Passenger Airbag ON/OFF Indicator Circuit Malfunction - Airbag System
SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: B1660/43: Passenger Airbag ON/OFF Indicator Circuit Malfunction
DTC B1660/43 - Passenger Airbag ON/OFF Indicator Circuit Malfunction
DESCRIPTION
The passenger airbag ON/OFF indicator circuit consists of the center airbag sensor assembly and the clock assembly.
The passenger airbag ON/OFF indicator indicates the operation condition of the front passenger airbag assembly and the front seat side airbag assembly 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 power 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 Diagnosis System.
Result:
B -- CHECK CONNECTION OF CONNECTORS
A -- Continue to next step.
2. CHECK CONNECTION OF CONNECTORS
(a) Turn the power 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 assembly and the clock assembly.
OK:
The connectors are properly connected.
NG -- CONNECT CONNECTORS PROPERLY, THEN GO TO STEP 1
OK -- Continue to next step.
3. CHECK CONNECTORS
(a) Disconnect the connectors from the center airbag sensor assembly and the clock assembly.
(b) Check that the connectors (on the center airbag sensor assembly side and clock assembly side) are not damaged.
OK:
The connectors are not deformed or damaged.
NG -- REPAIR OR REPLACE WIRE HARNESS
OK -- Continue to next step.
4. CHECK PASSENGER AIRBAG ON/OFF INDICATOR
(a) Connect the connector to the clock assembly.
(b) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(c) Turn the power 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 PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (OPEN)
OK -- Continue to next step.
5. CHECK CENTER AIRBAG SENSOR ASSEMBLY
(a) Turn the power switch off.
(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) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(e) Turn the power switch on (IG), and wait for at least 60 seconds.
(f) Clear the DTCs stored in the memory DTC Check / Clear.
(g) Turn the power switch off.
(h) Turn the power switch on (IG), and wait for at least 60 seconds.
(i) Check for DTCs DTC Check / Clear.
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.
Result:
C -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
B -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
A -- USE SIMULATION METHOD TO CHECK
6. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (OPEN)
(a) Turn the power switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the connector from the clock assembly.
(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.
(e) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE WIRE HARNESS
OK -- Continue to next step.
7. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (SHORT)
(a) Disconnect the service wire from connector B.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE WIRE HARNESS
OK -- Continue to next step.
8. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (SHORT TO GROUND)
(a) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE WIRE HARNESS
OK -- Continue to next step.
9. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (SHORT TO B+)
(a) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(b) Turn the power switch on (IG).
(c) Measure the voltage according to the value(s) in the table below.
Standard voltage:
NG -- REPAIR OR REPLACE WIRE HARNESS
OK -- REPLACE CLOCK ASSEMBLY
10. CHECK CONNECTION OF CONNECTORS
(a) Turn the power 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 assembly and the clock assembly.
OK:
The connectors are properly connected.
NG -- CONNECT CONNECTORS PROPERLY
OK -- Continue to next step.
11. CHECK CONNECTORS
(a) Disconnect the connectors from the center airbag sensor assembly and the clock assembly.
(b) Check that the connectors (on the center airbag sensor assembly side and clock assembly side) are not damaged.
OK:
The connectors are not deformed or damaged.
NG -- REPAIR OR REPLACE WIRE HARNESS
OK -- Continue to next step.
12. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (OPEN)
(a) 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.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE WIRE HARNESS
OK -- Continue to next step.
13. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (SHORT)
(a) Disconnect the service wire from connector B.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE WIRE HARNESS
OK -- Continue to next step.
14. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (SHORT TO GROUND)
(a) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE WIRE HARNESS
OK -- Continue to next step.
15. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (SHORT TO B+)
(a) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(b) Turn the power switch on (IG).
(c) Measure the voltage according to the value(s) in the table below.
Standard voltage:
NG -- REPAIR OR REPLACE WIRE HARNESS
OK -- Continue to next step.
16. CHECK CLOCK ASSEMBLY (SOURCE VOLTAGE)
(a) Connect the connectors to the center airbag sensor assembly.
(b) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(c) Turn the power switch on (IG).
(d) Measure the voltage according to the value(s) in the table below.
Standard voltage:
NG -- REPAIR OR REPLACE WIRE HARNESS (CLOCK ASSEMBLY - BATTERY) OR BATTERY
OK -- Continue to next step.
17. CHECK PASSENGER AIRBAG ON / OFF INDICATOR
(a) Turn the power switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Connect the connector to the clock assembly.
(d) Disconnect the connectors from the center airbag sensor assembly.
(e) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(f) Turn the power switch on (IG).
(g) Check the indicator according to the conditions in the table below.
Result:
NG -- REPLACE CLOCK ASSEMBLY
OK -- Continue to next step.
18. CHECK CENTER AIRBAG SENSOR ASSEMBLY
(a) Turn the power 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 assembly.
(d) Connect the negative (-) terminal cable to the battery and wait for at least 2 seconds.
(e) Turn the power switch on (IG), and wait for at least 60 seconds.
(f) Clear the DTCs stored in the memory DTC Check / Clear.
(g) Turn the power switch off.
(h) Turn the power switch on (IG), and wait for at least 60 seconds.
(i) Check for DTCs DTC Check / Clear.
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.
Result:
C -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
B -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
A -- USE SIMULATION METHOD TO CHECK