Diagnostic Test

WARNING: This page is about a different variant/trim than selected.

CHECK E-MOTOR COOLING SYSTEM
1. 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 information.
  
  No
  - Go To 2
CHECK TEMPERATURE SENSOR
1. Vehicle ignition off and without charging (at least 6 hours).
2. Measure ambient temperature and record.
3. 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 3. Otherwise, troubleshooting is complete.
CHECK TEMPERATURE SENSOR WIRING HARNESS
1. Disconnect Temperature Sensor wiring harness from PIM and from e-Motor.
2. 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.
3. Check continuity between motor side pin 5 to PIM side pin 23; motor side pin 6 to PIM side pin 22.
  Was there continuity?
  
  Yes
  - Go To 4
  No
  
  Replace Wire Harness in accordance with the service information.

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	2826	2743	2909
	55	131	3335	3233	3437
	50	122	3955	3829	4081
	45	113	4712	4556	4868
	40	104	5642	5447	5837
	35	95	6791	6546	7035
	30	86	8217	7910	8525
	25	77	10000	9610	10389
	20	68	12240	11745	12735
	15	59	15074	14440	15708
	10	50	18683	17865	19500
	5	41	23310	22250	24370
	0	32	29285	27901	30670
	-5	23	37060	35240	38881
	-10	14	47256	44844	49669
	-15	5	60737	57515	63959
	-20	-4	78713	74373	83052

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 .