Checking components and wiring
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 #B7 (#B17) and leak diagnostic unit terminal #1. 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 Contents
- For resistance values, see Component specifications
- To connect the breakout box, see Connecting the breakout box
- For information about signals on 5 cylinder engines, see Signal specification or Signal specification
- See Leak diagnostic pump, replacing .
- Continue
Refer to Information