Code No.P1767 (P0720): Output shaft speed sensor system
![](../../../img/23/AC609170AB00ENG.png)
![](../../../img/23/AC607094AC00ENG.png)
![](../../../img/23/AC607558AD00ENG.png)
![](../../../img/23/AC607560AG00ENG.png)
![](../../../img/23/AC607563BR00ENG.png)
![](../../../img/23/AC607569BS00ENG.png)
![](../../../img/23/AC607563AV00ENG.png)
![](../../../img/23/AC607569AX00ENG.png)
![](../../../img/23/AC607567AI00ENG.png)
![](../../../img/23/AC607609AH00ENG.png)
![](../../../img/23/AC607564AX00ENG.png)
![](../../../img/23/AC607571AX00ENG.png)
OPERATION
The output shaft speed sensor detects the speed of the
direct planetary carrier, and sends the information to the ECU as a pulse
signal.
DIAGNOSIS CODE SET CONDITIONS
If the output pulse from the output
shaft speed sensor has been lost for one second or more while the vehicle is
being driven, it is judged that there is an open circuit or short circuit in
the output shaft speed sensor, and diagnosis code No.P1767 (P0720) is
set.
If the code No.P1767 (P0720) is set four times, the transmission will
be fixed in 3rd gear as a fail-safe measure. However, the transmission can be
downshifted to 2nd gear by operating the selector lever.
PROBABLE CAUSES
- Malfunction of output shaft speed sensor
- Malfunction of output shaft <4A/T>
- Malfunction of direct planetary carrier <5A/T>
- Damaged harness wires and connectors
- Malfunction of the A/T-ECU <4M4>
- Malfunction of the engine-A/T-ECU <6G7>
|
STEP 1. M.U.T.-III data list
|
|
Item 6: Output shaft speed sensor (Refer to
data list reference table ).
|
|
Q.
Is the check result normal?
|
|
Intermittent malfunction (Refer to
GROUP 00 - How to Cope with Intermittent Malfunction ).
|
|
|
|
Go to Step 2.
|
|
|
|
STEP 2. Connector check: C-07 output shaft speed sensor
connector
|
|
Check for the contact with terminals.
|
|
Q.
Is the check result normal?
|
|
Go to Step 3.
|
|
|
|
Repair
the defective connector.
|
|
|
|
STEP 3. Measure the resistance at output shaft speed sensor connector
C-07.
|
|
Disconnect the connector, and measure the
resistance between terminal 1 and earth at the wiring harness
side.
|
|
OK: Continuity (Less than 2
Ω)
|
|
Q.
Is the check result normal?
|
|
Go to Step 9.
|
|
|
|
Go to Step 4.
|
|
|
|
STEP 4. Measure the voltage at A/T-ECU connector D-38
<4M4> or engine-A/T-ECU connector D-216
<6G7>.
|
|
(1)Connect output shaft speed sensor connector C-07.
|
|
(2)Turn the ignition switch to the ON position.
|
|
(3)Measure the voltage between A/T-ECU connector D-38
terminal No.43 <4M4> and earth or engine-A/T-ECU connector
D-216 terminal No.88 <6G7>. OK: 0.5 V or
less
|
|
Q.
Is the check result normal?
|
|
Go to Step 7.
|
|
|
|
Go to Step 5.
|
|
|
|
STEP 5. Connector check: D-38 A/T-ECU connector <4M4>
or D-216 engine-A/T-ECU connector <6G7>
|
|
Check for the contact with terminals.
|
|
Q.
Is the check result normal?
|
|
Go to Step 6.
|
|
|
|
Repair
the defective connector.
|
|
|
|
STEP 6. M.U.T.-III data list
|
|
Item 6: Output shaft speed sensor (Refer to
data list reference table ).
|
|
Q.
Is the check result normal?
|
|
Intermittent malfunction (Refer to
GROUP 00 - How to Cope with Intermittent Malfunction ).
|
|
|
|
Replace the A/T-ECU
<4M4> or engine-A/T-ECU <6G7>.
|
|
|
|
STEP 7. Connector check: D-225 intermediate connector, D-111 J/C (5)
<6G7>, D-38 A/T-ECU connector <4M4> or D-216
engine-A/T-ECU connector <6G7>
|
|
Check for the contact with terminals.
|
|
Q.
Is the check result normal?
|
|
Go to Step 8.
|
|
|
|
Repair
the defective connector.
|
|
|
|
STEP 8. Check the harness between output shaft speed sensor connector
C-07 terminal No.1 and A/T-ECU connector D-38 terminal No.43
<4M4> or engine-A/T-ECU connector D-216 terminal No.88
<6G7>.
|
|
Check the earth line for open circuit.
|
|
Q.
Is the check result normal?
|
|
Go to Step 6.
|
|
|
|
Repair
the wiring harness.
|
|
|
|
STEP 9. Measure the voltage at output shaft speed sensor connector
C-07.
|
|
(1)Disconnect the connector, and measure the voltage between
terminal 3 and earth at the wiring harness side.
|
|
(2)Turn the ignition switch to the ON
position. OK: System voltage
|
|
Q.
Is the check result normal?
|
|
Go to Step 12.
|
|
|
|
Go to Step 10.
|
|
|
|
STEP 10. Connectors check: D-401 J/B connector, D-225 and D-229
intermediate connector
|
|
Check for the contact with terminals.
|
|
Q.
Is the check result normal?
|
|
Go to Step 11.
|
|
|
|
Repair
the defective connector.
|
|
|
|
STEP 11. Check the harness between output shaft speed sensor connector
C-07 terminal No.3 and junction block connector D-401 terminal
No.12.
|
|
Check the power supply line for short or open
circuit.
|
|
Q.
Is the check result normal?
|
|
Go to Step 6.
|
|
|
|
Repair
the wiring harness.
|
|
|
|
STEP 12. Measure the voltage at output shaft speed sensor connector
C-07.
|
|
(1)Disconnect the connector, and measure the voltage between
terminal 2 and earth at the wiring harness side.
|
|
(2)Turn the ignition switch to the ON
position. OK: 4.5 - 4.9 V
|
|
Q.
Is the check result normal?
|
|
Go to Step 18.
|
|
|
|
Go to Step 13.
|
|
|
|
STEP 13. Measure the voltage at A/T-ECU connector D-38
<4M4> or engine-A/T-ECU connector D-216
<6G7>.
|
|
(1)Disconnect output shaft speed sensor connector
C-07.
|
|
(2)Turn the ignition switch to the ON position.
|
|
(3)Measure the voltage between A/T-ECU connector D-38
terminal No.32 <4M4> and earth or engine-A/T-ECU connector
D-216 terminal No.73 <6G7> and earth. OK: 4.5
- 4.9 V
|
|
Q.
Is the check result normal?
|
|
Go to Step 16.
|
|
|
|
Go to Step 14.
|
|
|
|
STEP 14. Connector check: D-225 intermediate connector, D-111 J/C (5)
<6G7>, D-38 A/T-ECU connector <4M4> or D-216
engine-A/T-ECU connector <6G7>
|
|
Check for the contact with terminals.
|
|
Q.
Is the check result normal?
|
|
Go to Step 15.
|
|
|
|
Repair
the defective connector.
|
|
|
|
STEP 15. Check the harness between output shaft speed sensor connector
C-07 terminal No.2 and A/T-ECU connector D-38 terminal No.32
<4M4> or engine-A/T-ECU connector D-216 terminal No.73
<6G7>.
|
|
Check the output line for short
circuit.
|
|
Q.
Is the check result normal?
|
|
Go to Step 6.
|
|
|
|
Repair
the wiring harness.
|
|
|
|
STEP 16. Connector check: D-225 intermediate connector, D-111 J/C (5)
<6G7>, D-38 A/T-ECU connector <4M4> or D-216
engine-A/T-ECU connector <6G7>
|
|
Check for the contact with terminals.
|
|
Q.
Is the check result normal?
|
|
Go to Step 17.
|
|
|
|
Repair
the defective connector.
|
|
|
|
STEP 17. Check the harness between output shaft speed sensor connector
C-07 terminal No.2 and A/T-ECU connector D-38 terminal No.32
<4M4> or engine-A/T-ECU connector D-216 terminal No.73
<6G7>.
|
|
Check the output line for open
circuit.
|
|
Q.
Is the check result normal?
|
|
Go to Step 6.
|
|
|
|
Repair
the wiring harness.
|
|
|
|
STEP 18. Measure the output wave pattern of the output shaft speed
sensor at A/T-ECU connector D-38 <4M4> or engine-A/T-ECU
connector D-216 <6G7> (using an oscilloscope).
|
|
(1)Shift the selector lever to the D range.
|
|
(2)Accelerate the vehicle to approximately 50 km/h
(shift range; 3rd.)
|
|
(3)Connect an oscilloscope, and measure the voltage between
A/T-ECU connector D-38 terminal No.32 <4M4> and earth or
engine-A/T-ECU connector D-216 terminal No.73 <6G7> and
earth. OK: A wave pattern such as the one shown on (Check Procedure Using an
Oscilloscope) should be output, and the maximum value should be 4.8 V or
more and the minimum value should be 0.8 V or less. There should be no
noise in the output wave pattern.
|
|
Q.
Is the check result normal?
|
|
Go to Step 6.
|
|
|
|
Go to Step 19.
|
|
|
|
STEP 19. Connector check: D-38 A/T-ECU connector <4M4> or
D-216 engine-A/T-ECU connector <6G7>
|
|
Check for the contact with terminals.
|
|
Q.
Is the check result normal?
|
|
Go to Step 20.
|
|
|
|
Repair
the defective connector.
|
|
|
|
STEP 20. Replace the output shaft speed sensor and then recheck the
diagnosis code.
|
|
(1)Replace the output shaft speed sensor.
|
|
(2)Test drive the vehicle.
|
|
(3)Check if the diagnosis code is set.
|
|
Q.
Is diagnosis code P1767 (P0720) set?
|
|
Go to Step 21.
|
|
|
|
The
inspection is complete.
|
|
|
|
STEP 21. Check the output shaft <4A/T> or direct planetary
carrier <5A/T>.
|
|
Visually check the output shaft
<4A/T> or direct planetary carrier <5A/T> for
damage.
|
|
Q.
Is the check result normal?
|
|
Eliminate the cause of the
noise.
|
|
|
|
Replace the output shaft
<4A/T> or direct planetary carrier <5A/T>.
|
|
|