MAMUSTANG ATLASTHE ENTHUSIAST'S REFERENCE

2016 workshop · Body & Paint

Locks, Latches and Entry Systems

501-14 Handles, Locks, Latches and Entry Systems

2016 MustangReference 1,388 / 6,619HTML edition
← Chapter contentsProcedure contents

Left Front Door

Positive Lead

Measurement / Action

Negative Lead

C573-2

Ground

Click to display connectors

Right Front Door

Positive Lead

Measurement / Action

Negative Lead

C649-2

Ground

Is the resistance greater than 10,000 ohms?

Yes

GO to L4

No

GO to L3

L3 CHECK THE UNLOCK FEEDBACK CIRCUIT FOR A SHORT TO GROUND

Disconnect corresponding door latch. Measure:

Click to display connectors

Left Front Door

Positive Lead

Measurement / Action

Negative Lead

C573-2

Ground

Click to display connectors

Right Front Door

Positive Lead

Measurement / Action

Negative Lead

C649-2

Ground

Is the resistance greater than 10,000 ohms?

Yes

INSTALL a new door latch. REFER to: Front Door Latch (501-14 Handles, Locks, Latches and Entry Systems, Removal and Installation).

No

REPAIR the circuit.

L4 CHECK FOR VOLTAGE TO THE DOOR LOCK INDICATOR

Ignition ON. Measure:

Click to display connectors

Left Front Door

Positive Lead

Measurement / Action

Negative Lead

C573-6

Ground

Click to display connectors

Right Front Door

Positive Lead

Measurement / Action

Negative Lead

C649-6

Ground

Is the voltage greater than 11 volts?

Source reference 1388

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.