Diagnostic Test
WARNING: This page is about a different variant/trim than selected.
- E-MOTOR COOLING SYSTEM
- Visually Inspect e-Motor Cooling System.
Were there any Leakages, Defective Parts or Improper Connections Found?
Yes
Repair/Replace the damaged parts in accordance with the service procedure.
No
- Go To 2
- Visually Inspect e-Motor Cooling System.
- CHECK TEMPERATURE SENSOR
- Vehicle ignition off and without charging (at least 6 hours).
- Measure ambient temperature and record.
- Using Scan tool, measure e-Motor Stator Temperature.
Is the difference between e-Motor stator temperature and ambient temperature greater than 8 degrees Celsius?
Yes
- Go To 3
No
- Clear all fault codes, key OFF, wait 30 seconds, then key ON, but do not crank, wait 30 seconds.
- If fault of interest is still present, go to 3Otherwise, troubleshooting is complete.
- Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
- CHECK TEMPERATURE SENSOR WIRING HARNESS
- Disconnect temperature sensor wiring harness from PIM (28-way) and from e-Motor (6-way connector WITHOUT yellow clip).
- Check the harness for connector corrosion on both sides of the wiring harness. If temperature sensor wiring harness connectors have moderate to high corrosion, then replace wiring harness.
- Check continuity between motor side pin 5 to PIM side pin 23; motor side pin 6 to PIM side pin 22.
Were any problems found?
Yes
Repair wire Harness in accordance with the Service Procedure.
No
- Go To 4
- CHECK TEMPERATURE SENSOR SIGNAL PINS ON E-MOTOR
E-machine temperature sensor Sensor type: NTC-10K (inside of E-machine) NTC Resistance Temperature Curve: Temp. [°C] Temp. [°F] R Nom [Ohm] R Min [Ohm] R Max [Ohm] 60 140 2, 826 2, 743 2, 909 55 131 3, 335 3, 233 3, 437 50 122 3, 955 3, 829 4, 081 45 113 4, 712 4, 556 4, 868 40 104 5, 642 5, 447 5, 837 35 95 6, 791 6, 546 7, 035 30 86 8, 217 7, 910 8, 525 25 77 10, 000 9, 610 10, 389 20 68 12, 240 11, 745 12, 735 15 59 15, 074 14, 440 15, 708 10 50 18, 683 17, 865 19, 500 5 41 23, 310 22, 250 24, 370 0 32 29, 285 27, 901 30, 670 -5 23 37, 060 35, 240 38, 881 -10 14 47, 256 44, 844 49, 669 -15 5 60, 737 57, 515 63, 959 -20 -4 78, 713 74, 373 83, 052 - Measure the resistance between Pin 5, 6.
Is the resistance outside the value specified in the temperature/resistance reference table?
Yes
- Replace the e-Motor. Refer to MOTOR, ELECTRIC, REMOVAL .
- Perform the EVCU VERIFICATION TEST. Refer to EVCU VERIFICATION TEST .
No
- Replace the Power Inverter Module (PIM). Refer to MODULE, POWER INVERTER (PIM), REMOVAL .
- Perform the EVCU VERIFICATION TEST. Refer to EVCU VERIFICATION TEST .
- Measure the resistance between Pin 5, 6.