Autodata - Diagnostic Trouble Codes Fault locations and probable causes - 2004 edition

How to use this manual
Find the model related chapter from vehicle manufacturer, model
name, engine code, year of manufacture and system.
Observe the following relevant test conditions:
All auxiliary equipment, including air conditioning, switched
OFF.
Ensure battery voltage above 11 volts.
Ensure earth wires in good condition.
If vehicle fitted with engine malfunction indicator lamp (MIL):
Check MIL operation - if MIL does not flash or illuminate,
replace bulb or repair circuit.
NOTE: If MIL remains illuminated or flashes, this indicates a
fault, but if it goes out there could still be trouble codes
logged in the ECM. Scan tool may not respond if MIL is
not working.
Engine at normal operating temperature.
Carry out road test.
Ensure overrun cut-off function operates several times.
Operate accelerator pedal several times over complete
travel range.
Allow engine to idle.
If engine does not start: Briefly crank engine and leave
ignition switched ON.
Observe any model specific information.
Find the location of the data link connector (DLC).
Bridge DLC terminals, connect an LED tester or scan tool,
as appropriate and observe any special conditions. If a scan
tool is used, follow the manufacturer's operating instructions.
Follow procedure for accessing trouble codes and note any
codes displayed.
NOTE: The trouble code may not identify the exact cause of any
problem, but serves as a guide to the component or
system to be investigated.
Refer to probable causes and carry out systematic check of
components and circuits until cause of problem is identified and
rectified. Refer to Autodata CD or engine management and pin
data manuals, for further test and diagnosis information.
NOTE: Where the probable cause is a non-specific engine fault,
fuel system or ignition system fault, refer to General
Trouble Shooter section.
Check for further trouble codes.
Follow procedure for erasing trouble codes.
NOTE: If the battery is disconnected to erase trouble codes, data
stored, such as radio security codes and ECM adaptive
memory may be lost.
Road test vehicle and recheck for any logged trouble codes.
If a trouble code is output, but not listed in the appropriate
code table, suspect a control module fault.
NOTE: In the case of signal or component malfunction, the ECM
will substitute a fixed value from its internal limited
operating strategy (LOS) software. This enables the
vehicle to be driven in limp-home mode until the fault can
be rectified. Depending on the component or circuit in
question, it may not be obvious to the driver that the
engine management system is operating in limp-home
mode.
Quick reference icon
Engine management Transmission Immobilizer
1 Quick reference icon I
I Engine identification code
I Manufacturer's
I system name
I
] Year 198695
I
I Ename code. ARD. BRD. BRE. BRF. BRT. BRV. B4B, B4C. R6A
Sy~tm. Ford CFllEEC IV 1
Engine rnanagemenVtmnsrnission
I
P
Data link connector (DLC)
iocation(s)
I system
I