Ford 2003 Mustang Workshop Manual page 3881

B24 CHECK CIRCUIT 56 (DB/OG) FOR AN OPEN CIRCUIT
BETWEEN THE WIPER HIGH/LOW RELAY AND THE WIPER
MOTOR
Disconnect: Wiper Motor C125.
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.
Is the resistance less than 5 ohms?
B25 CHECK CIRCUIT 1205 (BK) FOR OPEN CIRCUIT
CONDITION BETWEEN WIPER MOTOR AND GROUND
Measure the resistance between wiper motor C125 Pin 3,
Circuit 1205 (BK), harness side and ground.
Is the resistance less than 5 ohms?
B26 CHECK CIRCUIT 58 (WH) FOR AN OPEN CIRCUIT
BETWEEN THE WIPER HIGH/LOW RELAY AND THE WIPER
MOTOR
Disconnect: Wiper Motor C125.
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.
Is the resistance less than 5 ohms?
B27 CHECK CIRCUIT 28 (BK/PK) FOR OPEN CIRCUIT
CONDITION BETWEEN THE WIPER HIGH/LOW RELAY AND
THE WIPER MOTOR
DTCs.
Yes
GO to B25 .
No
REPAIR Circuit 56 (DB/OG).
REPEAT the self-test.
CLEAR the DTCs.
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.
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.