Checking components and connections
Check the signal cable from engine control module (ECM) terminal #B7 (#B17) to leak diagnostic pump terminal #1. Check for an open-circuit. Check for a short-circuit to ground.
Check the engine control module (ECM) and leak diagnostic pump connectors. Check for contact resistance and oxidation.
Remedy as necessary.
Other information:
- To connect the breakout box, see Connecting the breakout box
- For information about signals, see Signal specification
- See Leak diagnostic pump, replacing .
- To fault-trace the wiring and terminals, see Contents .
- Continue
Refer to Information