B1662
SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: B1662/45: Indicator Light Circuit Malfunction
DTC B1662/45 - Indicator Light Circuit Malfunction
DESCRIPTION
The indicator lamp circuit consists of the center airbag sensor assembly and the combination meter.
DTC B1662/45 is set when a malfunction is detected in the indicator light circuit.
WIRING DIAGRAM
INSPECTION PROCEDURE
CAUTION: In order to prevent unexpected airbag deployment, disconnect the following connectors before inspecting parts such as wire harnesses, if the application of tester probes to the center airbag sensor assembly connector is necessary.
(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 connectors from the center airbag sensor assembly.
(d) Disconnect the connectors from the steering pad.
(e) Disconnect the connector from the front passenger airbag assembly.
(f) Disconnect the connector from the front seat outer belt assembly LH.
(g) Disconnect the connector from the front seat outer belt assembly RH.
HINT: Skip steps (f) to (i) if side and curtain shield airbags are not fitted.
(h) Disconnect the connector from the front seat airbag assembly LH.
(i) Disconnect the connector from the front seat airbag assembly RH.
(j) Disconnect the connector from the curtain shield airbag assembly LH.
(k) Disconnect the connector from the curtain shield airbag assembly RH.
PROCEDURE
1. CHECK DTC
(a) Turn the ignition switch to the ON position.
(b) Clear any DTCs stored in the memory DTC Check / Clear.
(c) Turn the ignition switch to the LOCK position.
(d) Turn the ignition switch to the ON position and wait for at least 60 seconds.
(e) Check the DTCs DTC Check / Clear.
OK:
DTC B1662/45 is not output.
HINT: DTCs other than B1662/45 may be output at this time, but they are not related to this check.
OK -- OTHERS USE SIMULATION METHOD TO CHECK
NG -- Continue to next step.
2. CHECK CONNECTORS
(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) Check that the connectors are properly connected to the center airbag sensor assembly and the combination meter assembly.
OK:
The connectors are properly connected.
NG -- CONNECT CONNECTOR
OK -- Continue to next step.
3. CHECK CONNECTORS
(a) Check that the connectors (on the center airbag sensor assembly side and combination meter side) are not damaged Electronic Circuit Inspection Procedure.
OK:
The connectors are not deformed or damaged.
NG -- REPAIR OR REPLACE WIRE HARNESS
OK -- Continue to next step.
4. CHECK INSTRUMENT PANEL WIRE (FOR OPEN)
(a) Disconnect the connectors from the center airbag sensor assembly and the combination meter.
(b) Measure the resistance.
Standard resistance:
NG -- REPAIR OR REPLACE INSTRUMENT PANEL WIRE
OK -- Continue to next step.
5. CHECK INSTRUMENT PANEL WIRE (TO GROUND)
(a) Measure the resistance.
Standard resistance:
NG -- REPAIR OR REPLACE INSTRUMENT PANEL WIRE
OK -- Continue to next step.
6. CHECK INSTRUMENT PANEL WIRE (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.
Standard voltage:
NG -- REPAIR OR REPLACE INSTRUMENT PANEL WIRE
OK -- Continue to next step.
7. 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) Replace the center airbag sensor assembly Removal.
HINT: Perform the inspection using parts from a normal vehicle when possible.
(d) Connect the connectors to the center airbag sensor assembly and the combination meter assembly.
(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 any DTCs stored in the 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 for DTCs DTC Check / Clear.
OK:
DTC B1662/45 is not output.
HINT: DTCs other than B1662/45 may be output at this time, but they are not related to this check.
NG -- INSPECT COMBINATION METER ASSEMBLY
OK -- END