A8 CHECK THE BPP (BRAKE PEDAL POSITION) SWITCH CIRCUIT FOR VOLTAGE AT THE PCM (POWERTRAIN CONTROL MODULE)
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C175B-67 | Ground |
Is the voltage greater than 11 volts?
Yes | GO to A28 |
|---|---|
No | REPAIR the circuit. |
A9 CHECK BCM (BODY CONTROL MODULE) IGN_SW_STATE PID (PARAMETER IDENTIFICATION)
Using a diagnostic scan tool, view the BCM Parameter Identifications (PIDs). Make sure the transmission is in PARK or NEUTRAL. Monitor the BCM PID IGN_SW_STATE while pressing the engine start/stop switch and the brake pedal.
Does the PID change from Off to Start when the ignition switch - push button start and brake pedal are pressed?
Yes | GO to A10 |
|---|---|
No | DIAGNOSE No power in ON. REFER to: Steering Wheel and Column Electrical Components (211-05 Steering Wheel and Column Electrical Components, Diagnosis and Testing). |
A10 CHECK THE PCM (POWERTRAIN CONTROL MODULE) IN GEAR-TRANSMISSION IS APPLYING A LOAD TO ENGINE (IN_GEAR) PID (PARAMETER IDENTIFICATION)
Using a diagnostic scan tool, view the PCM Parameter Identifications (PIDs). Monitor the PCM PID IN_GEAR, while placing the gear selector in PARK and then NEUTRAL.
Does the PID read No in both positions?
Yes | GO to A12 |
|---|---|
No | REFER to: Diagnostic Trouble Code (DTC) Charts and Pinpoint Tests - 5.0L 32V Ti-VCT (307-01 Automatic Transmission - 6-Speed Automatic Transmission - 6R80, Diagnosis and Testing). |
A11 CHECK THE PCM (POWERTRAIN CONTROL MODULE) CLUTCH PEDAL AT OR NEAR BOTTOM OF TRAVEL (CPP_BOT) PID (PARAMETER IDENTIFICATION)
Using a diagnostic scan tool, while viewing the PCM PID CPP_BOT, fully apply the clutch pedal and release.
Does the PID change from NO to YES when the clutch pedal is fully applied?
Yes | GO to A12 |
|---|---|
No | GO to A23 |
A12 CHECK THE PCM (POWERTRAIN CONTROL MODULE) ENGINE CRANKING (ENG_CRANK) PID (PARAMETER IDENTIFICATION)
Make sure the transmission is in PARK or NEUTRAL. Using a diagnostic scan tool, view the PCM Parameter Identifications (PIDs). Monitor the PCM PID ENG_CRANK while pressing the engine start/stop switch and the brake pedal (with automatic transmission) or fully apply the clutch pedal (with manual transmission).
Does the PID change from Inactive to Active?
Yes | GO to A13 |
|---|---|
No | GO to A28 |
A13 CHECK THE STARTER RELAY CONTROL OPERATION
NOTICE: The following step uses a test light to simulate normal circuit loads. To avoid connector terminal damage, use the Flex Probe Kit for the test light probe connection to the vehicle. Do not use the test light probe directly on any connector. Remove the BJB starter relay. Measure:
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.