be output at this time, but they are not related to this check.
(i) Turn the engine switch off. (j) Disconnect the cable from the negative (-) battery terminal. CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. (k) Return the front airbag sensor RH and LH to their original positions and connect the connectors.
(b) Connect the cable to the negative (-) battery terminal. (c) Turn the engine switch on (IG). (d) Measure the voltage according to the value(s) in the table below. Standard Voltage:
(e) Turn the engine switch off. (f) Disconnect the cable from the negative (-) battery terminal. CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. (g) Using a service wire, connect terminals 29 (+SR) and 28 (-SR) of connector B. NOTICE: Do not forcibly insert the service wire into the terminals of the connector when connecting the wire. (h) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(i) Disconnect the service wire from connector B. (j) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Sfi System: A/F (O2) Sensor Signal Biased/Stuck Lean Bank 1 Sensor 2 Circuit Current Above Threshold (P227019,P227118)
DESCRIPTION Refer to DTC P003612. Click here HINT: Although the DTC title say O2 sensor, these DTCs relate to the air fuel ratio sensor (sensor 2). DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note P227019 A/F (O2) Sensor Signal Biased/Stuck Lean Bank 1 Sensor 2 Circuit Cur ...
