412-02-18
412-02-18
Heating and Ventilation
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST H: DTC B1857 CLIMATE CONTROL ON/OFF SWITCH FAILURE
TEST STEP
ACTION TO TAKE
•
With key OFF, disconnect BOB from the IAA module; leave BOB
Yes =
REPLACE the IAA module.
connected to IAA module C1945.
•
With key OFF, disconnect recirculation vacuum pressure sensor C2993
No =
REPAIR the O/Y wire.
and measure the resistance between BOB pin 103 and ground (BOB pin
80).
•
Is the resistance greater than 10,000 ohms?
H14 CHECK CIRCUITS 3066 (O/Y) AND 3067 (LB/R) FOR OPEN(S)
•
With key OFF, disconnect recirculation vacuum pressure sensor C2993
Yes =
GO to H15.
and measure the resistance of the O/Y wire between recirculation vacuum
pressure sensor C2993 and BOB pin 103.
•
With key OFF, measure the resistance of the LB/R wire between
No =
REPAIR the wire(s) in
recirculation vacuum pressure sensor C2993 and BOB pin 94.
question.
•
Are the resistances less than 5 ohms?
H15 CHECK CIRCUIT 3067 (LB/R) FOR SHORT TO GROUND
•
With key OFF, disconnect BOB from the IAA module; leave BOB
Yes =
REPLACE the recirculation
connected to IAA module C1945.
vacuum pressure sensor.
•
With key OFF, measure the resistance between BOB pin 94 and ground
No =
REPAIR the LB/R wire.
(BOB pin 80).
•
Is the resistance greater than 10,000 ohms?
H16 CHECK RECIRCULATION VACUUM PRESSURE SENSOR
GROUND REFERENCE
•
With key OFF, measure the resistance between BOB pin 90 and ground
Yes =
GO to H17.
(BOB pin 80).
•
Is the resistance less than 5 ohms?
No =
REPLACE the IAA module.
REFER to
H17 CHECK CIRCUIT 3068 (BR/PK) FOR OPEN
•
With key OFF, disconnect BOB from the IAA module; leave BOB
Yes =
REPLACE the recirculation
connected to IAA module C1945.
vacuum pressure sensor.
•
With key OFF, disconnect recirculation vacuum pressure sensor C2993
No =
REPAIR the BR/PK wire.
and measure the resistance of the BR/PK wire recirculation vacuum
pressure sensor C2993 and BOB pin 90.
•
Is the resistance less than 5 ohms?
H18 CHECK MODE SELECT SWITCH
•
With key OFF, disconnect mode select switch C234.
Yes =
GO to H19.
•
Measure the resistance between terminals 3 and 4 on the mode select
No =
REPLACE the mode select
switch with the mode select knob in the PANEL, PANEL/FLOOR,
switch.
FLOOR, FLOOR/DEFROST, DEFROST, and A/C (if equipped)
positions.
•
Are the resistances less than 5 ohms?
H19 CHECK GROUND TO MODE SELECT SWITCH
•
With key OFF, measure the resistance between pin 4 (BK wire) on mode Yes =
GO to H20.
select switch C234 and ground.
•
Is the resistance less than 5 ohms?
No =
REPAIR the BK wire.
H20 CHECK CIRCUIT 3056 (T/LG) FOR OPEN
•
With key OFF, measure the resistance of the T/LG wire between pin 3
Yes =
REPLACE the IAA module.
on mode select switch C234 and BOB pin 58.
•
Is the resistance less than 5 ohms?
No =
REPAIR the T/LG wire.
2001 Ranger EV, 01/2001
Summary of Contents for 2001 Ranger
Page 28: ......
Page 138: ...206 04 7 206 04 7 Rear Disc Brake REMOVAL AND INSTALLATION Continued 2001 Ranger EV 01 2001...
Page 820: ......
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Page 828: ...2001 RANGER ELECTRIC VEHICLE 1 4 TABLE OF CONTENTS INDEX...
Page 864: ...2001 RANGER ELECTRIC VEHICLE 11 10 FUSE PANEL CIRCUIT PROTECTION...
Page 866: ...2001 RANGER ELECTRIC VEHICLE 12 2 AUXILIARY BATTERY CHARGING SYSTEM...
Page 900: ...2001 RANGER ELECTRIC VEHICLE 13 34 POWER DISTRIBUTION HIGH VOLTAGE...
Page 906: ...2001 RANGER ELECTRIC VEHICLE 14 6 MULTIPLEX COMMUNICATION NETWORK...
Page 932: ...2001 RANGER ELECTRIC VEHICLE 19 4 TRACTION BATTERY COOLING VENTILATION...
Page 938: ...2001 RANGER ELECTRIC VEHICLE 21 4 CONTACTOR BOX RELAY CONTROL...
Page 944: ...2001 RANGER ELECTRIC VEHICLE 33 2 COOLING SYSTEM...
Page 946: ...2001 RANGER ELECTRIC VEHICLE 37 2 SHIFT LOCK...
Page 950: ...2001 RANGER ELECTRIC VEHICLE 42 4 ANTI LOCK BRAKE SYSTEM ABS...
Page 954: ...2001 RANGER ELECTRIC VEHICLE 44 2 HORN CIGAR LIGHTER...
Page 964: ...2001 RANGER ELECTRIC VEHICLE 53 8 HEATER...
Page 972: ...2001 RANGER ELECTRIC VEHICLE 54 8 AIR CONDITIONER HEATER...
Page 994: ...2001 RANGER ELECTRIC VEHICLE 71 6 INSTRUMENT ILLUMINATION...
Page 1000: ...2001 RANGER ELECTRIC VEHICLE 81 6 INTERVAL WIPER WASHER...
Page 1014: ...2001 RANGER ELECTRIC VEHICLE 90 10 TURN STOP HAZARD LAMPS...
Page 1028: ...2001 RANGER ELECTRIC VEHICLE 124 2 POWER MIRRORS...
Page 1030: ...2001 RANGER ELECTRIC VEHICLE 130 2 RADIO...
Page 1032: ...2001 RANGER ELECTRIC VEHICLE 139 2 VACUUM SYSTEM...
Page 1192: ...2001 RANGER ELECTRIC VEHICLE 151 30 COMPONENT LOCATION VIEWS...