Inspection Procedure

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

NOTE: Performing the ACTIVE TEST using the Hand-held tester allows the relay, VSV, actuator and so on to operate without parts removal. Performing the ACTIVE TEST as a first step of troubleshooting is one of the method to shorten the labor time.

It is possible to display the DATA LIST during the ACTIVE TEST.

Warm up the engine.
Turn the ignition switch off.
Connect the hand-held tester to the DLC3.
Turn the ignition switch to the ON position.
Push the "ON" button of the hand-held tester.
Select the item "DIAGNOSIS/ENHANCED OBD I I/ACTIVE TEST".

According to the display on tester, perform the "ACTIVE TEST".

ACTIVE TEST ITEM REFERENCE

Item	Test Details	Diagnostic Note
LOCK UP	[Test Details] Control the shift solenoid SLto set the automatic transmission/transaxle to the lock-up condition. [Vehicle Condition] Vehicle Speed: 58 km/h (36 mph) or more	Possible to check the SL operation.

NOTE:

This test can be conducted when the vehicle speed is 58 km/h (36 mph) or more.
This test can be conducted with the O/D gear.

Lightly depress the accelerator pedal and check that the engine speed does not change abruptly.

NOTE:

When changing the accelerator pedal opening angle while driving, if the engine speed does not change, lock-up is on.
Slowly release, but not fully, the accelerator pedal in order to decelerate. (Fully releasing the pedal will close the throttle valve and lock-up may be turned off.)

Fig 1: Lock-Up ON And OFF Graph

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Check other DTCs output (in addition to DTC P0741)

PREPARATION:

Warm up the engine.
Turn the ignition switch off.
Connect the OBD II scan tool or hand-held tester to the DLC3.
Turn the ignition switch to the ON position.
Push the "ON" button of the OBD II scan tool or the hand-held tester.
Select the item "DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES".

CHECK:

Read the DTCs using the OBD II scan tool or the hand-held tester.

RESULT:

DTC OUTPUT RESULT

Display (DTC output)	Proceed to
Only "P0741" is output	A
"P0741" and other DTCs	B

NOTE: If any other codes besides "P0741" is output, perform the troubleshooting for those DTCs first.

B: Go to relevant DTC chart (See DIAGNOSTIC TROUBLE CODE CHART ).
A: Go to next step

Check shift solenoid valve SL operation
PREPARATION:
1. Jack up the vehicle.
2. Remove the oil pan.
3. Remove the shift solenoid valve SL.
CHECK:

Measure the resistance between the solenoid connector terminal and the body ground.

OK:
1. Resistance: 11 to 15 Ω at 20°C (68°F)
CHECK:

Connect the battery positive lead to the solenoid connector terminal and the battery negative lead to the solenoid body ground.

OK:
1. Solenoid sounds operation noise.
Fig 2: Checking Shift Solenoid Valve SL Operation
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: Replace the shift solenoid valve SL.
2. OK: Go to next step
Check valve body (See chapter 2 in the PROBLEM SYMPTOMS TABLE .
1. NG: Repair or replace the valve body (See VALVE BODY ASSEMBLY ).
2. OK: Go to next step
Check the torque converter clutch (See TORQUE CONVERTER CLUTCH AND DRIVE PLATE ).
1. NG: Replace the torque converter clutch.
2. OK: Repair or replace the transaxle ( AUTOMATIC TRANSAXLE UNIT ).