2006 MERCEDES-BENZ SPRINTER heater

8.6.2 CABIN HEATER & HEATER BOOSTER SYSTEM COMPONENTS
8.6.3 AUTO TEMP CONTROL, CABIN HEATER, & HEATER BOOSTER FUSES & RELAYS
8.6.4 EVAP TEMP SENSOR & AIR OUTLET TEMP SENSOR
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COMPONENT LOCATIONS

AUTOMATIC TEMPERATURE CONTROL MODULE C1 - BROWNCAV CIRCUIT FUNCTION
1 16RD/BL FUSED B(+)
2 18DG/RD (REST SYSTEM) CIRCULATION PUMP CONTROL
3 18BK/RD A/C AUXILIARY FAN RELAY HIGH SIDE CONTROL
4 16BL/YL HEATER BOOSTER MODE
5 18BR/VT WATER CYCLE VALVE CONTROL
6 20RD/BL 5 VOLT SUPPLY
7 18BK/YL K-IC/ATC/HBM/CHM
8 16RD/YL/WT FUSED D(+) RELAY OUTPUT
8 20BL/VT D(+) RELAY CONTROL
9 16GY/DG/RD LAMP DRIVER
10 16BL CABIN HEATER CONTROL
11 16BK/BL/WT RECIRCULATED AIR SOLENOID VALVE CONTROL
12 16BL/DG A/C COMPRESSOR CLUTCH CONTROL
13 18BR/DG EVAPORATOR TEMPERATURE SENSOR SIGNAL
14 - -
15 16BR GROUND
16 18BR/GY AIR OUTLET TEMPERATURE SENSOR SIGNAL
17 20DG/WT CAN C BUS (+)
18 18BR/BL SENSOR GROUND
19 20BR/RD REFRIGERANT PRESSURE SENSOR FEEDBACK
20 20DG CAN C BUS (-)
21 16BK/BL/DG FUSED IGNITION SWITCH OUTPUT
AUTOMATIC TEMPERATURE CONTROL MODULE C2CAV CIRCUIT FUNCTION
1 14BK/VT FAN STAGE 1 RELAY OUTPUT
1 12YL BLOWER MOTOR LOW DRIVER
2 12WT BLOWER MOTOR HIGH DRIVER
3 12WT/BK BLOWER MOTOR M1 DRIVER
4 12YL/BK BLOWER MOTOR M2 DRIVER
5 12RD/BL FUSED B(+)
AUXILIARY HEATER CONTROLCAV CIRCUIT FUNCTION
1 16GY/DG/RD LAMP DRIVER
2- -
3 16RD/YL FUSED B(+)
4- -
5- -
6- -
7 16YL CABIN HEATER CONTROL
8- -
9- -
10 16BR GROUND
BLOWER MOTOR RESISTOR BLOCKCAV CIRCUIT FUNCTION
1 12YL/BK BLOWER MOTOR M2 DRIVER
2 12YL BLOWER MOTOR LOW DRIVER
3 12WT/BK BLOWER MOTOR M1 DRIVER
4 12DG BLOWER MOTOR HIGH DRIVER
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CONNECTOR PINOUTS

CENTRAL TIMER MODULE C2 - LT. GREENCAV CIRCUIT FUNCTION
1- -
2- -
3 16WT/DG PASSENGER DOOR AJAR INDICATOR DRIVER
4- -
5- -
6 16WT/RD MASTER DOOR LOCK SWITCH SENSE-PASSENGER DOORS
7 16DG/BK LEFT SLIDING DOOR UNLOCK SENSE
8- -
9- -
10 16DG/RD REAR DOOR UNLOCK SENSE
11 16YL/WT LEFT SLIDING DOOR LOCK SENSE
12 16YL/BK REAR DOOR LOCK SENSE
13 16YL/RD RIGHT SLIDING DOOR LOCK SENSE
14 16DG/YL RIGHT SLIDING DOOR UNLOCK SENSE
15 - -
16 - -
17 16BK/RD PASSENGER DOORS UNLOCK DRIVER (+)
18 16BL/RD PASSENGER DOORS LOCK DRIVER (+)
CIRCULATION PUMP (CABIN HEATER MODULE)CAV CIRCUIT FUNCTION
1 18DG/RD CIRCULATION PUMP RELAY OUTPUT
2 18BR GROUND
CIRCULATION PUMP (REST SYSTEM)CAV CIRCUIT FUNCTION
1 18DG/RD CIRCULATION PUMP CONTROL
2 18BR GROUND
CIRCULATION PUMP DIODECAV CIRCUIT FUNCTION
3 18DG/RD CIRCULATION PUMP RELAY OUTPUT
4 18DG/BK (CABIN HEATER
MODULE)CIRCULATION PUMP RELAY OUTPUT
4 18BK (EXCEPT PROGRAM
TIMER)FUSED OPTIONAL EQUIPMENT RELAY OUTPUT
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CONNECTOR PINOUTS

A/C AUXILIARY FAN RELAY (RELAY BLOCK)CAV CIRCUIT FUNCTION
30 14BL/YL FUSED B(+)
85 18BR GROUND
86 18BK/RD A/C AUXILIARY FAN RELAY CONTROL
87 14DG/BK A/C AUXILIARY FAN RELAY OUTPUT
87A --
CIRCULATION PUMP RELAY-CABIN HEATER MODULE (RELAY BLOCK)CAV CIRCUIT FUNCTION
30 18DG/BK CIRCULATION PUMP RELAY OUTPUT
85 16BR GROUND
86 16BL/YL CIRCULATION PUMP RELAY HIGH SIDE CONTROL
87 16RD/BL FUSED B(+)
87A 16BK/YL FUSED IGNITION SWITCH OUTPUT (RUN-START)
D+ RELAY NO. 2 (RELAY BLOCK)CAV CIRCUIT FUNCTION
30 14RD FUSED B(+)
85 16RD/BK FUSED D(+) RELAY NO. 1 OUTPUT
86 16BR GROUND
87 14BL/YL D(+) RELAY NO. 2 OUTPUT
87A --
FAN STAGE 1 RELAY (RELAY BLOCK)CAV CIRCUIT FUNCTION
30 14BK/VT FAN STAGE 1 RELAY OUTPUT
85 16BR GROUND
86 16BL/YL FAN STAGE 1 RELAY HIGH SIDE CONTROL
87 16RD/WT FUSED B(+)
87A --
OPTIONAL EQUIPMENT RELAY (RELAY BLOCK)CAV CIRCUIT FUNCTION
30 10RD FUSED B(+)
85 16BR GROUND
86 16BK/YL FUSED IGNITION SWITCH OUTPUT (RUN-START)
87 10BK OPTIONAL EQUIPMENT RELAY OUTPUT
87A --
REMOTE KEYLESS ENTRY ANTENNACAV CIRCUIT FUNCTION
1 20BR RKE ANTENNA
3 - GROUND
SEAT BELT SWITCHCAV CIRCUIT FUNCTION
1 16BR GROUND
2 20YL/RD SEAT BELT SWITCH SIGNAL
3- -
4- -
5- -
6- -
7- -
8- -
9- -
10 - -
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CONNECTOR PINOUTS

SEAT BELT TENSIONER-DRIVER - YELLOWCAV CIRCUIT FUNCTION
1 20BL DRIVER SEAT BELT TENSIONER LINE 2
2 20BR/YL DRIVER SEAT BELT TENSIONER LINE 1
SEAT BELT TENSIONER-PASSENGER - YELLOWCAV CIRCUIT FUNCTION
1 20BL PASSENGER SEAT BELT TENSIONER LINE 2
2 20BR PASSENGER SEAT BELT TENSIONER LINE 1
SECURITY SYSTEM MODULE C1 - BROWNCAV CIRCUIT FUNCTION
1 16BK/WT LEFT TURN SIGNAL
2- -
3- -
4 16BK/DG RIGHT TURN SIGNAL
5 16BK/VT FAN STAGE 1 RELAY
6 16WT/RD WARM AIR AUXILIARY HEATER CONTROL
7 16RD/GY FUSED B(+)
8 16BK/GY FUSED OPTIONAL EQUIPMENT RELAY OUTPUT
9 18VT/DG TOWING/INTRUSION SENSOR INDICATOR DRIVER
10 - -
11 16BR/YL FRONT COURTESY LAMPS CONTROL
12 16BR/WT DOOR AJAR SWITCH SENSE
13 16RD/DG FUSED B(+)
14 16BK/BL HOOD AJAR SWITCH SENSE
15 18GY/WT PANIC SWITCH SENSE
16 16BR GROUND
17 18GY/BR TOWING SENSOR SWITCH SENSE
18 18GY/YL INTRUSION SENSOR SWITCH SENSE
19 - -
20 16BK DRIVER CYLINDER UNLOCK SENSE
21 16RD DRIVER CYLINDER LOCK SENSEC
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CONNECTOR PINOUTS

10.3.2 CABIN HEATER MODULE (CHM)
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SCHEMATIC DIAGRAMS

10.3.3 HEATER BOOSTER MODULE (HBM)
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SCHEMATIC DIAGRAMS
10.3 HEATING & A/C (Continued)

TABLE OF CONTENTS - Continued
P1617- ECM WRITE ERROR..............................................16
P1617-ECM INCORRECT VALUE..........................................16
P1617-ECM READ ERROR...............................................16
P2122-INTERNAL ERROR COUNTER FAULT................................16
P2122-INTERNAL ERROR ENGINE SHUT OFF..............................16
P2122-INTERNAL ERROR ENGINE VOLTAGE MONITORING...................16
P2122-INTERNAL ERROR ENGINE VOLTAGE MONITORING...................16
P2123-INJECTOR BANK ERROR..........................................16
P2124-INJECTOR BANK ERROR..........................................16
P2139-ECM INJECTOR OUTPUT STAGE #1.................................16
P2139-ECM INJECTOR OUTPUT STAGE #1 SHORT CIRCUIT..................16
P2140-ECM INJECTOR OUTPUT STAGE #2.................................16
P2140-ECM INJECTOR OUTPUT STAGE #2 SHORT CIRCUIT..................16
P2149-ECM A/D CONVERTER HIGH.......................................16
P2149-ECM A/D CONVERTER LOW........................................16
P2149-ECM A/D CONVERTER PLAUSIBILITY................................16
P2153-STARTER RELAY CIRCUIT ECM THERMAL OVERLOAD................16
P2197-FUEL QUANTITY SOLENOID ECM THERMAL OVERLOAD...............16
P2214-CAN MESSAGE ERROR...........................................16
P2319-ECM INTERNAL ERROR 1..........................................16
P2319-ECM INTERNAL ERROR 2..........................................16
P2319-ECM INTERNAL ERROR 3..........................................16
P2319-ECM INTERNAL ERROR 4..........................................16
P2321-ECM INTERNAL ERROR 5..........................................16
P2323-ECM INTERNAL ERROR...........................................16
P2324-ECM INJECTOR MONITORING 1....................................16
P2324-ECM INJECTOR MONITORING 2....................................16
P2324-ECM INJECTOR MONITORING 3....................................16
P2324-ECM INJECTOR MONITORING 4....................................16
P2324-ECM INJECTOR UNDERVOLTAGE...................................16
P2325-ECM INTERNAL ERROR 1..........................................16
P2325-ECM INTERNAL ERROR 2..........................................16
P2325-ECM INTERNAL ERROR 3..........................................16
P2325-ECM INTERNAL ERROR 4..........................................16
P2329-ECM INTERNAL ERROR 1..........................................16
P2330-ECM INTERNAL ERROR 1..........................................16
P2340-ECM INJECTION QUANTITY ERROR.................................16
P2342-ECM INTERNAL ERROR 1..........................................16
P2342-ECM INTERNAL ERROR 2..........................................17
P2350-INTERNAL VOLTAGE ERROR.......................................17
P2352-INJECTION FAULT - EXCESSIVE TEMPERATURE......................17
P2352-INJECTION FAULT - QUANTITY ERROR..............................17
P2352-INJECTION FAULT - TORQUE LIMIT.................................17
P2352-INJECTION FAULT EXCESSIVE ENGINE SPEED.......................17
P2354-ECM INTERNAL FAULT............................................17
P2356-ECM INTERNAL ERROR...........................................17
P2357-ECM INTERNAL ERROR...........................................17
P2358-ECM INTERNAL ERROR...........................................17
P2500-FUEL PRESSURE SOLENOID CIRCUIT EXCESSIVE CURRENT..........17
P2514-CRANKCASE VENT HEATER EXCESSIVE CURRENT...................17
P2526-BOOST PRESSURE SERVO MOTOR EXCESSIVE CURRENT............17
P2527-EGR VALVE EXCESSIVE CURRENT.................................17
P0100-MASS AIR FLOW SENSOR SIGNAL VOLTAGE TOO LOW...............19
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