Steering Wheel and Column Electrical Components — 2016 workshop reference 3386

Possible Causes

Battery voltage concern Fuse Wiring, terminals or connectors PATS concern FCIM (includes the ignition switch) BCM

Visual Inspection and Diagnostic Pre-checks

Inspect the battery and battery cables. Inspect BCM fuse 34 (30A).

PINPOINT TEST A : NO POWER IN ON

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

NOTE: Make sure there are no charging system concerns or low voltage Diagnostic Trouble Codes (DTCs) before diagnosing the ignition switch or ignition mode concern.

A1 CHECK VEHICLE BATTERY

Carry out the Battery Condition Test. REFER to: Battery (414-01 Battery, Mounting and Cables, Diagnosis and Testing).

Is the battery OK?

Yes	GO to A2
No	CORRECT the battery condition and VERIFY correct charging operation. Refer to the appropriate section in Group 414 for the procedure.

A2 CHECK FOR IGNITION ON MODE

NOTE: If DTC B108A:01, B108A:24 or B1142:29 is present, go to step A4. Press and release the START/STOP button while monitoring the ignition mode indicator at the top of the button.

Does the ignition mode indicator flash on and off continuously?

Yes	GO to A16
No	GO to A3

A3 CHECK FOR A PATS (PASSIVE ANTI-THEFT SYSTEM) CONCERN

Press the START/STOP button while monitoring the message center.

Does No key detected display in the message center?

Yes	REFER to: Passive Anti-Theft System (PATS) (419-01B Passive Anti-Theft System (PATS), Diagnosis and Testing).
No	GO to A4

A4 CHECK THE IGNITION SWITCH 1 (START_STOP_1) PID (PARAMETER IDENTIFICATION)

Using a diagnostic scan tool, view the BCM Parameter Identification (PIDs). Monitor the BCM PID START_STOP_1 while pressing and releasing the START/STOP button.

Does the PID change state when the START/STOP button is pressed and released?

Yes	GO to A11
No	GO to A5

A5 CHECK THE START/STOP 1 INPUT CIRCUIT FOR A SHORT TO VOLTAGE

Disconnect BCM C2280B. Disconnect FCIM C2402A. Disconnect PCM C175B, C1551B or C1381B. Measure:

Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C2402A-12		Ground

Is any voltage present?

Source reference 3386

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.