Toyota RAV4 manuals

Toyota Sienna Service Manual: Short to GND in Front Pretensioner Squib LH Circuit

DTC B0137/71 Short to GND in Front Pretensioner Squib LH Circuit

DESCRIPTION

The front pretensioner squib LH circuit consists of the center airbag sensor assembly and the front seat outer belt assembly LH.

This circuit instructs the SRS to deploy when deployment conditions are met.

DTC B0137/71 is recorded when a short to ground is detected in the front pretensioner squib LH circuit.

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT:

1 CHECK FRONT SEAT OUTER BELT ASSEMBLY LH (FRONT PRETENSIONER SQUIB LH)

CHECK FRONT SEAT OUTER BELT ASSEMBLY LH

  1. Turn the ignition switch to the LOCK position.
  2.  Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
  3.  Disconnect the connectors from the front seat outer belt assembly LH.
  4.  Connect the white wire side of SST (resistance 2.1 Ω) to the floor wire.

CAUTION: Never connect a tester to the front seat outer belt assembly LH (front pretensioner squib LH) 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 09843-18060

  1.  Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
  2.  Turn the ignition switch to the ON position, and wait for at least 60 seconds.
  3.  Clear the DTCs stored in memory.
  4.  Turn the ignition switch to the LOCK position.
  5.  Turn the ignition switch to the ON position, and wait for at least 60 seconds.
  6.  Check the DTCs.

OK: DTC B0137/71 is not output.

HINT: Codes other than DTC B0137/71 may be output at this time, but they are not related to this check.

REPLACE FRONT SEAT OUTER BELT ASSEMBLY LH

2 FLOOR WIRE (FRONT PRETENSIONER SQUIB LH CIRCUIT)

FLOOR WIRE

  1. Turn the ignition switch to the LOCK position.
  2.  Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
  3.  Disconnect the SST (resistance 2.1 Ω) from the floor wire.
  4. Disconnect the connector from the center airbag sensor assembly.
  5.  Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

3 CHECK CENTER AIRBAG SENSOR ASSEMBLY

CHECK CENTER AIRBAG SENSOR ASSEMBLY

  1. Connect the connectors to the front seat outer belt assembly LH and the center airbag sensor assembly.
  2.  Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
  3.  Turn the ignition switch to the ON position, and wait for at least 60 seconds.
  4.  Clear the DTCs stored in memory.
  5.  Turn the ignition switch to the LOCK position.
  6.  Turn the ignition switch to the ON position, and wait for at least 60 seconds.
  7.  Check the DTCs.

OK: DTC B0137/71 is not output.

HINT: Codes other than DTC B0137/71 may be output at this time, but they are not related to this check.

USE SIMULATION METHOD TO CHECK

Open in Front Pretensioner Squib LH Circuit
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Short to B+ in Front Pretensioner Squib LH Circuit
DTC B0138/72 Short to B+ in Front Pretensioner Squib LH Circuit DESCRIPTION The front pretensioner squib LH circuit consists of the center airbag sensor assembly and the front seat outer belt ass ...

Other materials:

Installation
1. INSTALL TIRE PRESSURE WARNING RECEIVER ASSEMBLY (a) Connect the connector. (b) Install the tire pressure warning receiver assembly with the bolt. Torque: 5.0 N*m (51 kgf*cm, 44 in.*lbf) 2. INSTALL ROOF HEADLINING ASSEMBLY HINT: Refer to the instructions for INSTALLATION of the ROOF ...

For vehicles equipped with vehicle stability control (vsc) system
(a) Notices when using drum tester Notices when using drum tester. (1) When using a drum tester, be sure to start the engine with the ignition switch OFF, and connect SST to the terminals TS and CG of the DLC3 before the measurement in order to cancel the VSC operation. SST 09843-18040 ...

Inspection
1. INSPECT PACK CLEARANCE OF FORWARD CLUTCH (a) Install the forward clutch on the oil pump. NOTICE: Be careful not to damage the oil seal ring of oil pump. b) Using a dial indicator, measure the forward clutch pack clearance while applying and releasing compressed air (392 kPa, 4.0 kgf/cm ...

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