DTC P0658, P0659
DTC P0658: Actuator Supply Voltage A Circuit Low DTC P0659: Actuator Supply Voltage A Circuit High
General Description
The actuator supply voltage is for the power to drive the CPU in the transmission control module (TCM). From the perspective of a fail-safe, three systems (VB1, VB2, and VB3) of the power supply lines are secured. They also have a role to supply power to the clutch pressure control solenoid valves and the shift solenoid valves. The TCM monitors whether the VB1 voltage is in a normal range by the CPU. If the VB1 voltage is a specified value for a set time, the TCM detects a malfunction and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type
| Execution | Continuous |
| Sequence | None |
| Duration* | 500 milliseconds or more |
| Duration** | 600 milliseconds or more |
| DTC Type | One drive cycle, MIL on, Shift position indicator blinks |
*: DTC P0658
**: DTC P0659
Enable Conditions
| Condition | Minimum | Maximum |
|---|---|---|
| Elapsed time after the vehicle condition is turned to the OFF (LOCK) mode** | 30 seconds | - |
[ ]: HDS Parameter
| Condition | Minimum | Maximum |
|---|---|---|
| 12 volt battery voltage [Battery Voltage] | 10 V | - |
| Vehicle | ON mode | |
| Other* | Fail-safe switch is on (actuator power supplied state) | |
[ ]: HDS Parameter
Malfunction Threshold
DTC: P0658
The VB1 voltage is 5.6 V or less for at least 500 milliseconds.
DTC: P0659
The VB1 voltage is 7.2 V or more for at least 600 milliseconds.
Possible Cause
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
DTC: P0658
- TCM VB1 line open (include fuse blown)
- TCM VB1 line short to ground
DTC: P0659
- Fail-safe switch stuck on
Common
- TCM internal circuit failure
Confirmation Procedure
Operating Condition
DTC: P0658
Turn the vehicle to the ON mode, and wait for at least 5 seconds.
DTC: P0659
- Turn the vehicle to the ON mode.
- Turn the vehicle to the OFF (LOCK) mode, and wait for at least 30 seconds.
- Turn the vehicle to the ON mode, and wait for several seconds.
With the HDS
None.
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected, the MIL comes on, the shift position indicator blinks, and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the TCM memory.
Conditions for clearing the DTC
The shift position indicator comes off by turning the vehicle to the OFF (LOCK) mode. The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command.