Off - Ford 2003 Mustang Workshop Manual

Is the resistance less than 5 ohms?
A3 CHECK CIRCUIT 397 (BK/WH) FOR SHORT TO POWER
Measure the voltage between the GEM C201b pin 4, circuit
397 (BK/WH), harness side and ground.
Is any voltage present?
PINPOINT TEST B: WINDSHIELD WIPERS DO NOT OPERATE /
OPERATE CORRECTLY
B1 DETERMINE IF GEM IS RECEIVING CORRECT IGNITION
SWITCH STATUS
Key in OFF position.
Connect the diagnostic tool.
NOTE: If the vehicle is equipped with a manual
transmission, depress the clutch while turning the ignition
switch to START.
Monitor the GEM PIDs IGN_S, IGN_R IGN_A, and
IGN_KEY while turning the ignition switch through the
START, RUN, OFF and ACC positions.
Do the GEM PID values agree with the ignition switch
positions?
B2 DETERMINE IF GEM IS RECEIVING CORRECT WIPER
SWITCH STATUS FROM MULTIFUNCTION SWITCH
Key in ON position.
Monitor PID WPMODE, while moving through all wiper
control positions on the multifunction switch.
Do the GEM PID values agree with switch positions?
B3 TEST GEM CONTROL OF WIPER ON/OFF RELAY
Trigger the GEM active command WIPER RLY ON and

OFF.

Do the wipers turn ON and OFF?
Test Step
for normal operation.
Yes
REPAIR the circuit. TEST
the system for normal
operation.
No
REFER to Section 418-00
Result / Action to Take
Yes
GO to B2 .
No
REFER to Section 413-09
Yes
GO to B3 .
No
GO to B6 .
Yes
GO to B4 .
.
.