Communication network (vehicles up to 08.2001) — diagnostics and checks (Focus 1)

Contents: Inspection and verification ↳ Table of signs of malfunction ↳

Inspection and verification

1. Check the customer complaint.

2. Check for the following faults.

Visual inspection

Electrical factors:

Module(s)
Wiring
Loose or corroded connectors

3. If the malfunctions persist after the problems identified by visual inspection have been corrected, determine the symptoms of the malfunctions and refer to the Symptoms Table

Table of signs of malfunction

State	Possible Causes	Action
•The airbag module does not respond to FDS 2000 system requests	•Airbag module. •Wiring.	•Proceed to System Check A.
•The Electronic Stability Program (ESP) module does not respond to FDS 2000 system requests	•Electronic Stability Program (ESP) module. •Wiring.	•Proceed to System Check B.
•The steering wheel position sensor does not respond to FDS 2000 system requests	•Steering wheel position sensor. •Wiring.	•Proceed to System Check C.
•The trip computer module does not respond to FDS 2000 system requests	•Trip computer module. •Wiring.	•Proceed to System D check.
•The additional heater does not respond to requests from the FDS 2000 system	•Additional heater •Wiring.	•Proceed to System Check E.
•Radio/Road Communication System Module does not respond to FDS 2000 system requests	•Radio/road communication system module. •Wiring.	•Proceed to System F check.
•ABS module does not respond to FDS 2000 system requests	•ABS module. •Wiring.	•Fault detection is performed by the FDS 2000 system.
•The ABS module with TCS does not respond to FDS 2000 system requests	•ABS module with TCS. •Wiring.	•Fault detection is performed by the FDS 2000 system.
•All Engines: Powertrain Control Module (PCM) Not Responding to FDS 2000 System Requests	•Powertrain Control Module (PCM) •Wiring.	•Fault detection is performed by the FDS 2000 system.
•The instrument cluster does not respond to FDS 2000 system requests	•Instrument panel. •Wiring.	•Fault detection is performed by the FDS 2000 system.
•The central timer module does not respond to FDS 2000 system requests	•Central timer module. •Wiring.	•Fault detection is performed by the FDS 2000 system.
•The anti-theft alarm/double door lock module does not respond to FDS 2000 system requests	•Anti-theft alarm module / double door locking •Wiring.	•Fault detection is performed by the FDS 2000 system.