mercury Workshop Repair Guides

Mercury Workshop Service and Repair Manuals

Initial Inspection and Diagnostic Overview|Page 6297 > < Initial Inspection and Diagnostic Overview|Page 6295
Page 2
background image

-

Measure the voltage between DC/DC C1457B, B+ terminal and ground.

-

Start the engine.

-

Measure the voltage between DC/DC C1457B, B+ terminal and ground.

-

Did the voltage increase with the ignition ON?

Yes

GO to A3.

No

GO to A2.

-------------------------------------------------
A2 CHECK THE DC TO DC VOLTAGE CONVERTER STATUS (EnableStat) PID

 

-

Connect the scan tool.

-

Enter the following diagnostic mode on the scan tool: DataLogger - DC/DC.

-

Monitor the EnableStat PID.

-

Does the PID read Enable?

Yes

GO to A4.

No

CARRY OUT self-test of the PCM and Battery Energy Control Module (BECM). REFER to Computers and Control Systems Information and Hybrid
Drive Systems for further diagnosis.

-------------------------------------------------
A3 CHECK THE PCM RELAY CONTROL INPUT TO THE DC/DC

 

-

Ignition OFF.

-

Disconnect: DC/DC C1457D.

-

Start the engine.

-

Measure the voltage between DC/DC C1457D-7, circuit CBK03 (GY), harness side and ground.

Initial Inspection and Diagnostic Overview|Page 6297 > < Initial Inspection and Diagnostic Overview|Page 6295