Ford 2003 Mustang Workshop Manual page 3267

Engine coolant level
Accessory drive belt
Engine oil level
Parking brake position switch
Brake fluid level
Boost gauge pressure line
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible)
before proceeding to the next step.
4. If the concern remains after the inspection, connect the diagnostic tool to the data link connector
(DLC) located beneath the instrument panel and select the vehicle to be tested from the
diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
check that the program card is correctly installed.
check the connections to the vehicle.
check the ignition switch position.
5. If the diagnostic tool still does not power up, refer to the diagnostic tool operating manual.
6. Carry out the DATA LINK DIAGNOSTICS test. If the diagnostic tool responds with:
CKT914, CKT915 OR CKT70 = ALL ECUS NO RESP/NOT EQUIP, refer to
00 .
NO RESP/NOT EQUIP for the instrument cluster,
generic electronic module (GEM),
SYSTEM PASSED, retrieve and record the continuous diagnostic trouble codes (DTCs),
erase the continuous DTCs and carry out the self-test diagnostics for the instrument
cluster or the GEM.
7. If the DTCs retrieved are related to the concern, go to the Instrument Cluster Diagnostic Trouble
Code (DTC) Index or the GEM Diagnostic Trouble Code Index to continue diagnostics.
8. If no DTCs related to the concern are retrieved, proceed to the Symptom Chart to continue
diagnostics.
Instrument Cluster Self-Diagnostic Mode
To enter the instrument cluster self-diagnostic mode, press and hold the instrument cluster
SELECT/RESET button, turn the ignition switch to the RUN position, and then continue pressing the
SELECT/RESET button (five seconds) until tESt is displayed in the odometer. The SELECT/RESET
button must be released within three seconds of the odometer tESt display to begin the self-diagnostic
mode. Press the SELECT/RESET button to advance through the following steps until dtc is displayed.
Depressing the SELECT/RESET button will display any stored continuous DTCs before proceeding to
the next step.
5 (15A)
7 (15A)
11 (15A)
13 (15A)
21 (5A)
23 (15A)
24 (30A)
29 (15A)
30 (15A)
32 (15A)
34 (20A)
35 (15A)
37 (5A)
38 (20A)
39 (5A)
Circuitry
Go To Pinpoint Test A
Go To Pinpoint Test W
Section 418-
or for the
.