B1632

SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: B1630/23, B1632/81, B1635/24, B1637/82:

B1637/82 - Lost Communication with Rear Airbag Sensor RH

DESCRIPTION

The rear airbag sensor consists of a safing sensor, diagnostic circuit, lateral deceleration sensor, etc.

If the center airbag sensor receives signals from the lateral deceleration sensor, it determines whether the SRS should be activated.

DTC B1630, B1632, B1635 or B1637 is stored when a malfunction is detected in the rear airbag sensor circuit.





WIRING DIAGRAM









INSPECTION PROCEDURE

NOTICE:
When disconnecting the cable from the negative (-) battery terminal while performing repairs, some systems need to be initialized after the cable is reconnected Repair Instruction - Initialization.

PROCEDURE

1. CHECK FOR DTC

(a) Turn the ignition switch to ON.

(b) Clear the DTCs stored in memory Reading and Clearing Diagnostic Trouble Codes.

(c) Turn the ignition switch off.

(d) Turn the ignition switch to ON, and wait for at least 60 seconds.

(e) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

Result





HINT
Codes other than DTC B1630, B1632, B1635 or B1637 may be output at this time, but they are not related to this check.

B -- CHECK REAR AIRBAG SENSOR LH

A -- USE SIMULATION METHOD TO CHECK Diagnosis System
C -- Continue to next step.

2. CHECK REAR AIRBAG SENSOR RH

(a) Turn the ignition switch off.





(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

(c) Interchange the rear airbag sensor LH with RH and connect the connectors to them.

(d) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

(e) Turn the ignition switch to ON, and wait for at least 60 seconds.

(f) Clear the DTCs stored in memory Reading and Clearing Diagnostic Trouble Codes.

(g) Turn the ignition switch off.

(h) Turn the ignition switch to ON, and wait for at least 90 seconds.

(i) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

Result





HINT
Codes other than DTC B1630, B1632, B1635 or B1637 may be output at this time, but they are not related to this check.

Text in Illustration





(j) Turn the ignition switch off.

(k) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

(l) Return the rear airbag sensor LH and RH to their original positions and connect the connectors to them.

B -- REPLACE REAR AIRBAG SENSOR RH Removal

A -- USE SIMULATION METHOD TO CHECK Diagnosis System

C -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY Removal

3. CHECK REAR AIRBAG SENSOR LH

(a) Turn the ignition switch off.





(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

(c) Interchange the rear airbag sensor LH with RH and connect the connectors to them.

(d) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

(e) Turn the ignition switch to ON, and wait for at least 60 seconds.

(f) Clear the DTCs stored in memory Reading and Clearing Diagnostic Trouble Codes.

(g) Turn the ignition switch off.

(h) Turn the ignition switch to ON, and wait for at least 90 seconds.

(i) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

Result





HINT
Codes other than DTC B1630, B1632, B1635 or B1637 may be output at this time, but they are not related to this check.

Text in Illustration





(j) Turn the ignition switch off.

(k) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

(l) Return the rear airbag sensor LH and RH to their original positions and connect the connectors to them.

B -- REPLACE REAR AIRBAG SENSOR LH Removal

A -- USE SIMULATION METHOD TO CHECK Diagnosis System

C -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY Removal