Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C175B-97 | Ground | |
C175B-99 | Ground |
Are the voltages within 0.5 volt of the recorded battery voltage?
Yes | REMOVE the fused jumper wire. GO to B9 |
|---|---|
No | REPAIR the affected circuit(s). |
B9 CHECK PCM (POWERTRAIN CONTROL MODULE) GROUND FOR HIGH RESISTANCE
NOTE: The following step will load test the circuit. A headlamp bulb would be an effective load. To avoid connector terminal damage, use the Flex Probe Kit for connector connections. Connect the load to a suitable 12 volt power connection. Connect the load to each circuit and measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C175B-5 | Ground | |
C175B-100 | Ground | |
C175B-102 | Ground | |
C175B-103 | Ground |
Is the voltage drop less than 0.5 volt?
Yes | GO to B10 |
|---|---|
No | REPAIR the affected circuit(s). |
B10 MONITOR THE SUPPLY VOLTAGE (VPWR) PID (PARAMETER IDENTIFICATION)
NOTE: Measure battery voltage at the battery. With the engine running at idle, turn off all accessory loads. Measure and record:
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
Using a diagnostic scan tool, view PCM PID VPWR and record. Momentarily accelerate the engine to Wide Open Throttle (WOT) and release. Repeat this step 4-5 times while continuing to monitor the PID .
Does the PID stay within 0.5 volt of the recorded battery voltage when the engine Revolutions Per Minute (RPM) are increased?
Yes | The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. INSPECT and REPAIR any connector or pin issues found. If no connector or pin issues are found, Perform the battery drain test. REFER to: Battery Drain Check (414-01 Battery, Mounting and Cables, General Procedures). |
|---|---|
No | GO to B12 |
B11 CHECK GENERATOR CLUTCH OPERATION
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.