412-00-25 Climate Control System — General Information 412-00-25
DIAGNOSIS AND TESTING (CONTINUED)
CONDITIONS
DETAILS/RESULTS/ACTIONS
C12: CHECK THE CIRCUIT FOR HEATER BLOWER, LOW SPEED
1 Measure the voltage between heater blower
switch, connector C72, pin 2, circuit 31S-CA31
(BK/YE), harness side and ground.
• Is battery voltage indicated?
Yes
GO TO C14
No
GO TO C13
C13: CHECK THE CIRCUIT FOR HEATER BLOWER, LOW SPEED
1.
2.
Heater blower se-
ries resistor C90
3 Measure the resistance between heater blower
series resistor, connector C90, pin 2, circuit
31S-CA31 (BK/YE), harness side and heater
blower switch, connector C72, pin 2, circuit
31S-CA31 (BK/YE), harness side.
• Is the resistance less than 2 ohms?
Yes
CHECK the heater blower series resistor;
INSTALL a new one if necessary. TEST the
system for normal operation.
No
REPAIR the open circuit(s) between heater
blower series resistor and heater blower
switch by using the wiring diagrams. TEST
the system for normal operation.
E9425 EN 07/2001 2002 Bantam
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