Test Mode No. 2 (Verifying Operation Of System Components)

Sensors and switches are activated by diagnostic unit. When TCM receives a signal, a response code is displayed for each input signal. This function checks component operation, wiring and connections in each circuit. If response code is displayed, component and circuit are okay. If response code is not displayed, TCM has not received a signal. Check appropriate component or circuit and repair as necessary.
This test mode is activated by briefly pressing test button on diagnostic unit 2 times, causing LED to rapidly flash. TCM will flash a code indicating receipt of a signal from components.
Activate sensors or switches by operating appropriate component as described in RESPONSE CODE IDENTIFICATION table. Diagnostic unit LED should display appropriate response code.

NOTE: For optimum results, components should be activated in order given in RESPONSE CODE IDENTIFICATION table. Components may be tested individually if necessary.

RESPONSE CODE IDENTIFICATION

Component & Position

Circuit Tested

⁽¹⁾ Response Code

Gear Position Sensor

"R" To "P"

Park

2-4-2

"P" To "R"

Reverse

1-4-4

"R" To "N"

Neutral

2-4-1

"N" To "D"

Drive

2-1-4

"D" To "3"

3rd Gear

2-2-4

"3" To "L"

Low Gear

2-3-4

Any Position

⁽²⁾ Position Sensor

2-4-3

Mode Selector Switch

Economy

Ecomomy Mode

2-4-4

Sport

Sport Mode

3-1-4

Winter

Winter Mode

3-2-4

Brake Pedal Depressed

Brake Switch

3-3-4

Acc. Pedal At WOT

Kickdown Switch

3-4-1

⁽¹⁾	If code is displayed, component and circuit tested are okay.

⁽²⁾	If code 2-4-3 is present, gear position sensor is faulty.