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 signal cable between engine control module (ECM) terminal #B33 (#C33) and leak diagnostic pump terminal #1. Check for an open-circuit.
Check the power supply cable between system relay terminal #5 and leak diagnostic unit terminal #4. Check for an open-circuit.
Remedy as necessary.
Other information
- see CONNECTING THE BREAKOUT BOX
- see SIGNAL SPECIFICATION
- see COMPONENT SPECIFICATIONS
- see LEAK DIAGNOSTIC PUMP
- see CHECKING WIRING AND TERMINALS
- Continue
Refer to INFORMATION