Diagnostic Test

1. Verify correct order of U/V/W connection at PIM and e-Motor.
2. Verify tight connections at PIM and e-Motor.
3. Inspect 3 Phase Wire Harness for damage (pinched, bent, cut).
   NOTE:

   Any time the Power Inverter Module (PIM) cover is removed, it MUST BE REPLACED due to a non reusable seal.

   Disconnect 3 Phase Wire Harness from PIM and check for melted or damaged Connectors.

   Was there any damage to the connectors?

   Yes 

   • Replace 3-Phase wire harness according to written service procedure
   • Perform the EVCU VERIFICATION TEST. Refer to EVCU VERIFICATION TEST .

   No 

   • Go To  2

1. Disconnect 3 Phase Wire Harness from e-Motor.

2. Use a qualified micro Ohm measurement instrument to measure the resistance value between the three pins (U/V/W) of the e-Motor, 3 measurements in total (U-V, U-W, V-W).

   Is the Resistance ok?

   Yes 

   • Replace the e-Motor. Refer to MOTOR, ELECTRIC, REMOVAL .
   • Perform the EVCU VERIFICATION TEST. Refer to EVCU VERIFICATION TEST .

   No 

   • Go To  3

Disconnect the 3 Phase Wire Harness from the PIM and the e-Motor.

1. Using a qualified Multimeter, make the following measurements.

   Probe motor side pin 3 to PIM side pin 1, should be short

   Probe motor side pin 2 to PIM side pin 2, should be short

   Probe motor side pin 1 to PIM side pin 3, should be short

   Probe motor side pin 1 to PIM side pin 1, 2, should be open

   Probe motor side pin 2 to PIM side pin 1, 3, should be open

   Probe motor side pin 3 to PIM side pin 2, 3, should be open

   Were the above Tests true?

   Yes 

   • Test complete, the Condition that caused the DTC is not present at this time.
   • Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .

   No 

   • Replace the 3 Phase Wire Harness in accordance with the service information.
   • Perform the EVCU VERIFICATION TEST. Refer to EVCU VERIFICATION TEST .