Pinpoint Tests AF: The Powertrain Malfunction (Wrench) Warning Indicator Is Never/Always On
Instrumentation, Message Center and Warning Chimes
Pinpoint Test AF: The Powertrain Malfunction (Wrench) Warning Indicator Is Never/Always On (Fusion/Milan Non-Hybrid)
Normal Operation
The Instrument Panel Cluster (IPC) receives the powertrain malfunction data from the PCM for the Electronic Throttle Control (ETC) status, from the Transmission Control Module (TCM) for the transaxle status and from the 4X4 control module for the All-Wheel Drive (AWD) status over the High Speed Controller Area Network (HS-CAN) communication bus.
When a fault condition exists in the ETC system, the PCM provides the IPC with a message to turn the powertrain malfunction (wrench) warning indicator on. When a fault condition exists in the transaxle, the TCM provides the IPC with a message to turn on the powertrain malfunction (wrench) indicator. When an AWD fault condition exists, the 4X4 control module sends the IPC a message to turn the powertrain malfunction (wrench) warning indicator on.
If the ETC status message is missing for less than 5 seconds, the powertrain malfunction (wrench) indicator remains in the last indication mode (on or off). If the ETC message is missing for greater than 5 seconds, the IPC sets DTC U0100:00 and defaults the powertrain malfunction (wrench) warning indicator on.
If the transaxle status message is missing for less than 5 seconds, the powertrain malfunction (wrench) indicator remains in the last indication mode (on or off). If the transaxle message is missing for greater than 5 seconds, the IPC sets DTC U0101:00 and defaults the powertrain malfunction (wrench) warning indicator on.
If the AWD status message is missing for less than 5 seconds, the powertrain malfunction (wrench) indicator remains in the last indication mode (on or off). If the AWD status message is missing for greater than 5 seconds, the IPC sets DTC U0102:00 and defaults the powertrain malfunction (wrench) warning indicator on.
This pinpoint test is intended to diagnose the following:
- ETC concern
- AWD concern
- Transaxle concern
- IPC
PINPOINT TEST AF: THE POWERTRAIN MALFUNCTION (WRENCH) WARNING INDICATOR IS NEVER/ALWAYS ON (FUSION/MILAN NON-HYBRID)
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AF1 CARRY OUT THE IPC INDICATOR LAMP CONTROL ACTIVE COMMAND USING THE SCAN TOOL
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: IPC DataLogger .
- Select the IPC powertrain malfunction (wrench) warning indicator (TRANSA_LMP) active command. Command the powertrain malfunction (wrench) warning indicator on and off while observing the powertrain malfunction (wrench) warning indicator.
- Does the powertrain malfunction (wrench) warning indicator illuminate when commanded on, and turn off when commanded off?
Yes
GO to AF2.
No
INSTALL a new IPC. REFER to Instrument Panel Cluster (IPC) Instrument Panel Cluster (IPC). TEST the system for normal operation.
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AF2 RETRIEVE THE RECORDED DTCs FROM THE IPC SELF-TEST
- Check for recorded DTCs from the IPC self-test.
- Are any DTCs recorded?
Yes
For DTC U0100:00, GO to Pinpoint Test BF. Pinpoint Tests BF: DTC U0100:00
For DTC U0101:00, GO to Pinpoint Test BG. Pinpoint Tests BG: DTC U0101:00
For DTC U0102:00, GO to Pinpoint Test BH. Pinpoint Tests BH: DTC U0102:00
For all other DTCs, REFER to DTC Charts. Instrumentation, Message Center and Warning Chimes
No
GO to AF3.
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AF3 RETRIEVE THE RECORDED DTCs FROM THE PCM KOEO SELF-TEST
- Check for recorded PCM DTCs from the Key ON Engine OFF (KOEO) self-test.
- Are any DTCs recorded?
Yes
DIAGNOSE all PCM DTCs. REFER to Computers and Control Systems Information.
No
GO to AF4.
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AF4 RETRIEVE THE RECORDED DTCs FROM THE TCM SELF-TEST
- Check for recorded TCM DTCs from the self-test.
- Are any DTCs recorded?
Yes
DIAGNOSE all TCM DTCs. REFER to Computers and Control Systems Information.
No
DIAGNOSE all 4X4 control module DTCs. REFER to Four Wheel Drive (4WD) Systems [1][2]Diagnostic Trouble Code Descriptions.
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