wiper motor FORD MUSTANG 2003 User Guide

Washers
When the GEM detects the ignition switch circuits are in RUN or ACC states, and the GEM detects a
WASH request from the wiper delay/wash circuits, the GEM will activate the washer pump relay circuit
for as long as the request is present up to 10 seconds.
Activation of the washer pump when in INTERVAL or OFF is delayed until a wash request is active for
a minimum amount of time. In this scenario, the wash request must be present continuously for at least
210 ms. This allows a wash request that is present for less than 210 ms, to provide additional
functionality by initiating a single wipe, called "mist wipe". The mist wipe function is a single wipe at low
speed without activating the washer motor.
When in LOW or HIGH, any WASH request, regardless of the length of time it is present, will activate
the washer pump. When in INTERVAL or OFF mode, upon deactivation of the washer motor, this
feature shall provide two wipes at low speed before returning to the INTERVAL or OFF state as
defined by the inputs. These additional wipes are provided to clear residual washer fluid from the front
windshield.
Inspection and Verification
1. Verify the customer concern by operating the wiper/washer system.
2. Visually inspect for obvious signs of mechanical and electrical damage.
3. 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 diagnostic tool does not communicate with the vehicle:
zCheck that the program card is correctly installed.
z Check the connections to the vehicle.
z Check the ignition switch position.
4. If diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool manual.
5. Carry out the DATA LINK DIAGNOSTIC TEST. If diagnostic tool responds with: zCKT914, CKT915 or CKT70 = ALL ECUS NO RESP/NOT EQUIP, refer to Section 418 -
00 .
z NO RESPONSE/NOT EQUIPPED for GEM, go to Pinpoint Test A.
z SYSTEM PASSED, retrieve and record the continuous diagnostic trouble codes (DTCs),
erase the continuous DTCs and carry out self- test diagnostics for the GEM.
Visual Inspection Chart Mechanical Electrical
z
Hoses to windshield washer pump
z Wiper linkage z
CJB Fuse 39 (5A)
z CJB Fuse 26 (30A)
z Wiring harness
z Loose or corroded connector(s)
z Relays
z Motors
z Multifunction switch
z GEM Klj . 2 ba
202003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

6. If the DTCs retrieved are related to the concern, go to GEM Diagnostic Trouble Code (DTC)
Index to continue diagnostics.
7. If no DTCs related to the concern are retrieved, proceed to Symptom Chart to continue diagnostics.
GEM Diagnostic Trouble Code (DTC) Index GEM Diagnostic Trouble Code (DTC) Index DTC Description Source Action
B1217 Horn Relay Coil Circuit Failure GEM REFER to
Section 413 - 06 .
B1218 Horn Relay Coil Circuit Short to
Vbatt GEM REFER to
Section 413 - 06 .
B1312 Lamp Headlamp Input Circuit
Short to Battery GEM REFER to
Section 417 - 01 .
B1317 Battery Voltage High GEM REFER to
Section 414 - 00 .
B1318 Battery Voltage Low GEM REFER to
Section 414 - 00 .
B1322 Driver Door Ajar Circuit Short to
Ground GEM REFER to
Section 417 - 02 .
B1330 Passenger Door Ajar Circuit
Short to Ground GEM REFER to
Section 417 - 02 .
B1334 Decklid Ajar Rear Door Circuit
Short to Ground GEM REFER to
Section 417 - 02 .
B1339 Chime Input Request Circuit
Short to Battery (FOJ) GEM REFER to
Section 413 - 09 .
B1340 Chime Input Request Circuit
Short to Ground GEM REFER to
Section 413 - 09 .
B1342 ECU Is Defective GEM CLEAR the DTCs. Retrieve the DTCs. If DTC
B1342 is retrieved, INSTALL a new GEM. REFER to Section 419 - 10 .
B1353 Ignition Key-
In Circuit Open GEM REFER to
Section 413 - 09 .
B1359 Ignition Run/Acc Circuit Failure GEM REFER to
Section 211 - 05 .
B1396 Power Door Lock Circuit Short
to Battery GEM REFER to
Section 501 - 14B .
B1397 Power Door Unlock Circuit
Short to Battery GEM REFER to
Section 501 - 14B .
B1405 Driver Power Window Down
Circuit Short to Battery GEM REFER to
Section 501 - 11 .
B1408 Driver Power Window Up Circuit
Short to Battery GEM REFER to
Section 501 - 11 .
B1410 Driver Power Window Motor
Circuit Failure GEM REFER to
Section 501 - 11 .
B1426 Lamp Safety Belt Circuit Short
to Battery GEM REFER to
Section 413 - 01 .
B1428 Lamp Safety Belt Circuit Failure GEM REFER to
Section 413 - 01 .
B1431 Wiper Brake/Run Relay Circuit
Failure GEM GO to
Pinpoint Test B .
B1432 Wiper Brake/Run Relay Circuit GEM GO to
Pinpoint Test B . Klj . 3 ba
202003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

Short to Battery
B1434 Wiper HIGH and LOW Speed
Relay Coil Circuit Failure GEM GO to
Pinpoint Test B .
B1436 Wiper HIGH and LOW Speed
Relay Coil Circuit Short to Battery GEM GO to
Pinpoint Test B .
B1438 Wiper Mode Select Switch
Circuit Failure GEM GO to
Pinpoint Test B .
B1441 Wiper Mode Select Switch
Circuit Short to Ground GEM GO to
Pinpoint Test B .
B1446 Wiper Park Sense Circuit
Failure GEM GO to
Pinpoint Test B .
B1448 Wiper Park Sense Circuit Short
to Battery GEM GO to
Pinpoint Test B .
B1450 Wiper Wash/Delay Switch
Circuit Failure GEM GO to
Pinpoint Test C .
B1453 Wiper Wash/Delay Switch
Circuit Short to Ground GEM GO to
Pinpoint Test C .
B1458 Wiper Washer Pump Motor
Relay Circuit Failure GEM GO to
Pinpoint Test C .
B1460 Wiper Washer Pump Motor
Relay Coil Circuit Short to
Battery GEM GO to
Pinpoint Test C .
B1462 Safety Belt Switch Circuit
Failure GEM REFER to
Section 413 - 09 .
B1466 Wiper HIGH and LOW Speed
Not Switching GEM GO to
Pinpoint Test B .
B1473 Wiper Low Speed Circuit Motor
Failure GEM GO to
Pinpoint Test B .
B1476 Wiper High Speed Circuit Motor
Failure GEM GO to
Pinpoint Test B .
B1551 Decklid Release Circuit Failure GEM REFER to
Section 501 - 14B .
B1553 Decklid Release Circuit Short to
Battery GEM REFER to
Section 501 - 14B .
B1555 Ignition Run/Start Circuit Failure GEM REFER to
Section 211 - 05 .
B1687 Lamp Dome Input Circuit Short
to Battery GEM REFER to
Section 417 - 02 .
B2486 LF Side Repeater Lamp Output
Circuit Failure GEM REFER to
Section 417 - 01 .
B2488 RF Side Repeater Lamp Output
Circuit Failure GEM REFER to
Section 417 - 01 .
C1189 Brake Fluid Level Sensor Input
Short Circuit to Ground GEM REFER to
Section 413 - 01 .
C1223 Lamp Brake Warning Output
Circuit Failure GEM REFER to
Section 413 - 01 .
C1225 Lamp Brake Warning Output
Circuit Short to Battery GEM REFER to
Section 413 - 01 . Klj . 4 ba
202003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

Symptom Chart
Symptom Chart Condition
Possible Sources Action
z No communication with the
generic electronic module z
CJB Fuse 39 (5A).
z Circuitry.
z GEM. z
GO to
Pinpoint Test A .
z The wipers are inoperative zCJB Fuse 26 (30A).
z Ignition switch.
z Circuitry.
z GEM.
z Multifunction switch
(13K359).
z Wiper ON/OFF
relay.
z Wiper HIGH/LOW
relay.
z Wiper motor. z
GO to
Pinpoint Test B .
z The wipers stay on continuously zCircuitry.
z GEM.
z Multifunction
switch.
z Wiper ON/OFF
relay.
z Wiper HIGH/LOW
relay.
z Wiper motor. z
GO to
Pinpoint Test B .
z The HIGH and LOW wiper
speeds do not operate correctly z
Circuitry.
z GEM.
z Multifunction
switch.
z Wiper HIGH/LOW
relay.
z Wiper motor.
z DTC B1434. z
GO to
Pinpoint Test B .
z The intermittent wiper mode
does not operate correctly z
Circuitry.
z GEM.
z Multifunction
switch.
z Wiper motor. z
GO to
Pinpoint Test B .
z The washer pump is inoperative zCJB Fuse 26 (30A).
z Circuitry.
z GEM.
z Multifunction
switch.
z Washer pump
relay.
z Washer pump.
z Ignition switch. z
GO to
Pinpoint Test C .
z The low wiper speed does not
operate correctly z
Circuitry.
z Multifunction
switch.
z Wiper HIGH/LOW
relay.
z Wiper motor.
z GEM.
z DTC B1473.
z DTC B1434. z
GO to
Pinpoint Test B . Klj . 5 ba
202003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

relay Pin 5, Circuit 65 (DG), harness side and ground; and
between BJB wiper ON/OFF relay Pin 2, Circuit 65 (DG),
harness side and ground.
z Are the voltages greater than 10 volts? REPAIR circuit(s) in question.
REPEAT the self-
test.
CLEAR the DTCs. B11 ISOLATE PROBLEM BETWEEN GEM AND BJB
z
Key in OFF position.
z Connect a fused jumper wire (30A) between wiper
ON/OFF relay Pin 3 and Pin 5, harness side.
z Key in ON position.
z Did the wiper motor activate? Yes
GO to
B12 .
No
GO to B22 .
B12 CARRY OUT THE WIPER ON/OFF RELAY COMPONENT
TEST z
Check the wiper ON and OFF relay; refer to Wiring
Diagrams, Cell 149, Component Testing.
z Is the ON/OFF wiper relay OK? Yes
GO to
B13 .
No
INSTALL a new wiper
ON/OFF relay. REPEAT the
self- test. CLEAR the DTCs. B13 CHECK CIRCUIT 646 (YE/WH) FOR SHORT TO
BATTERY BETWEEN GEM AND BJB z
Disconnect: Wiper On/Off Relay.
z Disconnect: GEM C201d.
z Measure the voltage between GEM C201d 3 Pin 12,
Circuit 646 (YE/WH), harness side and ground. Yes
REPAIR Circuit 646
(YE/WH). REPEAT the self-
test. CLEAR the DTCs.
No
GO to
B14 . Klj . 10 ba
202003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

z
Connect a fused jumper wire (30A) between wiper
HIGH/LOW relay Pin 30, Circuit 61 (YE/RD), harness side
and Pin 87, Circuit 58 (WH), harness side.
z Did the wiper motor speed increase with the jumper
installed and slow down with the jumper removed? GO to
B18 .
No
GO to B26 .
B18 CARRY OUT COMPONENT TEST ON WIPER HIGH/LOW
RELAY z
Check the wiper HIGH/LOW relay; refer to Wiring
Diagrams, Cell 149, Component Testing.
z Is the wiper HIGH/LOW relay OK? Yes
GO to
B19 .
No
INSTALL a new wiper
HIGH/LOW relay. REPEAT
the self- test. CLEAR the
DTCs. B19 CHECK CIRCUIT 647 (GY/LB) FOR SHORT TO
BATTERY BETWEEN GEM AND BJB z
Disconnect: GEM C201d.
z Measure voltage between GEM C201d Pin 5, Circuit 647
(GY/LB), harness side and ground.
z Is the voltage greater than 10 volts? Yes
REPAIR Circuit 647 (GY/LB).
REPEAT the self-
test.
CLEAR the DTCs.
No
GO to B20 .
B20 CHECK CIRCUIT 647 (GY/LB) FOR SHORT TO GROUND
BETWEEN GEM AND BJB z
Measure the resistance between GEM C201d Pin 5,
Circuit 647 (GY/LB), harness side and ground. Yes
GO to
B21 .
No
REPAIR Circuit 647 (GY/LB).
REPEAT the self- test.
CLEAR the DTCs. Klj . 12 ba
202003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

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
202003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

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
202003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

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
202003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...

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
202003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_5108/S3B~us~en~ ...