Ford 2002 Bantam - Page 1116

412-00-23 Climate Control System — General Information 412-00-23
DIAGNOSIS AND TESTING (CONTINUED)
CONDITIONS
DETAILS/RESULTS/ACTIONS
C7: CHECK THE GROUND SUPPLY OF THE HEATER BLOWER SWITCH
1 Measure the resistance between heater blower
switch, connector C72, pin 6, circuit 31-CA25
(BK), harness side and ground.
• Is the resistance less than 2 ohms?
 Yes
CHECK the heater blower switch; INSTALL
a new one if necessary. TEST the system
for normal operation.
 No
REPAIR the open circuit(s) between heater
blower switch and ground by using the wir-
ing diagrams. TEST the system for normal
operation.
C8: CHECK THE CIRCUIT FOR HEATER BLOWER, HIGH SPEED
1. 2.
Heater blower
switch C72
3.
4 Measure the voltage between heater blower
switch, connector C72, pin 4, circuit 31S-CA33
(BK/OG), harness side and ground.
• Is battery voltage indicated?
 Yes
GO TO C9
 No
REPAIR the open circuit(s) between heater
blower motor and heater blower switch by
using the wiring diagrams. TEST the system
for normal operation.
C9: CHECK THE CIRCUIT FOR HEATER BLOWER, MEDIUM SPEED
1 Measure the voltage between heater blower
switch, connector C72, pin 1, circuit 31S-CA32
(BK/BU), harness side and ground.
• Is battery voltage indicated?
 Yes
GO TO C12
 No
GO TO C10
E9425 EN 07/2001 2002 Bantam