CONNECTOR MEASUREMENT SERVICE POINTS


caution During diagnosis, a diagnosis code associated with other system may be set when the ignition switch is turned on with connector(s) disconnected. On completion, confirm all systems for diagnosis code(s). If diagnosis code(s) are set, erase them all.
Turn the ignition switch to the "LOCK" (OFF) position when connecting and disconnecting the connectors. Turn the ignition switch to "ON" when measuring, unless there are instructions to the contrary.

IF INSPECTING WITH THE CONNECTOR CONNECTED <WATERPROOF CONNECTORS>
caution Never insert a test probe from the harness side, as this will reduce the waterproof performance and result in corrosion.

Use the special tools such as test harness, harness connector or check harness.

IF INSPECTING WITH THE CONNECTOR CONNECTED <ORDINARY (NON-WATERPROOF) CONNECTORS>

Inspect by inserting a test probe from the harness side. If the connector is too small to insert a test probe (e.g. control unit connector), do not insert it forcibly. Use special tool extra fine probe (MB992006).

IF INSPECTING WITH THE CONNECTOR DISCONNECTED <WHEN INSPECTING A FEMALE PIN>
caution
  • Use special tool inspection harness (MB991219). If the test bar is inserted forcibly, it will cause a poor contact.
  • If the connector is disconnected, a diagnosis code may be stored for the system to be checked or other systems.

Use inspection harness (MB991219) of special tool harness set (MB991223).

IF INSPECTING WITH THE CONNECTOR DISCONNECTED <WHEN INSPECTING A MALE PIN>
caution
  • Be careful not to short the connector pins with the test bars. To do so may damage the circuits inside the ECU.
  • If the connector is disconnected, a diagnosis code may be stored for the system to be checked or other systems.

Touch the pin directly with the test bar.