water pump BMW X5 2002 E53 Model Yar Changes
[x] Cancel search | Manufacturer: BMW, Model Year: 2002, Model line: X5, Model: BMW X5 2002 E53Pages: 22, PDF Size: 1.05 MB
Page 13 of 22
13
2001 model year changes
E39 IHKR
The 525i/it will be fitted with IHKR as standard
equipment. IHKA will be available as an option
on those vehicles by ordering the Convenience
package: SA 466.
IHKR is a semi-automatically regulated heating
and air-conditioning system. The components
are similar to the IHKR system used in the X5
3.0i.
The E39 IHKR is a single zone system that regulates the temperature of the cabin based
on the occupants desired temperature, selected by a temperature setting dial. Blower con-
trol, air distribution settings and stratification flap are manual.
System Components
The E39 IHKR consists of the following components:
IHKR control unit with operating controls
IHKR integrated heater and air conditioning case
1 Heater core temperature sensor
Evaporator temperature sensor
Interior temperature sensor (located in drivers footwell)
Double cage blower motor and final stage
1 Water valve (duty cycle controlled)
Auxiliary water pump
1 Fresh air/re-circ stepper motor
Auxiliary fan (DME controlled)
Refrigerant Pressure Sensor
Left and right fresh air micro-filters
Page 14 of 22
14
2001 model year changes
E39 IHKR I.P.O.
-+
HEATERCORE
TEMPERATUREHEATER CORE
TEMPERATURE
DME
KL31
KL30
KL15
FAN SPEED
A/C REQUEST
RECIRCULATION
REAR DEFROST
TEMPERATURE
CONTROL
EVAPORATOR
TEMPERATUREWASHER JET HEATER
BLOWER MOTOR OUTPUT STAGE
REAR WINDOW DEFROST RELAYWATER VALVE
FRESH AIR/RECIRC MOTOR
E39
IHKR
REFRIGERANT PRESSURE
0
45
80 72
TEMP
INTERIOR TEMPERATURE
(FOOTWELL)
LCM58G
K-BUS
KOREL
+M
COMPRESSORCONTROLCOMPRESSOR CONTROL
KL 30
KL 15
BMWDISBMW
DISBMWDISB
M
WD
I
S
DSC III
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K-BUS
M
AUXILIARY WATER PUMP
COMPRESSOR
SHUT OFF/ON
SIGNAL
Page 15 of 22
15
2001 model year changes
IHKR control unit with operating controls
The IHKR control unit is incorporated into the control panel. The control panel consists of
three buttons and three rotary dials.
Functional Description:
Air distribution:is carried out using the mechanical rotary dial acting on three
bowden cables.
Blower adjustment:is carried out using the rotary dial potentiometer (22 steps). The
control unit signals the final stage via a variable voltage signal.
Temperature control: The desired interior temperature is set with the rotary dial
potentiometer on the control panel. Temperature regulation is based on the Y-factor.
The inputs used to determine the Y-factor are:
Position of the temperature control potentiometer dial
Heater core temperature
Coolant temperature
Exterior Temperature
Interior Temperature
Control of the interior temperature is carried out by the control unit cycling the water
valve to regulate the temperature of the heater core. During heater operation the
auxiliary water pump will be switched on to increase coolant circulation through the
heater core. The service station feature is carried over to the E39 IHKR.
Fresh air/recirculation:Recirculation is requested by an input to the control panel
button or the MFL. The control unit actuates the fresh air/re-circ stepper motor for
control of the flap position. Ram effect air is compensated for.
Air conditioning: :
The request for air conditioning is made by means of a push button.
X611 X610
12 pin 26 pin
X18341
3 pinBlue - vent flaps
Red - defrost flaps
Green - footwell flaps3 cables1. Temperature control potentiometer
2. Air distribution mechanical knob
3. Fan control potentiometer
123
4
5
6
4. Recirculation
5. Air conditioning request
6. Rear window defroster
Page 18 of 22
18
2001 model year changes
E39 IHKA IV I.P.O.
E39 IHKA IV
CONTROL
PANEL/
MODULE
MAX DEFROST
DEFROST VENT A/C COMPRESSOR
FACE VENT RECIRCULATION - AUC
FOOTWELL VENT REAR DEFROST
AUTOMATIC PROGRAM
MAX COOLING/
REST HEATING
FAN SPEED
REQUEST
INDEPENDENT DRIVER
& PASSENGER SIDE
TEMPERATURE CONTROL
HEATER CORE TEMPERATURE SENSORSEVAPORATOR
TEMPERATURE
COMPRESSOR
SHUT OFF/ON
SIGNAL (KO REL)
+ +REAR
WINDOW
DE-FOGGER
RELAY
AUTO
MAX
70 F 76 F
INTERIORAIR
BLOWER
RELAYBLOWER
RELAY
KL31KL 31KL30KL 30
KL15KL 15
M-BUSM-BUS
-FA C EVENTFLAP
-DEFROST
-FOOTWELL
-FRESHAIR/RECIRCULATION
-RAMAIRFLAP
- FACE VENT FLAP
- DEFROST
- FOOTWELL
- FRESH AIR/RECIRCULATION
- RAM AIR FLAP
FIVESTEPPER
MOTORSFIVE STEPPER
MOTORS
FRESHAIRFLAP
STEPPERMOTORFRESH AIR FLAP
STEPPER MOTOR
INTERIOR AIR TEMP
PHOTO TRANSISTOR
DIAGNOSIS AND CODING
6411839142064 118391420
6411839142064 118391420
COMPRESSOR
CONTROLCOMPRESSOR
CONTROL
AUXILIARYWATERPUMPAUXILIARY WATER PUMP
AUCGAS
SENSOR
HEATERAUC GAS
SENSOR
HEATER
K-BUSK-BUS
-Coolanttemp
-
OutsideAirTemp
-
Vehiclespeed
- Coolant temp
- Outside Air Temp
- Vehicle speed-KLR
-
RecircfromMFL
-
Diagnosis
-KLR
- Recirc from MFL
- Diagnosis
LEFT
WATER
VA LV ELEFT
WATER
VA LV ERIGHT
WATER
VA LV ERIGHT
WATER
VA LV E
-+
A
M
WASHER JET HEATING
2-8VOLT
SIGNAL2-8 VOLT
SIGNAL
MM
BLOWERMOTOR
OUTPUTSTAGEBLOWER MOTOR
OUTPUT STAGE
+
BLOWER
BMWDISB
M
WD
I
SBMWDISBMWDIS
DSC III
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K-BUS
DME
SOLAR SENSORSAUC OXIDIZABLE
GAS SENSOR