Toyota Tacoma manuals

Toyota Corolla Repair Manual: Ecu power source circuit

Circuit description

This circuit provides power to operate the tvip ecu.

Wiring diagram

Inspection procedure

Inspection procedure

1 Check fuse (ecub)

  1. Remove the fuse from the instrument panel j/b.
  2.  check the continuity of the fuse.

Standard: continuity

2 Check tvip ecu

2 Check tvip ecu

  1. Disconnect the tvip ecu connector.
  2.  measure the voltage between the terminals of the ecu connector, as shown in the illustration and table.

Standard:

3 Check wire harness (tvip ecu  body ground)

3 Check wire harness (tvip ecu  body ground)

  1. Disconnect the tvip ecu connector.
  2. check the connector on the harness side, as shown in the illustration and table.

Standard:

Check and replace tvip ecu

Check and replace tvip ecu

Inspection procedure
1 Check security indicator light Remove the security indicator.  check the indicator light, as shown in the illustration and table. Standard: 2 Check wire harness (tvip ecu& ...

Ignition switch circuit
...

Other materials:

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► Type A 1 Up Pull the head restraints up. 2 Down Push the head restraint down while pressing the lock release button. ► Type B 1 Up Pull the head restraints up. 2 Down Push the head restraint down while pressing the lock release button. ■Removing the head restraints ...

Replacement
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Dtc check/clear
1. Dtc check (normal mode) Notice: handheld tester only: when the diagnostic system is switched from the normal mode to the check mode, all the dtcs and freeze frame data recorded in the normal mode will be erased. So before switching modes, always check the dtcs and freeze frame data, and n ...

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