Circuit Description
The transmission control module (TCM) continually performs a series of processing steps, known as a processing loop, during normal operation. The TCM must complete the processing loop within a specific time limit. The TCM will set if it does not complete two consecutive loops inside a predetermined time interval.
DTC P0613 is a type C DTC.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC P0613 Transmission Control Module (TCM) Processor
Conditions for Running the DTC
| • | The components are powered and ignition voltage is greater than 9 volts and less than 18 volts. |
| • | This test is run during the entire ignition cycle. |
Conditions for Setting the DTC
DTC P0613 sets if the TCM does not complete two processing loops within the allotted time.
Action Taken When the DTC Sets
| • | The TCM does not illuminate the malfunction indicator lamp (MIL). |
| • | The TCM commands all transmission solenoids to OFF. |
| • | DTC P0613 is stored in TCM history. |
| • | The TCM freezes shift adapts. |
| • | The TCM inhibits torque converter clutch (TCC) engagement. |
Conditions for Clearing the MIL/DTC
A scan tool can clear the code from TCM history. The TCM automatically clears the DTC from TCM history if the vehicle completes 40 warm-up cycles without failure.
Test Description
The numbers below refer to the step numbers on the diagnostic table.
Step | Action | Value | Yes | No |
|---|---|---|---|---|
Schematic Reference: Automatic Transmission Controls Schematics | ||||
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | |
Important: Before clearing the DTC, use the scan tool in order to record the Freeze Frame and Failure Records for reference. The Clear Info function will erase the data. Is voltage within the specified value? | B+ | Go to Step 3 | Go to Step 4 | |
3 | Start the engine and observe the charge indicator on the instrument cluster. Refer to Charging System Test . Does the charge indicator display voltage higher than the specified value? | 18 V | Go to Step 5 | Go to Step 6 |
Replace the battery, or resolve the battery condition. Refer to Battery Inspection/Test . Did you resolve the condition or complete the replacement? | -- | Go to Step 6 | -- | |
5 | Repair the charging system. Refer to Charging System Test or Generator Replacement . Did you complete the repair? | -- | Go to Step 6 | -- |
6 | Perform the following procedure in order to verify the repair:
Has the test run and passed? | -- | Go to Step 7 | Go to Step 2 |
7 | With the scan tool, observe the stored information, capture info, and DTC Info. Does the scan tool display any DTCs that you have not diagnosed? | -- | System OK | |
