EVAPORATOR TEMPERATURE SENSOR 7/41
The evaporator temperature sensor sends the current evaporator temperature to the engine control module (ECM) via the climate control module (CCM). The engine control module (ECM) then determines whether the compressor should be started.
Scheme 9
Type
Temperature-dependent, NTC resistor (negative temperature coefficient).
characteristic
Resistance between terminals #29 and #38 on the breakout box should be 3.44 kohms at +20°C. Resistance decreases as temperature increases.
Other information
Diagnostic trouble code B1B7115 is generated upon short circuit to supply voltage or open circuit.
Diagnostic trouble code B1B7111 is generated upon short circuit to ground.
TERMINAL
| Breakout box connection | Connector terminal | Control module terminal | Signal type | Other |
|---|---|---|---|---|
| #29 | #1 | #C1-5 | Evaporator temperature sensor, signal (+) | |
| #38 | #2 | #C1-14 | Evaporator temperature sensor, signal (-) |
CHECK
Prerequisites (unless otherwise specified)
- Breakout box connected.
- Sensor connected.
- Ignition switch position 0.
Check 1
Evaporator temperature sensor
Measure resistance between terminals #29 and #38 on the breakout box. The value should follow the information below
R = 3.44 kohms at 20°C.
R = 1.47 kohms at 40°C.
R = 336 ohms at 80°C.
R = 187 ohms at 100°C.
PASSENGER COMPARTMENT TEMPERATURE SENSOR 7/41
The passenger compartment temperature sensor continually provides the climate control module (CCM) information on passenger compartment temperature. To prevent the sensor from being affected by surround electronics, a fan is used to blow air from the passenger compartment onto the sensor.
Scheme 10
Type
Passenger compartment temperature sensor: Temperature-dependent, NTC resistance (negative temperature coefficient).
Passenger compartment sensor fan: Electromagnetic motor.
characteristic
Passenger compartment temperature sensor: Resistance between terminals #30 and #38 on the breakout box should be approx. 11.99 kohms at +20°C. Resistance decreases as temperature increases.
Passenger compartment sensor fan: The fan is powered by the climate control module (CCM).
Other information
Passenger compartment temperature sensor
Diagnostic trouble code B1A7111 is generated upon short circuit to ground.
Diagnostic trouble code B1A7115 is generated upon short circuit to supply voltage or open circuit.
Passenger compartment sensor fan
Diagnostic trouble code B105A11 is generated upon short circuit to ground.
Diagnostic trouble code B105A15 is generated upon short circuit or open circuit.
Diagnostic trouble code B105A71 is generated upon mechanical fault if something fastens in the rotor.
Scheme 11
| Breakout box connection | Connector terminal | Control module terminal | Signal type | Other |
|---|---|---|---|---|
| #1 | Reserve | |||
| #40 | #2 | #C1-16 | Ground | |
| #38 | #3 | #C1-14 | Passenger compartment temperature sensor (-) | |
| #28 | #4 | #C1-4 | Signal, passenger compartment sensor fan | |
| #30 | #5 | #C1-6 | Passenger compartment temperature sensor (+) |
Prerequisites (unless otherwise specified)
- Breakout box connected.
- Sensor connected.
- Ignition switch position 0.
Check 1
Passenger compartment temperature sensor
Measure resistance between terminals #30 and #38 on the breakout box. The value should follow the information below
R = 12.98 kohms at 18°C.
R = 12.47 kohms at 19°C.
R = 11.99 kohms at 20°C.
R = 11.53 kohms at 21°C.
R = 11.09 kohms at 22°C.
R = 10.67 kohms at 23°C.
Scheme 12
Type
Air quality sensor
characteristic
Air quality sensor
Other information
Air quality sensor
Diagnostic trouble code B102E09 is generated upon component fault.
Diagnostic trouble code B102E11 is generated upon short circuit to ground.
Diagnostic trouble code B102E12 is generated upon short circuit to supply voltage.
| Breakout box connection | Connector terminal | Control module terminal | Signal type | Other |
|---|---|---|---|---|
| #37 | #1 | C1-13 | PWM signal, air quality sensor | |
| #2 | Power supply | |||
| #40 | #3 | C1-16 | Ground |
Scheme 13
Type
Power-supplying motor: Linear output amplifier.
Fan motor: Electromagnetic motor.
characteristic
Voltage between terminals #25 and #26 on the breakout box should follow the table below during normal operation. Voltage may, however, be significantly higher during the first two minutes of fan motor operation.
| U bat (V) | Min (V) | Type (V) | Max. (V) |
|---|---|---|---|
| 12 | 2.25 | 2.38 | 2.50 |
| 12.5 | 2.31 | 2.44 | 2.55 |
Other information
The fan motor is supplied by a PWM signal from the climate control module (CCM) via the fan's control module. The control module ensures that the fan motor receives the correct voltage in reference to battery voltage and that the fan thereby obtains the desired speed.
Diagnostic trouble code B10B911 is generated when the control module circuit detects a short circuit to ground.
Diagnostic trouble code B10B912 is generated when the control module circuit detects a short circuit to supply voltage.
Diagnostic trouble code B10B913 when the control module circuit detects and open circuit.
| Breakout box connection | Connector terminal | Control module terminal | Signal type | Other |
|---|---|---|---|---|
| #25 | #1 | #C1-1 | Voltage, battery | |
| #26 | #2 | #C1-2 | Voltage, check | Converted PWM signal from the climate control module (CCM) |
Prerequisites (unless otherwise specified)
- Fan connected.
- Ignition switch position II.
Check 1
Check that the fan is operational by setting fan speed to 100% and listening. Sounds from the fan should be clearly audible.
The evaporator temperature sensor sends the current evaporator temperature to the engine control module (ECM) via the climate control module (CCM). The engine control module (ECM) then determines whether the compressor should be started.
Type
Temperature-dependent, NTC resistor (negative temperature coefficient).
Characteristic
Resistance between terminals #29 and #38 on the breakout box should be 3.44 kohms at +20 °C. Resistance decreases as temperature increases.
Other information
Diagnostic trouble code B1B7115 is generated upon short circuit to supply voltage or open circuit.
Diagnostic trouble code B1B7111 is generated upon short circuit to ground.
| Breakout box connection | Connector terminal | Control module terminal | Signal type | Miscellaneous |
|---|---|---|---|---|
| #17 | #1 | #C1-17 | Evaporator temperature sensor, signal (+) | |
| #16 | #2 | #C1-16 | Evaporator temperature sensor, signal (-) |
Prerequisites (unless otherwise specified)
- Breakout box connected.
- Sensor connected.
- Ignition switch position 0.
Check 1
Evaporator temperature sensor
Measure resistance between terminals #17 and #16 on the breakout box. The value should follow the information below
R = 3.44 kohms at 20°C.
R = 1.47 kohms at 40°C.
R = 336 ohms at 80°C.
R = 187 ohms at 100°C.
PASSENGER COMPARTMENT TEMPERATURE SENSOR (INTEGRATED IN THE CLIMATE CONTROL MODULE (CCM))
The passenger compartment temperature sensor continually provides the climate control module (CCM) information on passenger compartment temperature. To prevent the sensor from being affected by surround electronics, a fan is used to blow air from the passenger compartment onto the sensor.
Type
Passenger compartment temperature sensor: Temperature-dependent, NTC resistance (negative temperature coefficient).
Passenger compartment sensor fan: Electromagnetic motor.
Characteristic
passenger compartment temperature sensor: Resistance between terminal a and f shown below should be 12 kohms at +20°C. Resistance decreases as temperature increases.
Passenger compartment sensor fan: The fan is powered by the climate control module (CCM).
Scheme 14
Other information
Passenger compartment temperature sensor
Diagnostic trouble code B1A6111 is generated upon short circuit to ground.
Diagnostic trouble code B1A6115 is generated upon short circuit to supply voltage or open circuit.
Passenger compartment sensor fan
Diagnostic trouble code B105A11 is generated upon short circuit to ground.
Diagnostic trouble code B105A15 is generated upon short circuit or open circuit.
Diagnostic trouble code B105A71 is generated upon mechanical fault if something fastens in the rotor.
| Terminal | Component | Miscellaneous |
|---|---|---|
| A | Thermistor | Passenger compartment temperature sensor |
| B | Coil 1 | Passenger compartment sensor fan |
| C | Coil 1 | Passenger compartment sensor fan |
| D | Coil 2 | Passenger compartment sensor fan |
| E | Coil 2 | Passenger compartment sensor fan |
| F | Thermistor | Passenger compartment temperature sensor |
Prerequisites (unless otherwise specified)
- The fan/passenger compartment temperature sensor unit must be removed from the Climate control module (CCM) in order to gain access to take readings from the terminals.
Check 1
Passenger compartment temperature sensor
Measure the resistance between terminals a and f. The value should follow the information below
R = 28 kohms at 0°C.
R = 18 kohms at 10°C.
R = 12 kohms at 20°C.
R = 10 kohms at 25°C.
R = 8.2 kohms at 30°C.
R = 5.7 kohms at 40°C.
AIR QUALITY SENSOR 7/159
Type
Air quality sensor
Characteristic
Air quality sensor
Other information
Air quality sensor
Diagnostic trouble code B102E09 is generated upon component fault.
Diagnostic trouble code B102E11 is generated upon short circuit to ground.
Diagnostic trouble code B102E12 is generated upon short circuit to supply voltage.
| Breakout box connection | Connector terminal | Control module terminal | Signal type | Miscellaneous |
|---|---|---|---|---|
| #14 | #1 | C1-14 | PWM signal, air quality sensor | |
| #2 | Power supply | |||
| #3 | Ground |
VENTILATION FAN 6/28
Type
Power-supplying motor: Linear output amplifier.
Fan motor: Electromagnetic motor.
Characteristic
The voltage between terminal #1 and #12 on the breakout box varies linearly between 0 and 10 V, depending on the speed of the fan motor.
Other information
The fan motor is supplied by a PWM signal from the climate control module (CCM) via the fan's control module. The control module ensures that the fan motor receives the correct voltage in reference to battery voltage and that the fan thereby obtains the desired speed.
Diagnostic trouble code B10B911 is generated upon short circuit to ground.
Diagnostic trouble code B10B912 is generated upon short circuit to supply voltage.
DTC B10B913 is generated upon open circuit.
| Breakout box connection | Connector terminal | Control module terminal | Signal type | Miscellaneous |
|---|---|---|---|---|
| #1 | #1 | #C1-1 | Voltage, battery | |
| #12 | #2 | #C1-12 | Voltage, check | Converted PWM signal from the climate control module (CCM) |
Prerequisites (unless otherwise specified)
- Fan connected.
- Ignition switch position II.
Check 1
Check that the fan is operational by setting fan speed to 100% and listening. Sounds from the fan should be clearly audible.
| Connector terminal | Control module terminal | Signal type | Other |
|---|---|---|---|
| #3 | #3 in 8-pin internal connector | Overheating sensor, signal | |
| #7 | #7 in 8-pin internal connector | Overheating sensor, ground |
Scheme 15
Type
characteristic
Other information
None.
Scheme 16
| Connector terminal | Control module terminal | Signal type | Other |
|---|---|---|---|
| #1 | #1 in 2-pin internal connector | Glow plugs | |
| #2 | #2 in 2-pin internal connector | Glow plugs |
Scheme 17
Type
characteristic
Other information
None.
Scheme 18
| Connector terminal | Control module terminal | Signal Type | Other |
|---|---|---|---|
| Beneath control module | Combustion air fan | ||
| Beneath control module | Combustion air fan |
Scheme 19
Type
characteristic
Other information
None.
Scheme 20
| Connector terminal | Control module terminal | Signal type |
|---|---|---|
| #1 | #5 in 8-pin external connector | Fuel pump, control signal |
| #2 | Fuel pump, ground |
Scheme 21
Type
Characteristic
Other information
None.
Scheme 22
| Connector terminal | Control module terminal | Signal type |
|---|---|---|
| #1 | #3 in 3-pin external connector | Coolant pump, control signal |
| #2 | #2 in 3-pin external connector | Coolant pump, ground |