DTC P07F6
DTC P07F6: 9th Gear Incorrect Ratio
General Description
The transmission control module (TCM) monitors gear ratio when shifting the gear. If the actual gear ratio is higher or lower than a specified value when shifted from 9th gear to other gear, and the condition occurs for a specified time, the TCM detects a malfunction and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type
| Execution | Continuous |
| Sequence | None |
| Duration | Depending on the driving conditions |
| DTC Type | One drive cycle, MIL on*, A/T gear position indicator blinks |
*: MIL comes on at second drive cycle
Enable Conditions
| Condition | Minimum | Maximum | |
|---|---|---|---|
| Engine speed [Engine Speed] | 400 rpm | - | |
| ATF temperature [ATF Temperature] | -40 °F (-40 °C) | - | |
| Shift position | D | ||
| Other | During shifting from 9th gear to other gear | ||
[ ]: HDS Parameter
Malfunction Threshold
The actual gear ratio is higher or lower than a specified value when shifted from 9th gear to other gear, and the condition occurs at least 5 times.
Possible Cause
The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
- Transmission internal failure
- Hydraulic control unit internal failure
Confirmation Procedure
Operating Condition
- 1.
Start the engine.
- 2.
Drive the vehicle, and let the transmission shift from 9th gear to other gear.
- Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.
With the HDS
None.
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected during the first drive cycle, the A/T gear position indicator blinks and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the TCM memory. If the malfunction returns in the next (second) drive cycle, the MIL comes on.
Conditions for clearing the DTC
The A/T gear 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.