Transmission service required (alarm code is P0705)

Welcome to 2CarPros.

The code is related to the transmission range switch. This switch tells the transmission control module (TCM) what gear you have selected. If it fails, it will set this code because the TCM recognizes the vehicle is moving, but doesn't realize it is in drive.

Because the vehicle is newer and these components rarely go bad, the first thing I suggest is to check the adjustment cable that attaches to the switch. Here are the directions. The attached pictures correlate with these directions. Also, pics 3 and 4 show location (letter D).

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TRANSMISSION RANGE SWITCH AND CONTROL CABLE ADJUSTMENT

1. Move the selector lever to the N range.

2. Loosen the adjusting nut so that the manual control lever moves freely.

3. Move the manual control lever to Neutral position.


Picture 1

4. Align the hole at the end of the manual control lever and the hole in the transmission range switch body flange (section A - A).
NOTE:
Insert a dia.5 bar into the aligned holes in the transmission range switch body flange and on the tip of the manual control lever to position the transmission range switch body.


Picture 2

5. Use the adjusting nut to tighten the transaxle control cable to the specified torque.
Tightening torque: 9.5 ± 3.5 Nm (84 ± 30 in-lb)
6. Make sure that the selector lever is in the N range.
7. Make sure that the transaxle-side ranges that are corresponding to the transmission range operate and function without fail.

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Also, if the adjustment isn't the issue, confirm that the electrical connector to the switch is tight and free of corrosion.

Let me know if this helps.

Joe

Thanks, I've done the above steps. It did not matter. The other problem that existed and I had forgotten is; during of the driving RPM fluctuation until 60 km/h was jumped and after 60 km/h it was normal.

If the RPM's were jumping and the vehicle wasn't speeding up and down, it sounds like the transmission was slipping. However, that code is specific to the range sensor.

Let me know.

Joe

The vehicle was speeding up and down, but RPM till 60km/h had fluctuated.

That is the only code? Have you tried replacing the range switch?

Yes, only this sentence is displayed on the screen. In addition, in the cold start, the status display of the gear is constantly flashing. I just Cleaned the TRS. Transmission range senor wasn't replaced.

It sounds like the sensor is bad. Here is a continuity test you can try to test the switch. Take a look at the pictures for the sensor, pin location, and which pins should have continuity based on gear selection when checking.

Let me know if this helps or if you have other questions.

Joe

Hi, I already measured in different situations, but no resistance was shown.
Are you sure that the TRS is damaged?

If you have no resistance, the switch is bad. Did you show continuity?

Yes, continuity check with ohm meter.

If you got continuity at the correct points based on gear selection, then I'm wrong and the switch is not bad. That leads us to a diagnostic flow chart to help identify the issue. This is extensive, but it needs done. All attached pictures correlate with these directions.

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DTC P0705: Malfunction of Transmission Range Switch


Picture 1



Picture 2



Picture 3



Picture 4



Picture 5



Picture 6



DIAGNOSTIC FUNCTION

TCM monitors the signal from the transmission range switch, and determines if the abnormal input is present or not.

DESCRIPTIONS OF MONITOR METHODS

- TCM does not detects the transmission range switch input signal for 5 seconds when the vehicle speed is 1 km/h (0.6 mph) or more for 10 seconds continuously.
- TCM detects the multiple inputs from the transmission range switch for 2 seconds.

MONITOR EXECUTION

- Vehicle speed (no-transmission range switch signal input): 1km/h (0.6 mph) or more for 10 seconds continuously
- Vehicle speed (transmission range switch signal multiple input): No conditions
- Throttle valve opening: 1/8 or more
- Engine speed: 450 r/min or more

MONITOR EXECUTION CONDITIONS (OTHER MONITOR AND SENSOR)

Other Monitor (There is no temporary DTC stored in memory for the item monitored below)

- P0712, P0713: Malfunction of the transmission fluid temperature sensor
- P0715: Malfunction of primary pulley speed sensor
- P0720: Malfunction of secondary pulley speed sensor
- P0725: Malfunction of engine speed
- P0740: Malfunction of lockup solenoid valve
- P0745: Malfunction of line pressure solenoid valve
- P0840: Malfunction of secondary pressure sensor
- P1777: Malfunction of stepper motor
- U0001: Malfunction of CAN communication circuit
Sensor (The sensor below is determined to be normal)

- Primary pulley speed sensor
- Secondary pulley speed sensor

LOGIC FLOW CHARTS (Monitor Sequence-Input Other Rationality)


Picture 7


LOGIC FLOW CHARTS (Monitor Sequence-Input Open Circuit)


Picture 8


DTC SET CONDITIONS

Check Conditions

- Vehicle speed over 1 km/h (0.6 mph): 10 seconds or more.
- Throttle position sensor voltage: 1.37 volts or more.
- Engine speed: 450 r/min or more.
- Voltage of battery: 9 volts or more.
- Voltage of battery: 16 volts or less.
Judgment Criteria

- Transmission range switch: multiple signal. (2 seconds)
- Transmission range switch: no signal. (5 seconds)

OBD-II DRIVE CYCLE PATTERN

Transmission range: D (Drive the vehicle for 10 seconds or more while the accelerator opening angle is 20% or more)

PROBABLE CAUSES

- Malfunction of the transmission range switch
- Improper adjustment of transaxle control cable
- Damaged wiring harness and connectors
- Malfunction of TCM

DIAGNOSIS

STEP 1. Scan tool data list

Item 49: Transmission range switch

Check that the service data changes when the selector lever is moved to all ranges.

OK: The service data changes in response to the selector lever operation.

Q. Is the check result normal?

YES Intermittent malfunction
NO Go to Step 2.
STEP 2. Check the following connector:

- B-122 transmission range switch connector
- C-130 TCM connector

Check the terminals for a contact status problem and internal short circuit.

Q. Is the check result normal?

YES Go to Step 3.
NO Repair the defective connector.
STEP 3. Check for open circuit in wiring harness between the ETACS-ECU connector and the transmission range switch connector

Between the C-412 ETACS-ECU connector (terminal No.4) and the B-122 transmission range switch connector (terminal No.3)

NOTE:
Prior to the wiring harness inspection, check the intermediate connectors C-28 and A-17, and repair that if necessary.

Q. Is the check result normal?

YES Go to Step 4.
NO Repair the wiring harness.
STEP 4. Check for open circuit in the wiring harness between the transmission range switch connector and the TCM connector

- Between B-122 transmission range switch connector (terminal No.2) and C-130 TCM connector (terminal No.32)
- Between B-122 transmission range switch connector (terminal No.5) and C-130 TCM connector (terminal No.45)
- Between B-122 transmission range switch connector (terminal No.8) and C-130 TCM connector (terminal No.34)
- Between B-122 transmission range switch connector (terminal No.9) and C-130 TCM connector (terminal No.33)

NOTE:
Prior to the wiring harness inspection, check the intermediate connectors A-16 and A-17, and repair that if necessary.

Q. Is the check result normal?

YES Go to Step 5.
NO Repair the wiring harness.
STEP 5. Transmission range switch and control cable adjustment

Refer to See: Transmission Position Sensor/Switch, CVT > Adjustments > Transmission Range Switch and Control Cable Adjustment.

Q. Is the check result normal?

YES Go to Step 6.
NO Adjust the transmission range switch and control cable.
STEP 6. Transmission range switch continuity check

Refer to See: Transmission Position Sensor/Switch, CVT > Procedures > Transmission Range Switch Continuity Check.

Q. Is the check result normal?

YES Go to Step 7.
NO Replace the transmission range switch.
STEP 7. Symptom recheck after erasing diagnostic trouble code

Q. Is the check result normal?

YES Intermittent malfunction
NO Replace TCM.

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Let me know if this helps.

Take care,
Joe

Hi, continuity test for TRS (P,R,N,D ) was performed and results for all status equal 0.8 ohm,also continuity test from connector: B122 to connectors: A16,A17 was performed and there is no defect or loose connection.
I think TRS is good. Connectors is good.
I just replaced the gearbox fluid, but did not replace the filter
Question: What happens if the cavity inside the gearbox is blocked due to dirt
Note: The next thing I had forgotten:
When turning off the car in P mode: this alarm was appeared: immobilizer service required, In other cases(N,R and D modes), it will not happen when the car is turned off
Could you help me? I got too cluttered.

Please explain how to test the TCM or valve body with exploded view drawing.

The directions for testing and checking the TCM are all in the attached picture.

Let me know if this helps.

Joe

Where is location for terminal?
Could you please send location?
What meaning for battery positive voltage?
Do you mean 12 volts?

Welcome back:

The terminal is plugged into the TCM. As far as location, see picture 1. Battery voltage is just that, 12 volts.

Let me know if you have other questions.

Take care,
Joe

I started the car in the morning, but I could not change the gear, it did not release the mechanical latch, it was released by turning off the car and re-starting again.
The warning light came out when the car was turned on (Transmission service required).

I dismantled the key and cleaned it, its rotating parts were deprecated.

Welcome back:

Is it working properly now?

Joe

Yes, it is working properly now.

When I turn off the park mode, this alarm appears (immobilizer).
Since the engine's alarm has been displayed, the previous alarms (transmission ...) were not displayed.

Welcome back:

You know, about a year ago I went through a very similar situation on the same type of vehicle. I hate to say it, but if I recall correctly, the PCM had failed.

Do you mean ECU?

Will the problem be resolved with the update?

Where should I know if the ECU is broken?

If I warm my car in P mode for a few minutes, then no alarms appear.

I think A/T case inhibitor switch has problem.
Because by shift lever change at several times, the alarm did not appear.

Welcome back:

That is very possible.

Dear,
Could you please send to me exploded drawing for CVT gear box?
In start up less than 5 km/h gear box has noise, and after 5 km/h, its normal.

Welcome back:

I attached all components and the legends with descriptions. First you will see a picture. The legend which follows each picture correlates with the picture.

Let me know if you have other questions.

Joe

Thanks.The sound comes from the four wheel side(4WD part:from drive end )
The rear section of the gearbox.

One question: how to test sensors with digital multi-meter? for example O2 sensor, speed sensor, CVT sensors and etc. i need methods and data sheet for sensor test. Thanks

For example; I tested the sensor on the upper part of the gearbox, but did not show any value.

You've been teaching me how to test the transmission range switch and it was great.

Please inform the position of all sensors by mentioning the name.

Many thanks.

Welcome back:

Most all sensors are checked by testing for resistance. Here is a link that shows how to use a multi meter:

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-wiring

What sensor in particular do you want to test? There are sensors everywhere. lol Also, is there any way you could record the noise and upload it? I would be more than likely able to tell if it is from a sensor or not.

How to test CVT sensors ?

I tested CVT sensor (upstream sensor) with multi-meter (ohm check) but no data was appeared.

Welcome back:

I have attached information for testing all sensors / switches related to the CVT transmission. The first two are related to the shifter switch. Pictures 3,4, and 5 are for the range sensor. The next 4 pics are related to speed sensors and provide locations. The last three pics are for the CVT temp sensor. Here are the directions for testing.
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TRANSMISSION FLUID TEMPERATURE SENSOR CHECK

pic 6


1. While pressing A in the figure, turn B counterclockwise to unlock the CVT assembly connector, and disconnect the connector.


pic 7


2.
CAUTION:
Insert a thermometer which is made of metal or is put in a metal case (overall length: approximately 150 - 200 mm) into the transaxle case hole approximately 80 mm.

Remove the oil filler tube assembly (Refer to Transaxle Assembly), and insert a thermometer into the transaxle case hole.
NOTE:
If a radiation thermometer (noncontact thermometer) is available, use it to measure the surface temperature of the oil pan.

3. Measure the resistance between the sensor-side connector terminal No.17 of the CVT assembly connector and ground (terminal No.19).
Standard value:


pic 8


NOTE:
In the information screen on the multi-information display, the fluid temperature warning comes on when the transmission fluid temperature is approximately 140°C (284°F) or higher, and automatically goes out when the transmission fluid temperature dropped below approximately 137°C (279°F).

4.
CAUTION:
The transmission fluid temperature sensor cannot be removed or replaced as a single unit. When the transmission fluid temperature sensor needs to be replaced, replace the valve body assembly.

When the resistance of the transmission fluid temperature sensor is outside the standard value, and the fluid temperature warning comes on/goes out at other than the specified temperatures, replace the valve body assembly and the harness.

Let me know if they help.

Joe