Ford 2003 Mustang Workshop Manual page 3321

Visual Inspection Chart
Mechanical
Switch(es)
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 communicate with the vehicle, refer to the diagnostic tool
manual.
6. Carry out the Data Link Diagnostic 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 GEM, go to Pinpoint Test A.
NO RESP/NOT EQUIP for RCM, refer to
SYSTEM PASSED, retrieve and record the continuous diagnostic trouble codes (DTCs),
erase the continuous DTCs and carry out self-test diagnostics for the GEM.
7. If the DTCs retrieved are related to the concern, go to the GEM Diagnostic Trouble Code (DTC)
Index to continue diagnostics.
8. If no DTCs related to the concern are retrieved, proceed to the Symptom Chart to continue
diagnostics.
9. If the DTCs retrieved are for the RCM, refer to
GEM Diagnostic Trouble Code (DTC) Index
DTC Description
B1340 Chime Input Request
Circuit Short to Ground
B1342 ECU Is Defective
B1353 Ignition Key-In Circuit
Open
B1462 Safety Belt Switch
Circuit Failure
Electrical
Central junction box (CJB) fuses:
28 (15A)
32 (15A)
39 (5A)
Circuitry
Section 501-20B
Source
GEM Go To Pinpoint Test C
GEM CLEAR the DTCs. TEST the system for normal operation.
RETRIEVE the DTCs. If DTC B1342 is retrieved, INSTALL
a new GEM. REFER to
GEM Go To Pinpoint Test B
GEM Go To Pinpoint Test F
Section 501-20B .
.
Action
.
Section 419-10
.
.
Section 418-
.