Ford 2003 Mustang Workshop Manual page 3334

E2 CHECK IGNITION STATES
Connect the diagnostic tool.
Enter the following diagnostic mode on the diagnostic tool:
GEM PID.
Monitor the GEM PIDS IGN_KEY, IGN_A, IGN_S, and
IGN_R while cycling the ignition switch through the OFF,
ACC, RUN, START and key out positions.
Do the PID values agree with the ignition switch
states?
E3 CHECK GEM INTERNAL TONE OPERATION
Enter the following diagnostic mode on the diagnostic tool:
GEM Active Command.
Trigger the GEM active command CHIME ON and OFF.
Does the chime operate correctly?
E4 CHECK GEM INPUT FROM DOOR AJAR CIRCUIT
Enter the following diagnostic mode on the diagnostic tool:
GEM PID.
Monitor the GEM PID D_DR_SW while opening and closing
the driver door.
Do the GEM PID D_DR_SW values indicate CLOSED
and AJAR correctly?
E5 MONITOR EXTERIOR LAMP INPUT FOR CORRECT
STATE
Key in OFF position.
Enter the following diagnostic mode on the diagnostic tool:
GEM PID.
Monitor the GEM PID PARK_SW, while triggering the
headlamp switch ON and OFF.
Do the GEM PID PARK_SW values indicate ON and
OFF correctly?
E6 CHECK EXTERIOR LAMP INPUT CIRCUIT FOR SHORT
TO POWER — GEM PID PARK_SW
Key in OFF position.
Enter the following diagnostic mode on the diagnostic tool:
GEM PID.
Monitor the GEM PID PARK_SW, while opening and
closing the driver door.
Does the GEM PID PARK_SW value always indicate
ON?
E7 CHECK CIRCUIT 14 (BN) FOR OPEN
Key in OFF position.
Disconnect: GEM C201c.
Disconnect: Headlamp Switch C205.
Measure the resistance between GEM C201c pin 7, circuit
14 (BN), harness side and headlamp switch C205 pin R,
circuit 14 (BN), harness side.
Yes
GO to E3 .
No
Go To Pinpoint Test B .
Yes
GO to E4 .
No
GO to E9 .
Yes
GO to E5 .
No
GO to Pinpoint Test D .
Yes
GO to E9 .
No
GO to E6 .
Yes
GO to E8 .
No
GO to E7 .
Yes
GO to E9 .
No
REPAIR the circuit. REPEAT
the self-test. CLEAR the
DTCs.