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Toyota Corolla Repair Manual: Circuit description

The seat belt buckle switch (lh) circuit consists of the airbag sensor assy center and front seat inner belt assy (lh).

Dtc b0126/b0127/27 is recorded when a malfunction is detected in the seat belt buckle switch (lh) circuit.

Wiring diagram

Wiring diagram

Inspection procedure

Seat belt buckle switch (lh) malfunction
Dtc b0126/27 seat belt buckle switch (lh) malfunction Dtc b0127/27 seat belt buckle switch (lh) malfunction ...

Inspection procedure
1 Check wire harness(airbag sensor assy center front seat inner belt assy lh) Disconnect the negative () terminal cable from the battery, and wait at least for 90 seconds.  discon ...

Other materials:

Inspection procedure
1 Inspect fuse(ecuig fuse) Remove ecuig fuse from the instrument panel j/b.  check continuity of ecuig fuse. Ok: continuity 2 Inspect battery Ok: voltage: 10 14 v 3 Inspect skid control ecu connector(ig1 terminal voltage) In case of using handheld tester: ...

Manual shifting test
1. Perform manual shifting test Hint: by this test, it can be determined whether the trouble is within the electrical circuit or is a mechanical problem in the transaxle. Disconnect the transmission wire connector.  inspect the manual driving operation. Check that the shift and g ...

Engine coolant
The coolant level is satisfactory if it is between the F and L lines on the reservoir when the engine is cold. 1 Reservoir cap 2 F line 3 L line If the level is on or below the L line, add coolant up to the F line. ■Coolant selection Only use Toyota Super Long Life Coola ...

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