Inspection Procedure

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

HINT:

Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

Warm up the engine.
Turn the engine switch off.
Connect the Techstream to the DLC3.
Turn the engine switch on (IG).
Turn the Techstream on.
Enter the following menus: Powertrain/ECT/Data List.

According to the display on the Techstream, read the Data List.

TCM

TCM - DATA LIST

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
SPD (NC3)	No. 3 clutch drum speed/ Min.: 0 RPM Max.: 12750 RPM	0 RPM: 2nd or 8th gear Above 0 RPM: 1st, or 3rd to 7th gear	Data is displayed in increments of 50 RPM.

HINT:

SPD (NC3) is always 0 while driving: Open or short in the sensor or circuit.
SPD (NC3) is always more than 0 and less than 300 RPM while driving the vehicle at 50 km/h (31 mph) or more: Sensor trouble, improper installation, or intermittent connection trouble of the circuit.

INSPECT SPEED SENSOR TERMINAL (NC3 TERMINAL)

Disconnect the E50 transmission wire connector.
Turn the engine switch on (IG).

Measure the voltage according to the value(s) in the table below.

Standard Voltage

VOLTAGE SPECIFICATION

Tester Connection	Switch Condition	Specified Condition
E50-11 (NC3B) - Body ground	Engine switch on (IG)	11 to 14 V

Turn the engine switch off.

Measure the resistance according to the value(s) in the table below.

Fig 1: Identifying E50 Transmission Wire Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard Resistance

RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
E50-12 (NC3O) - Body ground	Always	100 Ω

NG: Go to step 3

OK: Go to next step

INSPECT TRANSMISSION WIRE (SPEED SENSOR NC3)

Disconnect the speed sensor (NC3) connector.
Disconnect the E50 transmission wire connector.

Measure the resistance according to the value(s) in the table below.

Standard Resistance

RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
Terminal 1 of the speed sensor (NC3) connector - 11 (NC3B)	Always	Below 1 Ω
Terminal 2 of the speed sensor (NC3) connector - 12 (NC3O)	Always	Below 1 Ω
Terminal 1 of the speed sensor (NC3) connector or 11 (NC3B) - Body ground	Always	10 kΩ or higher
Terminal 2 of the speed sensor (NC3) connector or 12 (NC3O) - Body ground	Always	10 kΩ or higher

Fig 2: Identifying Transmission Wire And Speed Sensor NC3 Connectors Terminals

NG: REPAIR OR REPLACE TRANSMISSION WIRE (See REMOVAL )

OK: REPLACE SPEED SENSOR (See REMOVAL )

CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - TCM)

Disconnect the E50 transmission wire connector.
Disconnect the E7 TCM connector.

Measure the resistance according to the value(s) in the table below.

Standard Resistance

RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
E50-11 (NC3B) - E7-28 (NC3B)	Always	Below 1 Ω
E50-12 (NC3O) - E7-22 (NC3O)	Always	Below 1 Ω
E50-11 (NC3B) or E7-28 (NC3B) - Body ground	Always	10 kΩ or higher
E50-12 (NC3O) or E7-22 (NC3O) - Body ground	Always	10 kΩ or higher

Fig 3: Identifying E50 And E7 TCM Connector Terminals

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

REPLACE TCM
1. Replace the TCM (See REMOVAL ).
  NEXT: PERFORM A/T CODE REGISTRATION (See REGISTRATION )