K121 CVT CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM P17029F AT Solenoids Operation Shutdown Circuit Stuck Off
DESCRIPTION
The ECM detects a malfunction in the current cut circuit used to transition to a fail-safe gear position.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|
| P17029F | AT Solenoids Operation Shutdown Circuit Stuck Off | Any of the following conditions is detected for 0.1 seconds or more during a solenoid current cut request with the ignition switch off (1-trip detection logic):
·
Shift solenoid valve SL1 actual current value is 0.3 A or higher. ·
Shift solenoid valve SL2 actual current value is 0.3 A or higher. ·
Shift solenoid valve SLU actual current value is 0.3 A or higher. ·
Shift solenoid valve SLP actual current value is 0.3 A or higher. ·
Shift solenoid valve SLS actual current value is 0.3 A or higher. ·
Shift solenoid valve SC1 actual current value is 0.3 A or higher. ·
Shift solenoid valve SC2 actual current value is 0.3 A or higher. ·
Shift solenoid valve SC3 actual current value is 0.3 A or higher. |
·
Transmission wire ·
Harness or connector ·
Transmission valve body assembly (shift solenoid valve SL1, SL2, SLU, SLP, SLS, SC1, SC2 or SC3) ·
ECM |
Comes on | Engine | B | SAE Code:
P1702 |
MONITOR DESCRIPTION
When the ignition switch is off and current is detected as flowing to the solenoid valve during a solenoid current cut request, the ECM stores a DTC.
CONFIRMATION DRIVING PATTERN
- HINT:
-
After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more. [*1]
- HINT:
-
[*1]: Normal judgment procedure.
-
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Turn the ignition switch to ON.
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
Input the DTC: P17029F.
Check the DTC judgment result.
| GTS Display | Description |
|---|---|
| NORMAL | ·
DTC judgment completed ·
System normal |
| ABNORMAL | ·
DTC judgment completed ·
System abnormal |
| INCOMPLETE | ·
DTC judgment not completed ·
Perform driving pattern after confirming DTC enabling conditions |
| N/A | ·
Unable to perform DTC judgment ·
Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit |
- HINT:
- ·
If the judgment result shows NORMAL, the system is normal.
·If the judgment result shows ABNORMAL, the system has a malfunction.
·If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- NOTICE:
- ·
Perform registration and/or initialization when parts related to the continuously variable transaxle system are replaced.
·Check that no DTCs are stored after performing initialization.
- HINT:
-
If any DTCs other than DTC P17029F are output, perform troubleshooting for those DTCs first.
PROCEDURE
Read the DTCs using the GTS.
- Powertrain > Engine > Trouble Codes
- 50001 372
- Result:
Result Proceed to Only P17029F is output A P17029F and other DTCs are output B
A
B
Pre-procedure1
Disconnect the C34 transmission wire connector.
Procedure1
| *a | Component without harness connected
(Transmission Wire) |
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition 2 (SL1+) - 7 (SL1-) 20°C (68°F) 5.0 to 5.6 Ω 3 (SL2+) - 8 (SL2-) 20°C (68°F) 5.0 to 5.6 Ω 4 (SLU+) - 9 (SLU-) 20°C (68°F) 5.0 to 5.6 Ω 5 (SLP+) - 10 (SLP-) 20°C (68°F) 5.0 to 5.6 Ω 15 (SLS+) - 20 (SLS-) 20°C (68°F) 5.0 to 5.6 Ω 14 (SC1) - Body ground 20°C (68°F) 11 to 15 Ω 13 (SC2) - Body ground 20°C (68°F) 11 to 15 Ω 18 (SC3) - Body ground 20°C (68°F) 11 to 15 Ω
- Result:
Proceed to OK NG
Post-procedure1
Connect the C34 transmission wire connector.
OK
NG
Pre-procedure1
Disconnect the C71 ECM connector.
Disconnect the C34 transmission wire connector.
Procedure1
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition C34-2 (SL1+) - C71-56 (SL1+) Always Below 1 Ω C34-7 (SL1-) - C71-57 (SL1-) Always Below 1 Ω C34-3 (SL2+) - C71-7 (SL2+) Always Below 1 Ω C34-8 (SL2-) - C71-6 (SL2-) Always Below 1 Ω C34-4 (SLU+) - C71-30 (SLU+) Always Below 1 Ω C34-9 (SLU-) - C71-31 (SLU-) Always Below 1 Ω C34-5 (SLP+) - C71-54 (SLP+) Always Below 1 Ω C34-10 (SLP-) - C71-55 (SLP-) Always Below 1 Ω C34-15 (SLS+) - C71-58 (SLS+) Always Below 1 Ω C34-20 (SLS-) - C71-59 (SLS-) Always Below 1 Ω C34-14 (SC1) - C71-3 (SC1) Always Below 1 Ω C34-13 (SC2) - C71-2 (SC2) Always Below 1 Ω C34-18 (SC3) - C71-1 (SC3) Always Below 1 Ω C34-2 (SL1+) or C71-56 (SL1+) - Body ground and other terminals Always 10 kΩ or higher C34-7 (SL1-) or C71-57 (SL1-)- Body ground and other terminals Always 10 kΩ or higher C34-3 (SL2+) or C71-7 (SL2+) - Body ground and other terminals Always 10 kΩ or higher C34-8 (SL2-) or C71-6 (SL2-)- Body ground and other terminals Always 10 kΩ or higher C34-4 (SLU+) or C71-30 (SLU+) - Body ground and other terminals Always 10 kΩ or higher C34-5 (SLP+) or C71-54 (SLP+) - Body ground and other terminals Always 10 kΩ or higher C34-10 (SLP-) or C71-55 (SLP-)- Body ground and other terminals Always 10 kΩ or higher C34-15 (SLS+) or C71-58 (SLS+) - Body ground and other terminals Always 10 kΩ or higher C34-20 (SLS-) or C71-59 (SLS-)- Body ground and other terminals Always 10 kΩ or higher C34-9 (SLU-) or C71-31 (SLU-)- Body ground and other terminals Always 10 kΩ or higher C34-14 (SC1) or C71-3 (SC1)- Body ground and other terminals Always 10 kΩ or higher C34-13 (SC2) or C71-2 (SC2)- Body ground and other terminals Always 10 kΩ or higher C34-18 (SC3) or C71-1 (SC3)- Body ground and other terminals Always 10 kΩ or higher
- Result:
Proceed to OK NG
Post-procedure1
Connect the C71 ECM connector.
Connect the C34 transmission wire connector.
OK
NG
- HINT:
-
for M20C-FKS:
-
for M20D-FKS:
- Result:
Proceed to NEXT
NEXT
for Registration: Click hereDrivetrain>K121 (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>REGISTRATION202304,999999,_52,_138176,_0584691,RM1000000029HF6,
for Initialization: Click hereDrivetrain>K121 (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>INITIALIZATION202304,202405,_52,_138176,_0584691,RM1000000029HF7,202405,202409,_52,_138176,_0584691,RM100000002JGMX,202409,999999,_52,_138176,_0584691,RM100000002NRHB,
- Result:
Proceed to OK NG
OK
NG
- Result:
Proceed to NEXT
NEXT
for Registration: Click hereDrivetrain>K121 (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>REGISTRATION202304,999999,_52,_138176,_0584691,RM1000000029HF6,
for Initialization: Click hereDrivetrain>K121 (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>INITIALIZATION202304,202405,_52,_138176,_0584691,RM1000000029HF7,202405,202409,_52,_138176,_0584691,RM100000002JGMX,202409,999999,_52,_138176,_0584691,RM100000002NRHB,