4 - Checking the Component and Wiring

Checking The Component And Wiring







Check the leak diagnostic unit connectors. Check for contact resistance and oxidation.

Check the resistance of the pump motor between the leak diagnostic unit connector terminals #1 and #4 (leak diagnostic pump side).

Check the hose and the filter for the air intake on the leak diagnostic unit. Check for blockages.

Try a new leak diagnostic unit if no fault is found during the above fault-tracing.

Remedy as necessary.

Other information:
- For resistance values, see Component specifications.
- To connect the breakout box, see Connecting the breakout box.
- To check the hoses, see Leak diagnostic pump, replacing.
- To access or replace the leak diagnostic unit, see Leak diagnostics unit, replacing.
- For information about signals, see Signal specification (under Diagnostic Parameters and Pinout Values).
- Checking wiring and terminals.

Continue with Test (See Verification - I). 23 - Verification