Home › Drivetrain › Automatic Transmission/Transaxle › AB60F AUTOMATIC TRANSMISSION / TRANSAXLE: AUTOMATIC TRANSMISSION SYSTEM
Last Modified: 11-27-2007 1.6 C
Service Category: Drivetrain Section: Automatic Transmission/Transaxle
Model Year: 2008 Model: LX570 Doc ID: RM000000W8A04TX
Title: AB60F AUTOMATIC TRANSMISSION / TRANSAXLE: AUTOMATIC TRANSMISSION SYSTEM: DESCRIPTION (2008 LX570)

DTC

P2716

Pressure Control Solenoid "D" Electrical (Shift Solenoid Valve SLT)

DESCRIPTION

Refer to DTC P0894 AB60F AUTOMATIC TRANSMISSION / TRANSAXLE: AUTOMATIC TRANSMISSION SYSTEM: DESCRIPTION (2008 LX570)+ .

DTC Code

DTC Detection Condition

Trouble Area

P2716

Conditions (a) or (b) below are detected for 1 sec. or more (1 trip detection logic).

(a) Shift solenoid valve SLT - terminal: 0 V.

(b) Shift solenoid valve SLT - terminal: 12 V.
  • Open or short in shift solenoid valve SLT circuit
  • Shift solenoid valve SLT
  • ECM

Reference: Inspect using an oscilloscope.

Check the waveform of the ECM connector.

Standard:

Terminal No. (Symbol)

Tool Setting

Condition

Specified Condition

C53-9 (SLT+) - C53-8 (SLT-)

5 V/DIV., 1 msec./DIV.

Engine idling

Refer to illustration


MONITOR DESCRIPTION

When an open or short in the shift solenoid valve SLT circuit is detected, the ECM interprets this as a fault. The ECM will turn on the MIL and store the DTC.

MONITOR STRATEGY

Related DTCs

P2716: Shift solenoid valve SLT/Range check

Required sensors/Components

Shift solenoid valve SLT

Frequency of operation

Continuous

Duration

1 sec.

MIL operation

Immediately

Sequence of operation

None

TYPICAL ENABLING CONDITIONS

All

The monitor will run whenever the following DTCs are not stored

None

Engine switch

On (IG)

Starter

OFF

Condition (A)

Solenoid current cut status

Not cut

Target current

0.1 A or higher

Battery voltage

11 V or higher

Condition (B)

Battery voltage

8 V or higher

TYPICAL MALFUNCTION THRESHOLDS

When either condition below is met: Condition (A) or (B)

Condition (A)

Solenoid status from Hybrid IC

Failure

Condition (B)

Hybrid IC status

Failure

COMPONENT OPERATING RANGE

Output signal duty

Less than 100%

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1.

INSPECT NO. 1 TRANSMISSION WIRE (SHIFT SOLENOID VALVE SLT)

(a) Disconnect the C39 No. 1 transmission wire connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

13 (SLT+) - 5 (SLT-)

20°C (68°F)

5.0 to 5.6 Ω

13 (SLT+) - Body ground

Always

10 kΩ or higher

5 (SLT-) - Body ground

Always

10 kΩ or higher
OK

2.

CHECK HARNESS AND CONNECTOR (NO. 1 TRANSMISSION WIRE - ECM)


(a) Disconnect the C53 ECM connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

C53-9 (SLT+) - C53-8 (SLT-)

20°C (68°F)

5.0 to 5.6 Ω

C53-9 (SLT+) - Body ground

Always

10 kΩ or higher

C53-8 (SLT-) - Body ground

Always

10 kΩ or higher
OK

3.

INSPECT SHIFT SOLENOID VALVE SLT

(a) Remove shift solenoid valve SLT.



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

Standard Resistance:

Tester Connection

Condition

Specified Condition

1 - 2

20°C (68°F)

5.0 to 5.6 Ω

(c) Apply battery voltage (12 V) to the shift solenoid valve and check that the valve moves and makes an operating noise.

OK:

Measurement Condition

Specified Condition
  • Battery positive (+) with a 21 W bulb → Terminal 2
  • Battery negative (-) → Terminal 1

Valve moves and makes an operating noise
OK