Test Procedure

1. BB1 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS) 
   NOTE: The DTC P0887 may set as a result of a low 12 volt battery concern.
   NOTE: The DTC P0562 and DTC U3003 may be set in addition to DTC P0887. Diagnose all other DTCs before entering this pinpoint test.

   Are DTCs P0886, P0887, P2531, or P2533 present? 

   Yes	No
   GO to  BB2.	If sent to this test from Pinpoint Test BC, GO to  BB2. For C-MAX, GO to  BB3. For all others, GO to  BB5.

2. BB2 CHECK THE BATTERY AND CHARGING SYSTEM 
   • Check the battery and charging system voltages. Refer to the Service Information, Charging System.

   Are the battery and charging system voltages within specification? 

   Yes	No
   For C-MAX, GO to  BB3. For all others, GO to  BB5.	REPAIR as necessary. REFER to the Service Information, Charging System. Clear the SOBDMC DTCs. REPEAT the self-test.

3. BB3 CHECK THE TCM POWER RELAY 
   • Carry out the TCM power relay component test. Refer to the Wiring Diagrams article, Component Testing.

   Does the TCM power relay pass the component test? 

   Yes	No
   GO to  BB4.	INSTALL a new TCM Power relay. Clear the SOBDMC DTCs. REPEAT the self-test.

4. BB4 CHECK THE VOLTAGE TO THE TCM POWER RELAY 
   • Ignition ON, engine OFF.
   • Measure the voltage between:

     (+) TCM Power Relay Connector, Harness Side	(-)
     B+ - Pin 1, 3	Ground

   Is the voltage greater than 10.5 V? 

   Yes	No
   GO to  BB5.	REPAIR the open circuit. Clear the SOBDMC DTCs. REPEAT the self-test.

5. BB5 CHECK THE B+ CIRCUIT FOR VOLTAGE 
   • Ignition ON, engine OFF.
   • TCM-A connector disconnected.
   • Measure the voltage between:

     (+) TCM-A Connector, Harness Side	(-)
     B+ - Pin 6	Ground

   Is the voltage greater than 10.5 V? 

   Yes	No
   GO to  BB6.	REPAIR the open circuit. Clear the SOBDMC DTCs. REPEAT the self-test.

6. BB6 CHECK THE TCMRC CIRCUIT FOR AN OPEN 
   • Ignition OFF.
   • For C-MAX,
   • Measure the resistance between:

     (+) TCM Power Relay Connector, Harness Side	(-) TCM-A Connector, Harness Side
     TCMRC - Pin 2	TCMRC - Pin 40

   • For all others,
   • BJB-B connector disconnected.
   • Measure the resistance between:

     (+) BJB-B Connector, Harness Side	(-) TCM-A Connector, Harness Side
     TCMRC - Pin 39	TCMRC - Pin 40

   Is the resistance less than 5 ohms? 

   Yes	No
   GO to  BB7.	REPAIR the open circuit. Clear the SOBDMC DTCs. REPEAT the self-test.

7. BB7 CHECK THE TCMRC CIRCUIT FOR A SHORT TO GROUND 
   • Measure the resistance between:

     (+) TCM-A Connector, Harness Side	(-)
     TCMRC - Pin 40	Ground

   Is the resistance greater than 10K ohms? 

   Yes	No
   GO to  BB8.	REPAIR the short circuit. Clear the SOBDMC DTCs. REPEAT the self-test.

8. BB8 CHECK THE TCMRC CIRCUIT FOR A SHORT TO VOLTAGE 
   • Ignition ON, engine OFF.
   • Measure the voltage between:

     (+) TCM-A Connector, Harness Side	(-)
     TCMRC - Pin 40	Ground

   Is any voltage present? 

   Yes	No
   REPAIR the short circuit. Clear the SOBDMC DTCs. REPEAT the self-test.	GO to  BB9.

9. BB9 CHECK FOR AN OPEN VPWR CIRCUIT 
   • Ignition OFF.
   • For C-MAX,
   • Measure the resistance between:

     (+) TCM Power Relay Connector, Harness Side	(-) TCM-A Connector, Harness Side
     VPWR - Pin 5	VPWR - Pin 10, 9

   • For all others,
   • Measure the resistance between:

     (+) BJB-B Connector, Harness Side	(-) TCM-A Connector, Harness Side
     VPWR - Pin 46	VPWR - Pin 10, 9

   Are the resistances less than 5 ohms? 

   Yes	No
   GO to  BB10.	REPAIR the open circuit. Clear the SOBDMC DTCs. REPEAT the self-test.

10. BB10 CHECK THE TCM VPWR CIRCUIT FOR VOLTAGE 
    • Ignition ON, engine OFF.
    • Measure the voltage between:

      (+) TCM-A Connector, Harness Side	(-)
      VPWR - Pin 29	Ground

    Is the voltage greater than 10.5 V? 

    Yes	No
    GO to  BB11.	REPAIR the open circuit. Clear the SOBDMC DTCs. REPEAT the self-test.

11. BB11 CHECK THE TCM POWER RELAY VPWR CIRCUIT FOR A SHORT TO VOLTAGE 
    • For C-MAX,
    • Measure the voltage between:

      (+) TCM Power Relay Connector, Harness Side	(-)
      VPWR - Pin 5	Ground

    • For all others,
    • Measure the voltage between:

      (+) BJB-B Connector, Harness Side	(-)
      VPWR - Pin 46	Ground

    Is any voltage present? 

    Yes	No
    REPAIR the short circuit. Clear the SOBDMC DTCs. REPEAT the self-test.	GO to  BB12.

12. BB12 CHECK THE TCM VPWR CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • BJB-B connector connected.
    • Measure the voltage between:

      (+) TCM-A Connector, Harness Side	(-)
      VPWR - Pin 29	Ground

    Is any voltage present? 

    Yes	No
    REPAIR the short circuit. Clear the SOBDMC DTCs. REPEAT the self-test.	For C-MAX, GO to  BB14. For all others, GO to  BB13.

13. BB13 CHECK THE VPWR CIRCUITS FOR VOLTAGE 
14. Ignition OFF.
    • BJB-B connector connected.
    • Connect a 5 amp fused jumper wire between the following:
    • Ignition ON, engine OFF.
    • Measure the voltage between:

      (+) TCM-A Connector, Harness Side	(-)
      VPWR - Pin 10, 9	Ground

    Is the voltage greater than 10.5 V? 

    Yes	No
    GO to  BB14.	INSTALL a new BJB. Clear the SOBDMC DTCs. REPEAT the self-test.

15. BB14 CHECK FOR CORRECT TCM OPERATION 

• Ignition OFF.
• Disconnect all the TCM connectors.
• Visually inspect for:
  • pushed out pins
  • corrosion
• Connect all the TCM connectors and make sure they seat correctly.
• Ignition ON, engine OFF.
• Ignition OFF.
• Wait 2 minutes after ignition OFF to allow the TCM to complete a normal power down sequence. Refer to HYBRID ELECTRIC CONTROL SOFTWARE
• Ignition ON, engine OFF.
• Clear the SOBDMC DTCs.
• Ignition OFF.
• Ignition ON, engine OFF.
• Carry out the SOBDMC self-test.
• Verify the concern is still present.

Is the concern still present?