Diagnosis Procedure
WARNING: This page is about a different car, the 2019 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK TCM INPUT SIGNALS
- Turn ignition switch OFF.
- Start the engine.
- Check voltage between TCM harness connector terminals.
+
-
Condition
Voltage
TCM
Connector
Terminal
F25
17
Ground
- Selector lever: "N" position
- At idle
0.70 - 0.85 V
Is the inspection result normal?
YES
Check intermittent incident. Refer to Intermittent Incident .
NO
GO TO 2.
- CHECK PRIMARY PRESSURE SENSOR POWER CIRCUIT
- Turn ignition switch OFF.
- Connect TCM connector.
- Disconnect CVT unit connector.
- Turn ignition switch ON.
- Check voltage between CVT unit harness connector terminal and ground.
+
-
Voltage
(Approx.)
CVT unit
Connector
Terminal
F43
22
Ground
5.0 V
Is the inspection result normal?
YES
GO TO 3.
NO
Repair or replace malfunctioning parts.
- CHECK PRIMARY PRESSURE SENSOR SIGNAL CIRCUIT
Check voltage between CVT unit harness connector terminal and ground.
+
-
Voltage
(Approx.)
CVT unit
Connector
Terminal
F43
13
Ground
0 V
Is the inspection result normal?
YES
GO TO 4.
NO
Repair or replace malfunctioning parts.
- CHECK TERMINAL CORD ASSEMBLY
- Turn ignition switch OFF.
- Remove terminal cord assembly. Refer to Removal and Installation .
- Check damage of terminal cord assembly.
Is the inspection result normal?
YES
There is malfunction of primary pressure sensor. Replace control valve assembly. Refer to Removal and Installation .
NO
Repair or replace malfunctioning parts.