DTC P172A
DTC P172A : KEY-Release Wake-up Output Circuit Malfunction
General Description
At the condition the vehicle is in OFF (LOCK) mode, the SBW shifter control module in the SBW shifter assembly turns the MTR_CUT2(IG1) output to ON (12 V) when the key release switch is pressed once. The SBW shifter control module monitors the return signal of the MTR_CUT2(IG1) output, and when the return signal and MTR_CUT2(IG1) output does match for a specified duration, the powertrain control module (PCM) receives malfunction from the SBW shifter control module and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type
| Execution | Continuous |
| Sequence | None |
| Duration | 2 seconds or more |
| DTC Type | One drive cycle, MIL off, shift position indicator off |
Enable Conditions
| Condition | ||
|---|---|---|
| Vehicle | ON mode | |
Malfunction Threshold
The return signal is abnormal for at least 2 seconds when the MTR_CUT2(IG1) outputs OFF.
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.
- SBW shifter control module MTR_CUT2(IG1) line short to power
- SBW shifter assembly (SBW shifter control module) internal failure
- Body control module internal failure
Confirmation Procedure
Operating Condition
Turn the vehicle to the ON mode, and wait for at least 10 seconds.
With the HDS
None.
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected, a Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM memory. The MIL does not come on and the shift position indicator does not blink.
Conditions for clearing the DTC
The Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the 12 volt battery.