2006 MERCEDES-BENZ SPRINTER Service Manual

Page 161 of 2305

MERCEDES-BENZ SPRINTER 2006  Service Manual Symptom:
CABIN HEATER CONTROL HIGH OR OPEN (ACTIVE)
POSSIBLE CAUSES
CABIN HEATER OR HEATER BOOSTER CONTROL UNIT
CABIN HEATER CONTROL CIRCUIT SHORTED TO VOLTAGE
AUTOMATIC TEMPERATURE CONTROL (ATC)
CABI

Page 162 of 2305

MERCEDES-BENZ SPRINTER 2006  Service Manual TEST ACTION APPLICABILITY
3 Turn the ignition off.
NOTE: Check connectors - Clean/repair as necessary.
Disconnect the Automatic Temperature Control (ATC) C1 harness connector.
Disconnect the Cabin Hea

Page 163 of 2305

MERCEDES-BENZ SPRINTER 2006  Service Manual Symptom:
CABIN HEATER CONTROL SHORTED LOW (ACTIVE)
POSSIBLE CAUSES
CABIN HEATER OR HEATER BOOSTER CONTROL UNIT
CABIN HEATER CONTROL CIRCUIT SHORTED TO GROUND
CABIN HEATER CONTROL CIRCUIT SHORTED TO GR

Page 164 of 2305

MERCEDES-BENZ SPRINTER 2006  Service Manual TEST ACTION APPLICABILITY
3 Turn the ignition off.
Disconnect the Cabin Heater or Heater Booster harness connector.
Disconnect the Automatic Temperature Control (ATC) C1 harness connector.
Measure the

Page 165 of 2305

MERCEDES-BENZ SPRINTER 2006  Service Manual Symptom:
CIRC PUMP CONTROL HIGH OR OPEN (ACTIVE)
POSSIBLE CAUSES
CIRCULATION PUMP
CIRCULATION PUMP CONTROL CIRCUIT SHORTED TO VOLTAGE
AUTOMATIC TEMPERATURE CONTROL (ATC)
CIRCULATION PUMP CONTROL CIRCU

Page 166 of 2305

MERCEDES-BENZ SPRINTER 2006  Service Manual TEST ACTION APPLICABILITY
3 Turn the ignition off.
NOTE: Check connectors - Clean/repair as necessary.
Disconnect the Automatic Temperature Control (ATC) C1 harness connector.
Disconnect the Circulati

Page 167 of 2305

MERCEDES-BENZ SPRINTER 2006  Service Manual Symptom:
CIRC PUMP CONTROL SHORTED LOW (ACTIVE)
POSSIBLE CAUSES
CIRCULATION PUMP CONTROL CIRCUIT SHORTED TO GROUND
CIRCULATION PUMP CONTROL CIRCUIT SHORTED TO GROUND CIRCUIT
CIRCULATION PUMP CONTROL C

Page 168 of 2305

MERCEDES-BENZ SPRINTER 2006  Service Manual TEST ACTION APPLICABILITY
4 Turn the ignition off.
Disconnect the Circulation Pump harness connector.
Connect a fused jumper wire between the Battery (+) and Circulation Pump cavity 2.
Connect a jumpe