Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM100000001D0XX |
Model Year Start: 2019 |
Model: Corolla Hatchback |
Prod Date Range: [06/2018 -
] |
Title: K120 / K121 (CVT): K120 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: P17029F; AT Solenoids Operation Shutdown Circuit Stuck Off; 2019 - 2025 MY Corolla Corolla Hatchback [06/2018 - ] |
DTC
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P17029F
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AT Solenoids Operation Shutdown Circuit Stuck Off
|
DESCRIPTION
The TCM continuously monitors its CPU. If the output of the CPU deviates from the standard, the TCM will illuminate the MIL and store this DTC.
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
MIL
|
Memory
|
Note
|
P17029F
|
AT Solenoids Operation Shutdown Circuit Stuck Off
|
TCM main CPU malfunction (1 trip detection logic)
|
TCM
|
Comes on
|
DTC stored
|
SAE Code:
P1702
|
MONITOR DESCRIPTION
The TCM monitors the current flow to the shift solenoid valves. When the engine switch is on (IG), if the TCM detects that current is flowing to the shift solenoid valves even though current cut was requested, it will store this DTC.
MONITOR STRATEGY
Related DTCs
|
P1702: TCM processor performance
|
Required sensors/Components
|
TCM
|
Frequency of operation
|
Once per driving cycle
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Duration
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2 times
|
MIL operation
|
Immediate
|
Sequence of operation
|
None
|
TYPICAL ENABLING CONDITIONS
The monitor will run whenever the following DTCs are not stored
|
None
|
Engine switch
|
OFF to ON
|
TYPICAL MALFUNCTION THRESHOLDS
Actuator cut circuit check
|
Fail
|
CONFIRMATION DRIVING PATTERN
-
Connect the Techstream to the DLC3.
-
Turn the engine switch on (IG) and turn the Techstream on.
-
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
-
Turn the engine switch off and wait for 2 minutes or more.
-
Turn the engine switch on (IG) 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.
-
Enter the following menus: Powertrain / Transmission / Utility / All Readiness.
-
Input the DTC: P17029F.
-
Check the DTC judgment result.
Techstream 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.
CAUTION / NOTICE / HINT
PROCEDURE
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Clear the DTCs.
Powertrain > Transmission > Clear DTCs
HINT:
Write down the currently output DTCs before clearing them.
(e) Turn the engine switch off.
NEXT
|
|
|
2.
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CHECK DTC OUTPUT (DTC P17029F)
|
(a) Disconnect the cable from the negative (-) battery terminal and wait for 1 minute.
(b) Connect the cable to the negative (-) battery terminal.
(c) Turn the engine switch on (IG) and wait for 1 minute or more.
(d) Turn the engine switch off and wait for 2 minutes or more.
HINT:
This DTC is detected after the engine switch is turned off.
(e) Connect the Techstream to the DLC3.
(f) Turn the engine switch on (IG).
(g) Turn the Techstream on.
(h) Enter the following menus: Powertrain / Transmission / Trouble Codes.
Powertrain > Transmission > Trouble Codes
(i) Read the DTCs using the Techstream.
Result
|
Proceed to
|
DTCs are not output
|
A
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DTC P17029F is output
|
B
|
B
|
|
|
(a) Replace the TCM.
Click here
|