No | CHECK the A/C system for leaks. REFER to: Electronic Leak Detection (412-00 Climate Control System - General Information, General Procedures). REFER to: Fluorescent Dye Leak Detection (412-00 Climate Control System - General Information, General Procedures). After the leak is repaired, RECHARGE the A/C system. REFER to: Air Conditioning (A/C) System Recovery, Evacuation and Charging (412-00 Climate Control System - General Information, General Procedures). |
|---|
G2 CHECK THE COMMUNICATION NETWORK
Ignition ON. Using a diagnostic scan tool, carry out the network test.
Do the FCIM and the PCM pass the network test?
Yes | GO to G3 | |
|---|---|---|
No | DIAGNOSE the FCIM or PCM does not communicate with the diagnostic scan tool. REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing). | |
G3 CHECK THE PCM (POWERTRAIN CONTROL MODULE) A/C (AIR CONDITIONING) PRESSURE SENSOR (ACP_PRESS) PID (PARAMETER IDENTIFICATION)
Ignition ON. Using a diagnostic scan tool, view PCM Parameter Identifications (PIDs). With a manifold gauge set connected, compare the pressure readings of the manifold gauge set and the PCM ACP_PRESS PID.
Are the pressure values of the manifold gauge set and the ACP_PRESS PCM PID within ± 103 kPa (15 psi)?
Yes | GO to G4 | |
|---|---|---|
No | DIAGNOSE the A/C pressure transducer. GO to Pinpoint Test A | |
G4 ELECTRIC COOLING FAN FUNCTIONAL CHECK
Ignition ON. Using a diagnostic scan tool, carry out the PCM KOEO self-test.
Does the electric cooling fan operate during the KOEO self-test?
Yes | GO to G5 | |
|---|---|---|
No | DIAGNOSE the electric cooling fan operation. REFER to Powertrain Control/Emissions Diagnosis (PC/ED) manual, Section 3 Symptom Charts. | |
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.