Engine - MIL ON/Various DTC's Stored In Memory
SI B17 03 09Cooling System
October 2010
Technical Service
This Service Information bulletin supersedes SI B17 03 09 dated October 2009.
[NEW] designates changes to this revision
SUBJECT
N63 Turbocharger Auxiliary Water Pump Faults
MODEL
[NEW] F10 and F02 (7 series) with N63 or N74 engine
[NEW] F04 (ActiveHybrid 7) with N63
[NEW] F07 (5 Series Gran Turismo) with N63 engine
[NEW] F10 (5 series) with N63 engine
[NEW] E70, E71 (X5, X6) and E72 (ActiveHybrid X6) with N63 or S63 engine
[NEW] SITUATION
The Service Engine Soon lamp is illuminated with the following fault codes stored in the DME control module:
For N63, S63 E7x: (MSD85):
^ 0x2EA9 - 0x2EA9 Turbocharger coolant pump, control line, electrical, 0x1016 - open circuit
^ 0x2EAA - 0x2EAA Turbocharger coolant pump, shut-down
For N63, N74 F0x and F1X (MSD85L6):
^ 0x20A501 - 0x20A501 Turbocharger coolant pump, control line, electrical: short-circuit to positive
^ 0x20A502 - 0x20A502 Turbocharger coolant pump, control line, electrical: short-circuit to earth
^ 0x20A504 - 0x20A504 Turbocharger coolant pump, control line, electrical: open circuit
^ 0x20A601 - 0x20A601 Turbocharger coolant pump, control line, electrical: short-circuit to positive
^ 0x20A602 - 0x20A602 Turbocharger coolant pump, control line, electrical: short-circuit to earth
^ 0x20A604 - 0x20A604 Turbocharger coolant pump, control line, electrical: open circuit
^ 0x20A608 - 0x20A608 Turbocharger coolant pump, shut-down: pump jammed
CAUSE
An internal component fault of the auxiliary water pump will cause it to not power up intermittently.
[NEW] PROCEDURE
Check that the electrical connector to the coolant pump is locked-in properly and that there is battery voltage at the pump. If no fault can be found with the connector or supply voltage, replace the auxiliary water pump for the turbochargers with an improved pump (refer to parts information). Refer to Repair Instruction RA11 53 090 for replacement of the pump and proper coolant bleeding procedures.
[NEW] PARTS INFORMATION
WARRANTY INFORMATION