Pinpoint Test AE : DTC P27B4, P27B5, P27B6
WARNING: This page is about a different car, the 2021 Ford Police Interceptor Utility. However, it is still accessible from the selected car via links, so may be relevant.
- Normal Operation and Fault Conditions
The PCM monitors clutch engagements and when a fault occurs a DTC is set in memory.
DTC Fault Trigger Conditions
DTC Description Fault Trigger Condition PCM P27B4:00 Internal Control Module Transmission Gear Direction Control Performance: No Sub Type Information The DTC sets if PCM detects clutch faults, or software errors. PCM P27B5:00 Internal Control Module Transmission Gear Ratio Control Performance: No Sub Type Information The DTC sets if PCM detects clutch faults, or software errors. PCM P27B6:00 Internal Control Module Transmission Speed Sensor Performance: No Sub Type Information The DTC sets if PCM detects clutch faults, a speed sensor fault or software error. Possible Sources
- Clutch faults that cause an engagement in N, R, or a forward gear in R, reverse in a forward gear, or clutch tie up
- Software error
- AE1 CHECK CORRECT GEAR STATE IS ACHIEVED
- Ignition ON.
- Using a diagnostic scan tool, monitor the PID, Transmission Range (TR) Sensor Position - Corrected.
- Select DRIVE.
Does the achieved gear range match the customer selected gear position?
Yes GO to AE2 No GO to Pinpoint Test C - AE2 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS)
- Ignition ON.
- Using a diagnostic scan tool, clear the DTC for the PCM.
- Wait 10 seconds.
- Using a diagnostic scan tool, carry out the PCM self-test.
Does DTC P27B4, P27B5, P27B6 return?
Yes If any TR DTCs are set resolve them first. If DTC P27B4, P27B5, P27B6 return by itself, Refer to PCM GUIDED ROUTINE TESTING .
After programming the new PCM, CARRY OUT the transmission strategy download. REFER to: Transmission Strategy Download .No The fault may be intermittent.