412-02-8
412-02-8
Heating and Ventilation
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST A: DTC B1238 OVER TEMPERATURE FAULT
TEST STEP
ACTION TO TAKE
•
With key OFF, disconnect in-line C2999 and measure the resistance
Yes =
GO to A3.
between the Y/W wire and GY/W wire on C2999M.
•
Is the resistance less than 5 ohms?
No =
REPLACE the PTC heater
overtemperature switch
harness assembly.
A3 CHECK GROUND REFERENCE TO PTC HEATER
OVERTEMPERATURE SWITCH
•
With key OFF, measure the resistance between the Y/W wire on C2999F Yes =
GO to A5.
and ground.
•
Is the resistance less than 5 ohms?
No =
GO to A4.
A4 CHECK CIRCUIT 3036 (Y/W) FOR OPEN
•
Connect 104-Pin Breakout Box (BOB) to IAA module C1945; leave IAA Yes =
REPLACE the IAA module.
module disconnected.
•
With key OFF, measure the resistance of the Y/W wire between BOB
No =
REPAIR the Y/W wire.
pin 74 and C2999F.
•
Is the resistance less than 5 ohms?
A5 CHECK CIRCUIT 3037 (GY/W) FOR OPEN
•
With key OFF, disconnect PTC switching module C1999 and measure
Yes =
GO to A6.
the resistance of the GY/W wire between pin 3 on PTC switching
module C1999 and C2999F.
•
Is the resistance less than 5 ohms?
No =
REPAIR the GY/W wire.
A6 CHECK CIRCUITS 3036 (Y/W) AND 3037 (GY/W) FOR SHORT(S)
TO POWER
•
With key OFF, disconnect IAA module C1945.
Yes =
REPAIR the wire(s) in
question.
•
With key ON, measure the voltage between pin 2 (Y/W wire), pin 3
No =
REPLACE the PTC
(GY/W wire) on PTC switching module C1999 and ground.
switching module.
•
Are any of the voltages greater than 0 volts?
A7 CHECK CIRCUIT 3834 (LG) FOR SHORT TO GROUND
•
With key OFF, disconnect IAA module C1945 and measure the
Yes =
REPLACE the IAA module.
resistance between pin 6 (LG wire) on PTC switching module C1999 and
REFER to
ground.
•
Is the resistance greater than 10,000 ohms?
No =
REPAIR the LG wire.
PINPOINT TEST B: DTC B1249 BLEND DOOR FAILURE
TEST STEP
ACTION TO TAKE
B1 CHECK BLEND DOOR ACTUATOR FEEDBACK
•
Enter interface adapter assembly (IAA) module active command mode
Yes =
System OK. CHECK wiring
CONTINUOUS BLEND DOOR MOVEMENT, monitor the IAA module
for intermittent connections.
PID BLENDDR, and set the active command CONT to 10%, 50%, and
90%.
•
Is the BLENDDR PID within 3% of the active command settings?
No =
GO to B2.
B2 CHECK DRIVE VOLTAGE TO BLEND DOOR ACTUATOR
MOTOR
•
With key OFF, disconnect blend door actuator C240 and connect a
Yes =
REPLACE the blend door
voltmeter between pin 7 (BR/LG wire) and pin 8 (P wire) on blend door
actuator.
actuator C240.
•
Enter the IAA module active command mode CONTINUOUS BLEND
No =
DOOR MOVEMENT and set the active command CONT to 90%.
•
Does the voltage fluctuate between 0 and
±
12 volts and then stabilize
at greater than 9 volts?
(Continued)
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 822: ......
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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...