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 information about signals for 5 cylinder engines: Signal specification or Signal specification
- For resistance values: Component specifications
- See Leak diagnostic pump, replacing
- See Contents
- Continue
Refer to Verification