DTC P2808: Pressure Control Solenoid "G" Performance (Shift Solenoid Valve SL4): Procedure

WARNING: This page is about a different car, the 2010 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.

CHECK OTHER DTCS OUTPUT (IN ADDITION TO DTC P2808)

Connect Techstream to the DLC3.
Turn the ignition switch on (IG) and turn the Techstream on.
Enter the following items: "Powertrain / ECT / Trouble Codes".

Read the DTCs using Techstream.

Result

Display (DTC output)	Proceed to
Only "P2808" is output	A
"P2808" and other DTCs	B

HINT:

If a solenoid is stuck OFF, DTCs for several solenoids including the malfunctioning solenoid will be detected.

A → See step 3

B: Go to next step

PERFORM ACTIVE TEST USING TECHSTREAM

NOTE:

This test should always be performed with at least 2 people.

Connect Techstream to the DLC3.
Turn the ignition switch on (IG) and turn Techstream on.

Enter the following items: "Powertrain / ECT / Active Test".

HINT:

Comparing the shift position commanded by the Active Test with the actual shift position enables confirmation of the problem. Refer to FAIL-SAFE CHART .

Item	Test Details	Diagnostic Note
Control the Shift Position	[Test Details] Operate the shift solenoid valve and set each shift position by yourself. [Others] Press "→" button: Shift up Press "←" button: Shift down	Possible to check the operation of the shift solenoid valves.

NOTE:

This test can be conducted when the vehicle is stopped.
When shifting gears using the Active Test function, do not operate the accelerator pedal for 2 seconds before and after shifting gears.

HINT:

The shift position commanded by the TCM is shown in the Data List/Shift Status display on Techstream.

Check the vehicle speed and the gear position when the engine speed is 1,000 RPM.

HINT:

Because the torque converter clutch has not engaged, it may be difficult to obtain the speeds specified in 4th, 5th, and 6th gear, however a difference of speed should still be evident following each gear change.

Standard

1st	2nd	3rd	4th	5th	6th
5 to 7.5 mph (8 to 12 km/h)	9.3 to 11.8 mph (15 to 19 km/h)	13.0 to 15.5 mph (21 to 25 km/h)	19.3 to 21.7 mph (31 to 35 km/h)	27.3 to 29.8 mph (44 to 48 km/h)	32.3 to 34.8 mph (52 to 56 km/h)

Compare the TCM gear shift command and the actual gear position.

Result

Actuator gear position under malfunction		TCM gear shift command						Proceed to
Actuator gear position under malfunction		1st	2nd	3rd	4th	5th	6th	Proceed to
Shift solenoid SL1	Stuck ON	1st	2nd	3rd	4th	4th	4th	A
Shift solenoid SL1	Stuck OFF	N^*1	N^*1	N^*1	N^*1	5th	6th	A
Shift solenoid SL2	Stuck ON	4th	4th	4th	4th	5th	6th	B
Shift solenoid SL2	Stuck OFF	1st	2nd	3rd	1st	N^*1	N^*1	B
Shift solenoid SL3	Stuck ON	2nd	2nd	3rd	4th	5th	6th	C
Shift solenoid SL3	Stuck OFF	1st	1st	3rd	4th	5th	N^*1	C
Shift solenoid SL4	Stuck ON^*3	3rd	3rd	3rd	4th	5th	5th	D
Shift solenoid SL4	Stuck OFF	1st	2nd	1st	4th	N^*1	6th	D
Shift solenoid SLT	Stuck ON	N^*2	N^*2	N^*2	N^*2	N^*2	N^*2	E
Shift solenoid SLT	Stuck OFF^*3	1st	2nd	3rd	4th	5th	6th	E

HINT:

*1: Neutral
*2: If the shift solenoid SLT is stuck on, the line pressure will be low. Therefore, the amount of torque that can be transmitted by each gear is lower than the normal limit. When the engine power exceeds this lowered limit, the engine speed will increase freely.
*3: When shift solenoid SLT is stuck OFF, gear shifting is normal.

E → GO TO DTC CHART (RELATED SHIFT SOLENOID VALVE (SLT) PERFORMANCE DTC P2714)

C → GO TO DTC CHART (RELATED SHIFT SOLENOID VALVE (SL3) PERFORMANCE DTC P0796)

B → GO TO DTC CHART (RELATED SHIFT SOLENOID VALVE (SL2) PERFORMANCE DTC P0776)

A → GO TO DTC CHART (RELATED SHIFT SOLENOID VALVE (SL1) PERFORMANCE DTC P0746)

D: Go to next step

INSPECT SHIFT SOLENOID VALVE SL4

Remove the shift solenoid valve SL4.

Fig 1: Inspecting Shift Solenoid Valve (SL3)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard resistance

Tester Connection	Specified Condition 20°C (68°F)
1 - 2	5.0 to 5.6 Ω

Connect a positive (+) lead through a 21 W bulb to terminal 2 and a negative (-) lead to terminal 1 of the solenoid valve connector, then check the movement of the valve.
OK

The solenoid makes an operating noise.

NG → REPLACE SHIFT SOLENOID VALVE SL4

OK: Go to next step

INSPECT TRANSMISSION VALVE BODY ASSEMBLY
OK

There are no foreign objects on each valve and they operate smoothly.

NG → REPAIR OR REPLACE TRANSMISSION VALVE BODY ASSEMBLY

OK → REPLACE AUTOMATIC TRANSAXLE ASSEMBLY