MAMUSTANG ATLASTHE ENTHUSIAST'S REFERENCE

2016 workshop · Electrical Distribution

Communications Network

418-00 Module Communications Network

2016 MustangReference 5,932 / 6,619HTML edition
← Chapter contentsProcedure contents

Yes

GO to AD10

No

GO to AD9

AD9 CHECK THE HS-CAN1 (HIGH SPEED-CONTROLLER AREA NETWORK 1) (+) AND HS-CAN1 (HIGH SPEED-CONTROLLER AREA NETWORK 1) (-) CIRCUITS FOR AN OPEN

Measure:

Click to display connectors

Positive Lead

Measurement / Action

Negative Lead

C251-6

C251-14

Is the resistance greater than 10,000 ohms?

Yes

REPAIR the DLC or REPAIR the circuit in question.

No

A capacitor internal to a module can still be draining, causing irregular resistance readings. WAIT 5 minutes. REPEAT the pinpoint test. If the concern is still present, REPAIR the circuit.

AD10 CHECK THE HS-CAN1 (HIGH SPEED-CONTROLLER AREA NETWORK 1) (+) AND HS-CAN1 (HIGH SPEED-CONTROLLER AREA NETWORK 1) (-) CIRCUITS FOR A SHORT TOGETHER WITH THE MODULES DISCONNECTED

Measure:

Click to display connectors

Positive Lead

Measurement / Action

Negative Lead

C251-6

C251-14

Disconnect modules one at a time until the resistance is greater than 3 ohms.

APIM (if equipped) C2383 or C2342 (touchscreen display) BCM C2280G ICM C2114 (if equipped) PCM C1551B (2.3L), C1381B (3.7L) or C175B (5.0L, 5.2L)

Did the resistance change to greater than 3 ohms with one of the modules disconnected?

Yes

For the APIM, GO to AD21 For the BCM, GO to AD20 For the ICM, GO to AD22 For the PCM, GO to AD19

No

REPAIR the circuit in question. CONNECT all modules.

AD11 CHECK THE HS-CAN1 (HIGH SPEED-CONTROLLER AREA NETWORK 1) (+) AND HS-CAN1 (HIGH SPEED-CONTROLLER AREA NETWORK 1) (-) CIRCUITS FOR A SHORT TO GROUND WITH THE MODULES DISCONNECTED

Measure:

Click to display connectors

Positive Lead

Measurement / Action

Negative Lead

Source reference 5932

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.