Diagnosis Procedure
WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK CIRCUIT BETWEEN TCM AND CVT UNIT (PART 1)
- Turn ignition switch OFF.
- Disconnect TCM connector and CVT unit connector.
- Check continuity between TCM harness connector terminals and CVT unit harness connector terminals.
TCM
CVT unit
Continuity
Connector
Terminal
Connector
Terminal
F25
11
F43
18
Existed
12
12
Is the inspection result normal?
YES
GO TO 2.
NO
Repair or replace malfunctioning parts.
- CHECK CIRCUIT BETWEEN TCM AND CVT UNIT (PART 2)
- Turn ignition switch ON.
- Check voltage between TCM harness connector terminal and ground.
+
-
Voltage
(Approx.)
TCM
Connector
Terminal
F25
12
Ground
0 V
Is the inspection result normal?
YES
GO TO 3.
NO
Repair or replace malfunctioning parts.
- CHECK CVT FLUID TEMPERATURE SENSOR
- Turn ignition switch OFF.
- Check resistance between CVT unit connector terminals.
CVT unit
Condition
Resistance
(Approx.)
Connector
Terminal
F209
12 - 18
CVT fluid temperature: 20 deg.C (68 deg.F)
6.5 kOhm
CVT fluid temperature: 50 deg.C (122 deg.F)
2.2 kOhm
CVT fluid temperature: 80 deg.C (176 deg.F)
0.87 kOhm
Is the inspection result normal?
YES
Check intermittent incident. Refer to Intermittent Incident .
NO
Replace terminal code assembly. Refer to Removal and Installation .