FORD MUSTANG 2003 Workshop Manual

DTCs.
B24 CHECK CIRCUIT 56 (DB/OG) FOR AN OPEN CIRCUIT
BETWEEN THE WIPER HIGH/LOW RELAY AND THE WIPER
MOTOR z
Disconnect: Wiper Motor C125.
z Measure the resistance between wiper HIGH/LOW relay
Pin 87A, Circuit 56 (DB/OG), harness side and wiper
motor C125 Pin 4, Circuit 56 (DB/OG), harness side.
z Is the resistance less than 5 ohms? Yes
GO to
B25 .
No
REPAIR Circuit 56 (DB/OG).
REPEAT the self- test.
CLEAR the DTCs. B25 CHECK CIRCUIT 1205 (BK) FOR OPEN CIRCUIT
CONDITION BETWEEN WIPER MOTOR AND GROUND z
Measure the resistance between wiper motor C125 Pin 3,
Circuit 1205 (BK), harness side and ground.
z Is the resistance less than 5 ohms? Yes
CARRY OUT the windshield
wiper motor component test.
REFER to Component Test.
If the component fails,
INSTALL a new wiper motor;
REFER to
Motor — Windshield
Wiper . REPEAT the self-
test.
CLEAR the DTCs.
No
REPAIR Circuit 1205 (BK).
REPEAT the self- test.
CLEAR the DTCs. B26 CHECK CIRCUIT 58 (WH) FOR AN OPEN CIRCUIT
BETWEEN THE WIPER HIGH/LOW RELAY AND THE WIPER
MOTOR z
Disconnect: Wiper Motor C125.
z Measure the resistance between wiper motor C125 Pin 5,
Circuit 58 (WH), harness side and wiper HIGH/LOW relay
Pin 87, Circuit 58 (WH), harness side.
z Is the resistance less than 5 ohms? Yes
CARRY OUT the windshield
wiper motor component test.
REFER to Component Test.
If the component fails,
INSTALL a new wiper motor;
REFER to
Motor — Windshield
Wiper . REPEAT the self-
test.
CLEAR the DTCs.
No
REPAIR Circuit 58 (WH).
REPEAT the self- test.
CLEAR the DTCs. B27 CHECK CIRCUIT 28 (BK/PK) FOR OPEN CIRCUIT
CONDITION BETWEEN THE WIPER HIGH/LOW RELAY AND
THE WIPER MOTOR Klj . 14 ba
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PINPOINT TEST C: WINDSHIELD WASHERS DO NOT OPERATE /
OPERATE CORRECTLY z
Disconnect: Wiper Motor C125.
z Disconnect: GEM C201d.
z Measure the resistance between wiper motor C125 Pin 1,
Circuit 28 (BK/PK), harness side and GEM C201d Pin 1,
Circuit 58 (WH), harness side.
z Is the resistance less than 5 ohms? Yes
INSTALL a new wiper motor;
REFER to
Motor — Windshield
Wiper . REPEAT the self-
test.
CLEAR the DTCs.
No
REPAIR Circuit 28 (BK/PK).
REPEAT the self- test.
CLEAR the DTCs. Test Step Result / Action to
Take C1 DETERMINE IF GEM IS RECEIVING CORRECT IGNITION
SWITCH STATUS z
Key in OFF position.
z Connect the diagnostic tool.
z NOTE: If the vehicle is equipped with a manual transmission,
depress the clutch while turning the ignition switch to START.
z 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.
z Do the GEM PID values agree with the ignition switch
positions? Yes
GO to
C2 .
No
REFER to Section 413 - 09 .
C2 DETERMINE IF GEM IS RECEIVING CORRECT WIPER SWITCH
STATUS FROM MULTIFUNCTION SWITCH z
Key in ON position.
z Monitor GEM PID WPMODE while activating all wiper control
positions on the multifunction switch.
z Does the GEM PID values agree with switch positions? Yes
GO to
C3 .
No
GO to Pinpoint Test B .
C3 CHECK GEM CONTROL OF THE WASHER ON/OFF RELAY
z
Trigger GEM active command WASH RLY ON and OFF.
z Do washers turn ON and OFF? Yes
INSTALL a new GEM;
REFER to
Section 419 - 10 . REPEAT the
self- test. CLEAR the
DTCs.
No
GO to C4 .
C4 CHECK CIRCUIT 65 (DG) FOR OPEN CIRCUIT BETWEEN CJB
AND WASHER ON/OFF RELAY NOTE:
Verify voltage at CJB F26 (30A) before carrying out this Yes Klj . 15 ba
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test.
z Disconnect: Washer ON/OFF Relay.
z Measure the voltage between washer ON/OFF relay Pin 2, Circuit
65 (DG), harness side and ground; and washer ON/OFF relay Pin
3, Circuit 65 (DG), harness side and ground.
z Are the voltages greater than 10 volts? GO to
C5 .
No
REPAIR the circuit in
question. REPEAT
the self- test. CLEAR
the DTCs. C5 ISOLATE THE PROBLEM BETWEEN GEM AND BJB
z
Connect a fused jumper wire (30A) between washer ON/OFF
relay Pin 3, Circuit 65 (DG), harness side and Pin 5, Circuit 941
(BK/WH), harness side.
z Did the washer motor activate? Yes
GO to
C6 .
No
GO to C10 .
C6 CARRY OUT WASHER ON/OFF RELAY COMPONENT TEST
z
Check the washer ON/OFF relay; refer to Wiring Diagrams, Cell
149, Component Testing.
z Is the washer ON/OFF relay OK? Yes
GO to
C7 .
No
INSTALL a new wiper
ON/OFF relay.
REPEAT the self- test.
CLEAR the DTCs. C7 CHECK CIRCUIT 686 (TN/RD) FOR SHORT TO BATTERY
BETWEEN GEM AND BJB z
Disconnect: GEM C201d.
z Measure the voltage between GEM C201d Pin 6, Circuit 686
(TN/RD), harness side and ground. Yes
REPAIR Circuit 686
(TN/RD). REPEAT the
self-
test. CLEAR the
DTCs.
No
GO to C8 . Klj . 16 ba
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z
Is the voltage greater than 10 volts? C8 CHECK CIRCUIT 686 (TN/RD) FOR SHORT TO GROUND
BETWEEN GEM AND BJB z
Measure the resistance between GEM C201d Pin 6, Circuit 686
(TN/RD), harness side and ground.
z Is the resistance greater than 10,000 ohms? Yes
GO to
C9 .
No
REPAIR Circuit 686
(TN/RD). REPEAT the
self- test. CLEAR the
DTCs. C9 CHECK CIRCUIT 686 (TN/RD) FOR AN OPEN CIRCUIT
BETWEEN GEM AND WASHER ON/OFF RELAY z
Measure the resistance between GEM C201d Pin 6, Circuit 686
(TN/RD), harness side and washer ON/OFF relay Pin 1, Circuit
686 (TN/RD), harness side.
z Is the resistance less than 5 ohms? Yes
INSTALL a new GEM;
REFER to
Section 419 - 10 . REPEAT the
self- test. CLEAR the
DTCs.
No
REPAIR Circuit 686
(TN/RD). REPEAT the
self- test. CLEAR the
DTCs. C10 CHECK CIRCUIT 941 (BK/WH) FOR SHORT TO BATTERY
BETWEEN BJB AND WASHER MOTOR z
Disconnect: Washer Pump Motor C137.
z Measure the voltage between washer pump C137 Pin 1, Circuit
941 (BK/WH), harness side and ground.
z Is the voltage greater than 10 volts? Yes
REPAIR Circuit 941
(BK/WH). REPEAT
the self-
test. CLEAR
the DTCs.
No
GO to C11 .
C11 CHECK CIRCUIT 941 (BK/WH)FOR OPEN BETWEEN THE BJB
AND THE WASHER MOTOR z
Measure the resistance between washer pump C137 Pin 1, Circuit
941 (BK/WH), harness side and washer pump relay Pin 5, Circuit
941 (BK/WH), harness side. Yes
GO to
C12 .
No Klj . 17 ba
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Component Test
Windshield Wiper Motor
CAUTION: Do not handle the wiper motor abusively when diagnosing the wiper
operations. Failure to follow this caution may result in damage to the motor magnets and will
make the wiper motor inoperative. Rough handling of new replacement wiper motors may also
damage the motor magnets.
Use Alternator, Regulator, Battery and Starter Tester (ARBST) to test the wiper motor on the vehicle. z
Is the resistance less than 5 ohms? REPAIR Circuit 941
(BK/WH). REPEAT
the self-
test. CLEAR
the DTCs. C12 CHECK CIRCUIT 1205 (BK) FOR AN OPEN
z
Measure the resistance between washer pump C137 Pin 2, Circuit
1205 (BK), harness side and ground.
z Is the resistance less than 5 ohms? Yes
INSTALL a new
washer motor.
REPEAT the self-
test.
CLEAR the DTCs.
No
REPAIR Circuit 1205
(BK). REPEAT the
self- test. CLEAR the
DTCs. Klj . 18 ba
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To test the wiper motor, disconnect the windshield wiper mounting arm and pivot shaft from the
windshield wiper motor; refer to
Pivot Arm .
Disconnect the wiper motor. Connect the (1) green lead from (2) (ARBST) to the battery negative (- )
post. Connect the (3) red lead from ARBST to the wiper motor (4) common brush terminal (terminal 3).
Test the low speed mode by connecting a (5) cable from the battery positive (+) post to the (6) low
speed brush terminal (terminal 4) and measure the current draw. If the current draw is greater than 3.5
amperes, install a new windshield wiper motor.
Test the high speed mode by connecting a cable from the battery positive (+) post to the (7) high
speed brush terminal (terminal 5) and measure the current draw. If the current draw is greater than 5.5
amperes, install a new wiper motor. Klj . 19 ba
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GENERAL PROCEDURES
Wiper Blade and Pivot Arm Adjustment
1. Cycle and park the windshield wipers.
2. Verify that the distance between the center of the RH windshield wiper blade and the top edge of the cowl top vent panel is within specification.
3. Verify that the distance between the center of the LH windshield wiper blade and the top edge of the cowl top vent panel is within specification.
4. If the distance is not within specification, remove the windshield wiper pivot arms and reposition to specification.
Remove the pivot arm. 1. Pull up on the pivot arm.
2. Pull out on the retainer tab and remove the pivot arm.
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REMOVAL AND INSTALLATION
Pivot Arm
Removal
1. NOTE: New windshield wiper pivot arms need to be installed as an assembly.
Remove the pivot arm. 1. Pull up on the pivot arm.
2. Pull out on the retainer tab and remove the pivot arm.
Installation 1. To install, reverse the removal procedure.
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