Checking the power supply and ground for the engine control module (ECM)

Check that the fuse for the control module is intact.

Check the power supply and ground for the engine control module (ECM) as follows.

Remedy as necessary.

Other information: 

• See Checking power supply and ground terminal, engine control module (ECM)
• See Contents

Was a fault detected? 

• YES 

  Refer to Checking the engine control module (ECM) 

• NO 

  Refer to Checking communication with the engine control module (ECM)