Ford 2003 Mustang Workshop Manual page 3880

Is the resistance greater than 10,000 ohms?
B21 CHECK CIRCUIT 647 (GY/LB) FOR OPEN CONDITION
BETWEEN GEM AND BJB
Measure the resistance between GEM C201d Pin 5,
Circuit 647 (GY/LB), harness side and wiper HIGH/LOW
relay Pin 85, Circuit 647 (GY/LB), harness side.
Is the resistance less than 5 ohms?
B22 CHECK CIRCUIT 61 (YE/RD) FOR OPEN CIRCUIT
CONDITION BETWEEN WIPER ON/OFF AND HIGH/LOW
RELAYS
Disconnect: Wiper HIGH/LOW Relay.
Disconnect: Wiper ON/OFF Relay.
Measure the resistance between wiper ON/OFF relay Pin
3, Circuit 61 (YE/RD), harness side and wiper HIGH/LOW
relay Pin 30, Circuit 61 (YE/RD), harness side.
Is the resistance less than 5 ohms?
B23 CARRY OUT THE WIPER HIGH/LOW RELAY
COMPONENT TEST
Check the wiper HIGH/LOW relay; refer to Wiring
Diagrams, Cell 149, Component Testing.
Is the wiper HIGH/LOW relay OK?
Yes
INSTALL a new GEM.
REFER to Section 419-10
REPEAT the self-test.
CLEAR the DTCs.
No
REPAIR Circuit 647 (GY/LB).
REPEAT the self-test.
CLEAR the DTCs.
Yes
GO to B23 .
No
REPAIR Circuit 61 (YE/RD).
REPEAT the self-test.
CLEAR the DTCs.
Yes
GO to B24 .
No
INSTALL a new wiper
HIGH/LOW relay. REPEAT
the self-test. CLEAR the
.