B1808

SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: B1805/52-B1808/52: Short in Front Passenger Side Squib Circuit
B1808/52 - Short to B+ in Front Passenger Side Squib Circuit

DESCRIPTION

The front passenger side squib circuit consists of the center airbag sensor assembly and the front passenger airbag assembly.

The circuit signals the SRS to deploy when deployment conditions are met.

These DTCs are recorded when a malfunction is detected in the front passenger side squib circuit.

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT
* Perform the simulation method by selecting "check mode" (signal check) with the Techstream Check Mode Procedure.
* After selecting CHECK MODE (signal check), perform the simulation method by wiggling each connector of the airbag system or driving the vehicle on a city or rough road Diagnosis System.

PROCEDURE

1. CHECK CONNECTOR (FRONT PASSENGER AIRBAG - INSTRUMENT PANEL WIRE ASSEMBLY)

(a) Turn the ignition switch off.

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

(c) Disconnect the connectors from the front passenger airbag assembly.

(d) Check the instrument panel wire assembly connector and terminals (on the front passenger airbag side) and the connector is properly connected to the front passenger airbag.

Result:

C -- CONNECT CONNECTOR PROPERLY

B -- REPLACE INSTRUMENT PANEL WIRE ASSEMBLY
A -- Continue to next step.

2. CHECK FRONT PASSENGER AIRBAG (FRONT PASSENGER SIDE SQUIB)

(a) Disconnect the connectors from the front passenger airbag assembly.

(b) Connect the white wire side of SST (resistance 2.1 Ohms) to connector E (orange connector).

CAUTION:
Never connect a tester to the front passenger airbag assembly (front passenger side squib) for measurement, as this may lead to a serious injury due to airbag deployment.

NOTICE:
* Do not forcibly insert the SST into the terminals of the connector when connecting.
* Insert the SST straight into the terminals of the connector.

SST : 09843-18061

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

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

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

(f) Turn the ignition switch off.

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

(h) Check the DTCs Reading and Clearing Diagnostic Trouble Codes.

OK:

DTC B1805/52, B1806/52, B1807/52 and B1808/52 are not output.

HINT
DTCs other than DTC B1805/52, B1806/52, B1807/52 and B1808/52 may be output at this time, but they are not related to this check.

NG -- CHECK CONNECTOR (INSTRUMENT PANEL WIRE ASSEMBLY - INSTRUMENT PANEL WIRE)

OK -- REPLACE FRONT PASSENGER AIRBAG ASSEMBLY Removal

3. CHECK CONNECTOR (INSTRUMENT PANEL WIRE ASSEMBLY - INSTRUMENT PANEL WIRE)

(a) Turn the ignition switch off.

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

(c) Disconnect the SST from connector E.

(d) Check the instrument panel wire assembly connector and terminals (on the instrument panel wire side) and check that the connector is properly connected to the instrument panel wire.

Result:

C -- CONNECT CONNECTOR PROPERLY

B -- REPLACE INSTRUMENT PANEL WIRE ASSEMBLY
A -- Continue to next step.

4. CHECK FRONT PASSENGER SIDE SQUIB CIRCUIT

(a) Disconnect the connector from the center airbag sensor assembly.

(b) Check for short to B+ in the circuit.

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

(2) Turn the ignition switch to ON.

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

Standard Voltage:

(c) Check for open in the circuit.

(1) Turn the ignition switch off.

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

(3) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

(d) Check for short to ground in the circuit.

(1) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

(e) Check for short in the circuit.

(1) Release the activation prevention mechanism built into connector B Diagnosis System.

(2) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

(3) Restore the released activation prevention mechanism of connector B to the original condition.

NG -- CHECK CONNECTOR (INSTRUMENT PANEL WIRE - CENTER AIRBAG SENSOR ASSEMBLY)
OK -- Continue to next step.

5. CHECK CENTER AIRBAG SENSOR ASSEMBLY

(a) Connect the instrument panel wire connector to the instrument panel wire assembly.

(b) Connect the connectors to the front passenger airbag assembly and the center airbag sensor assembly.

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

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

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

(f) Turn the ignition switch off.

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

(h) Check the DTCs Reading and Clearing Diagnostic Trouble Codes.

OK:

DTC B1805/52, B1806/52, B1807/52 and B1808/52 are not output.

HINT
DTCs other than DTC B1805/52, B1806/52, B1807/52 and B1808/52 may be output at this time, but they are not related to this check.

NG -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY Removal

OK -- USE SIMULATION METHOD TO CHECK Diagnosis System

6. CHECK CONNECTOR (INSTRUMENT PANEL WIRE - CENTER AIRBAG SENSOR ASSEMBLY)

(a) Disconnect the connector from the center airbag sensor assembly.

(b) Check the instrument panel wire connector and terminals (on the center airbag sensor assembly side) and check that the connector is properly connected to the center airbag sensor assembly.

Result:

C -- CONNECT CONNECTOR PROPERLY

B -- REPLACE INSTRUMENT PANEL WIRE
A -- Continue to next step.

7. CHECK INSTRUMENT PANEL WIRE

(a) Check for short to B+ in the circuit.

(b) Check for open in the circuit.

(1) Turn the ignition switch off.

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

(3) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

(c) Check for short to ground in the circuit.

(1) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

(d) Check for short in the circuit.

(1) Release the activation prevention mechanism built into connector B Diagnosis System.

(2) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

(3) Restore the released activation prevention mechanism of connector B to the original condition.

NG -- REPLACE INSTRUMENT PANEL WIRE

OK -- REPLACE INSTRUMENT PANEL WIRE ASSEMBLY