Checking Components And Wiring
Check the resistance of the valve between the leak diagnostic unit connector terminals #3 and #4 (leak diagnostic pump side).
Check the signal cable between engine control module (ECM) terminal #B40 (#B50) and leak diagnostic unit terminal #3. Check for a short-circuit to supply voltage.
Try a new leak diagnostic unit if no fault is found during the above fault-tracing.
Remedy as necessary.
Other information:
- see CONNECTING THE BREAKOUT BOX
- For 5 cylinder turbocharged engines 2005-, see SIGNAL SPECIFICATION .
- For 6 cylinder engines 2005-, see SIGNAL SPECIFICATION .
- For resistance values: COMPONENT SPECIFICATIONS
- see LEAK DIAGNOSTIC PUMP, REPLACING
- see CHECKING WIRING AND TERMINALS
- Continue
Refer to VERIFICATION