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Home >> Lexus >> 2010 >> GS 350 RWD V6-3.5L (2GR-FSE) >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> B Code Charts >> B1660

B1660





SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: B1660/43: Passenger Airbag ON/OFF Indicator Circuit Malfunction
B1660/43 - Passenger Airbag ON/OFF Indicator Circuit Malfunction

DESCRIPTION

The passenger airbag ON/OFF indicator circuit consists of the center airbag sensor and the passenger airbag ON/OFF indicator.

The passenger airbag ON/OFF indicator indicates the operation condition of the front passenger airbag, front passenger side knee airbag, front seat side airbag RH and front seat outer belt RH.

DTC B1660/43 is recorded when a malfunction is detected in the passenger airbag ON/OFF indicator circuit.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CONDITION





(a) Turn the engine switch on (IG).

(b) Check the passenger airbag ON/OFF indicator operation.

HINT
Refer to the normal condition of the passenger airbag ON/OFF indicator Initial Inspection and Diagnostic Overview.

Result





B -- CHECK CONNECTION OF CONNECTORS
A -- Continue to next step.

2. CHECK CONNECTION OF CONNECTORS

(a) Turn the engine switch off.

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

(c) Check that the connectors are properly connected to the center airbag sensor and the multi-display.

OK:

The connectors are properly connected.

NG -- CONNECT CONNECTORS PROPERLY
OK -- Continue to next step.

3. CHECK CONNECTORS

(a) Disconnect the connectors from the center airbag sensor and the multi-display.

(b) Check that the connectors (on the center airbag sensor side and multi-display side) are not damaged.

OK:

The connectors are not deformed or damaged.

NG -- REPLACE INSTRUMENT PANEL WIRE
OK -- Continue to next step.

4. CHECK PASSENGER AIRBAG ON/OFF INDICATOR





(a) Connect the connector to the multi-display.

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

(c) Turn the engine switch on (IG).

(d) Check the passenger airbag ON/OFF indicator operation.

OK:

The passenger airbag ON/OFF indicator does not come on.

NG -- CHECK INSTRUMENT PANEL WIRE
OK -- Continue to next step.

5. CHECK CENTER AIRBAG SENSOR





(a) Connect the connector to the center airbag sensor.

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

(c) Turn the engine switch on (IG), and wait for at least 60 seconds.

(d) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(e) Turn the engine switch off.

(f) Turn the engine switch on (IG), and wait for at least 60 seconds.

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

OK:

DTC B1660/43 is not output.

HINT
Codes other than DTC B1660/43 may be output at this time, but they are not related to this check.

NG -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY

OK -- USE SIMULATION METHOD TO CHECK Initial Inspection and Diagnostic Overview

6. CHECK INSTRUMENT PANEL WIRE





(a) Turn the engine switch off.

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

(c) Disconnect the connectors from the multi-display.

(d) Using a service wire, connect terminals 23 (PAON) and 17 (P-AB) of connector B.

NOTICE:
Do not forcibly insert a service wire into the terminals of the connector when connecting the wire.

(e) Measure the resistance of the wire harness side connector.

Standard resistance:





(f) Disconnect the service wire from connector B.

(g) Measure the resistance of the wire harness side connector.

Standard resistance:





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

(i) Turn the engine switch on (IG).

(j) Measure the voltage of the wire harness side connectors.

Standard voltage:





OK -- REPLACE MULTI-DISPLAY ASSEMBLY

NG -- REPLACE INSTRUMENT PANEL WIRE

7. CHECK CONNECTION OF CONNECTORS

(a) Turn the engine switch off.

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

(c) Check that the connectors are properly connected to the center airbag sensor and the multi-display.

OK:

The connectors are properly connected.

NG -- CONNECT CONNECTORS PROPERLY
OK -- Continue to next step.

8. CHECK CONNECTORS

(a) Disconnect the connectors from the center airbag sensor and the multi-display.

(b) Check that the connectors (on the center airbag sensor side and multi-display side) are not damaged.

OK:

The connectors are not deformed or damaged.

NG -- REPLACE INSTRUMENT PANEL WIRE
OK -- Continue to next step.

9. CHECK INSTRUMENT PANEL WIRE





(a) Turn the engine switch off.

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

(c) Disconnect the connectors from the multi-display.

(d) Using a service wire, connect terminals 23 (PAON) and 17 (P-AB) of connector B.

NOTICE:
Do not forcibly insert a service wire into the terminals of the connector when connecting the wire.

(e) Measure the resistance of the wire harness side connectors.

Standard resistance:





(f) Disconnect the service wire from connector B.

(g) Measure the resistance of the wire harness side connectors.

Standard resistance:





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

(i) Turn the engine switch on (IG).

(j) Measure the voltage of the wire harness side connectors.

Standard voltage:





NG -- REPLACE INSTRUMENT PANEL WIRE
OK -- Continue to next step.

10. CHECK PASSENGER AIRBAG ON/OFF INDICATOR (SOURCE VOLTAGE)





(a) Connect the connectors to the center airbag sensor.

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

(c) Turn the engine switch on (IG).

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

Standard voltage:





NG -- REPLACE HARNESS AND CONNECTOR (PASSENGER AIRBAG ON/OFF INDICATOR - BATTERY) OR BATTERY
OK -- Continue to next step.

11. CHECK PASSENGER AIRBAG ON/OFF INDICATOR





(a) Turn the engine switch off.

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

(c) Connect the connector to the multi-display.

(d) Disconnect the connectors from the center airbag sensor.

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

(f) Turn the engine switch on (IG).

(g) Check the indicator according to the value(s) in the table below.

Result:





NG -- REPLACE MULTI-DISPLAY ASSEMBLY
OK -- Continue to next step.

12. CHECK CENTER AIRBAG SENSOR





(a) Turn the engine switch off.

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

(c) Connect the connectors to the center airbag sensor.

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

(e) Turn the engine switch on (IG), and wait for at least 60 seconds.

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

(g) Turn the engine switch off.

(h) Turn the engine switch on (IG), and wait for at least 60 seconds.

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

OK:

DTC B1660/43 is not output.

HINT
Codes other than DTC B1660/43 may be output at this time, but they are not related to this check.

NG -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY

OK -- USE SIMULATION METHOD TO CHECK Initial Inspection and Diagnostic Overview
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