DTC 29

SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: B1628/29: Roll Over Cut Off Indicator Malfunction

DTC B1628/29 - Roll Over Cut Off Indicator Malfunction

DESCRIPTION

The RSCA OFF switch is a mechanism that operates both right and left side of the curtain shield airbag assembly and the front seat outer belt assembly when the center airbag sensor assembly detects a roll-over.
The RSCA OFF indicator is installed in the combination meter assembly.
If the RSCA OFF switch is operated, the indicator comes on to inform the driver that the roll-over detection system is not working.
The initial setting of the roll-over detection system is on. It automatically operates every time the ignition switch is turned on.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK RSCA OFF INDICATOR CONDITION
(a) Turn the ignition switch to the ON position, and push the RSCA OFF switch for 2 seconds.
(b) Check the RSCA OFF indicator condition according to the table below.
Result:

B -- CHECK RSCA OFF INDICATOR OPERATION
A -- Continue to next step.
2. CHECK COMBINATION METER ASSEMBLY (SOURCE VOLTAGE)

(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Remove the combination meter assembly Removal.
(d) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(e) Turn the ignition switch to the ON position.
(f) Measure the voltage according to the value(s) in the table below.
Standard voltage:

NG -- GO TO METER / GAUGE SYSTEM
OK -- Continue to next step.
3. CHECK INSTRUMENT PANEL WIRE (CENTER AIRBAG SENSOR ASSEMBLY - COMBINATION METER ASSEMBLY)

(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the connector from the center airbag sensor assembly.
(d) Measure the resistance according to the value(s) in the table below.
Standard resistance:

NG -- REPAIR OR REPLACE INSTRUMENT PANEL WIRE
OK -- Continue to next step.
4. CHECK INSTRUMENT PANEL WIRE (SHORT TO B+)

(a) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(b) Turn the ignition switch to the ON position.
(c) Measure the voltage according to the value(s) in the table below.
Standard voltage:

NG -- REPAIR OR REPLACE INSTRUMENT PANEL WIRE
OK -- Continue to next step.
5. CHECK CENTER AIRBAG SENSOR ASSEMBLY

(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Connect the connector to the center airbag sensor assembly.
(d) Install the combination meter assembly Installation.
(e) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(f) Turn the ignition switch to the ON position, and wait for at least 60 seconds.
(g) Clear the DTCs stored in memory DTC Check / Clear.
(h) Turn the ignition switch to the LOCK position.
(i) Turn the ignition switch to the ON position, and wait for at least 60 seconds.
(j) Check the DTCs DTC Check / Clear.
OK:
DTC B1628/29 is not output.
HINT: Codes other than code B1628/29 may be output at this time, but they are not related to this check.
If the DTC B1628/29 is output after the center airbag sensor assembly is replaced, there may be trouble in the combination meter assembly (RSCA OFF indicator).
If RSCA OFF indicator remains off when DTC B1628/29 is output, there may be trouble in the combination meter assembly (RSCA OFF indicator).

NG -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
OK -- USE SIMULATION METHOD TO CHECK
6. CHECK RSCA OFF INDICATOR OPERATION
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the connector from the center airbag sensor assembly.
(d) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(e) Turn the ignition switch to the ON position.
(f) Check the RSCA OFF indicator condition.
OK:
The RSCA OFF indicator does not come on.
OK -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
NG -- Continue to next step.
7. CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND)

NG -- REPAIR OR REPLACE INSTRUMENT PANEL WIRE
OK -- REPLACE COMBINATION METER ASSEMBLY