Toyota Tacoma manuals

Toyota Corolla Repair Manual: Inspection procedure

1 Check front airbag sensor (lh) circuit (to b+)(airbag sensor assy center airbag sensor front lh)

  1. Disconnect the negative () terminal cable from the battery, and wait at least for 90 seconds.
  2.  disconnect the connectors between the airbag sensor assy center and the airbag sensor front lh.
  3.  connect the negative () terminal cable to the battery, and wait at least for 2 seconds.
  4. ) turn the ignition switch to on.
  5.  for the connector (on the airbag sensor assy center side) between the airbag sensor front lh and the airbag sensor assy center, measure the voltage between body ground and each of +sl and sl.

    Ok: voltage: below 1 v

2 Check front airbag sensor(lh) circuit(to ground)(airbag sensor

2 Check front airbag sensor(lh) circuit(to ground)(airbag sensor assy center airbag sensor front lh)

  1. Turn the ignition switch to lock.
  2.  disconnect the negative () terminal cable from the battery, and wait at least for 90 seconds.
  3.  for the connector (on the airbag sensor assy center side) between the airbag sensor front lh and the airbag sensor assy center, measure the resistance between body ground and each of +sl and sl.

    Ok: resistance: 1 mΩ or higher

3 Check front airbag sensor (lh) circuit(open)(airbag sensor assy

3 Check front airbag sensor (lh) circuit(open)(airbag sensor assy center airbag sensor front lh)

  1. Using a service wire, connect +sl and sl of the connector (on the airbag sensor front lh side) between the airbag sensor assy center and the airbag sensor front lh.
  2.  for the connector (on the airbag sensor assy center side) between the airbag sensor front lh and the airbag sensor assy center, measure the resistance between +sl and sl.

    Ok: resistance: below 1 Ω

4 Inspect air bag sensor front lh

4 Inspect air bag sensor front lh

  1. For the connector of the airbag sensor front lh, measure the resistance between +sl and sl.

    Ok: resistance: 820 Ω

5 Check air bag sensor assy center

5 Check air bag sensor assy center

Sst 0984318040

  1. Disconnect the negative () terminal cable from the battery, and wait at least for 90 seconds.
  2.  connect the airbag sensor front lh connector and airbag sensor assy center connector.
  3.  connect the negative () terminal cable to the battery, and wait at least for 2 seconds.
  4.  turn the ignition switch to on, and wait at least for 20 seconds.
  5.  clear the dtc stored in memory .
  6.  turn the ignition switch to lock, and wait at least for 20 seconds.
  7.  turn the ignition switch to on, and wait at least for 20 seconds.
  8.  check the dtc .

    Ok: dtc b1158/b1159/16 is not output.

Hint

: codes other than code b1158/b1159/16 may be output at this time, but they are not relevant to this check.

Use simulation method to check

Use simulation method to check

6 Check engine room main wire harness (to b+)(conector airbag sensor front lh)

  1. Turn the ignition switch to lock.
  2.  disconnect the negative () terminal cable from the battery, and wait at least for 90 seconds.
  3.  disconnect the connector between the engine room main wire and the instrument panel wire.
  4.  connect the negative () terminal to the battery, and wait at least for 2 seconds.
  5.  turn the ignition switch to on.
  6.  for the engine room main wire connector (on the airbag sensor assy center side) between the airbag sensor assy center and the airbag sensor front lh, measure the voltage between body ground and each of +sl and sl.

    Ok: voltage: below 1 v

Repair or replace instrument panel wire

Repair or replace instrument panel wire

7 Check engine room main wire harness (to ground)(connector airbag sensor front lh)

  1. Disconnect the connectors between the engine room main wire and the instrument panel wire.
  2.  for the engine room main wire connector (on the airbag sensor assy center side) between the airbag sensor assy center and the airbag sensor front lh, measure the resistance between body ground and each of +sl and sl.

    Ok: resistance: 1 mw or higher

Repair or replace instrument panel wire

Repair or replace instrument panel wire

8 Check engine room main wire harness(open)(connector airbag sensor front lh)

  1. Disconnect the connectors between the engine room main wire and the instrument panel wire.
  2.  using a service wire, connect +sl and sl of the engine room main wire connector (on the airbag sensor front lh side) between the airbag sensor assy center and the airbag sensor front lh.
  3.  for the engine room main wire connector (on the airbag sensor assy center side) between the airbag sensor assy center and the airbag sensor front lh, measure the resistance between +sl and sl.

    Ok: resistance: below 1 Ω

Repair or replace instrument panel wire

Repair or replace instrument panel wire

Circuit description
The airbag sensor front lh circuit consists of the airbag sensor assy center and airbag sensor front lh. Dtc b1158/b1159/16 is recorded when malfunction is detected in the airbag sensor front l ...

Short in d squib (2nd step) circuit
Dtc b1180/17 short in d squib (2nd step) circuit ...

Other materials:

Description
When troubleshooting obd ii vehicles, the only difference from the usual troubleshooting procedure is that you need to connect the vehicle to the obd ii scan tool complying with sae j1978 or the handheld tester, and read various data output from the vehicles ecm. Obd ii regulations re ...

Driving assist systems
To help enhance driving safety and performance, the following systems operate automatically in response to various driving situations. Be aware, however, that these systems are supplementary and should not be relied upon too heavily when operating the vehicle. ◆ ABS (Anti-lock Brake Sys ...

Check short circuit
If the wire harness is ground shorted as shown in fig. 5, Locate the section by conducting a resistance check with the body ground in step (b). Check the resistance with the body ground.  Disconnect connectors a and c and measure the resistance between terminals 1 and 2 ...

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