Ford 2003 Mustang Workshop Manual page 3333

Is the resistance less than 5 ohms?
D16 CHECK CIRCUIT 1205 (BK) FOR OPEN BETWEEN
PASSENGER DOOR AJAR SWITCH AND GROUND
Measure the resistance between passenger door ajar switch
C602 pin 1, circuit 1205 (BK), harness side and ground.
Is the resistance less than 5 ohms?
D17 CHECK FOR CORRECT MODULE OPERATION
Check:
for corrosion
for pushed-out pins
connector seated correctly
Connect any disconnected connectors.
Make sure all other system connectors are fully seated.
Operate the system and verify the concern is still present.
Is the concern still present?
PINPOINT TEST E: THE HEADLAMP ON REMINDER CHIME DOES
NOT OPERATE CORRECTLY
E1 CHECK FOR CORRECT OPERATION OF THE HEADLAMP
SWITCH
Cycle the headlamp switch through all positions to verify
correct operation of exterior lighting circuits.
Do all exterior lamps operate correctly?
Test Step
Yes
INSTALL a new passenger
door ajar switch. REFER to
Section 501-14A . REPEAT
the self-test. CLEAR the
DTCs.
No
REPAIR the circuit.
REPEAT the self-test.
CLEAR the DTCs.
Yes
INSTALL a new GEM.
REFER to Section 419-10
CLEAR the DTCs.
REPEAT the GEM self-
test.
No
The system is operating
correctly at this time.
Concern may have been
caused by a loose or
corroded connector.
CLEAR the DTCs.
REPEAT the self-test.
Result / Action to Take
Yes
GO to E2 .
No
REFER to Section 417-01
.
.