shogun
04-13-2013, 10:10 PM
Engine Control Module Fault Code for Throttle Position Sensor
Model:
BMW E34 and E36 with M50 engines
Complaint:
The ‘check engine’ light is on, and in automatic transmission vehicles the failure indicator for transmission control module is on, and the transmission operates in the failsafe mode.
Remedy:
The idle speed control valve is to be replaced if:
-The engine control module has a fault code 12 (M50), or fault code 73 (M50TU), and transmission control module fault code 105 (only automatic transmission vehicles) is experienced.
-The throttle position sensor and its circuit have tested good, and
-No other outside influence can be found. (These include the floor mat pushed up against the pedal, a misadjusted throttle cable, or a misadjusted cruise control actuator assembly).
Coolant Temperature Sensor (NTC)
Model:
BMW E34 (M5) produced from October 1992 to December 1992
Complaint:
During production of the S38 engines the incorrect NTC coolant temperature sensors with a blue connector housing and tin plated electrical contacts may have been installed. Due to the vehicles’ wiring harness which connects to the NTC have gold plated connectors the two metals can corrode which will cause implausible signals to be transmitted to the DME control module, and adversely affect the driving characteristics.
Remedy:
Utilize the ‘Service Menu’ of the Dealer Communication System, enter the chassis number of the vehicle involved and based upon the response of the system either proceed with corrective action, or take no action at all. If action is necessary then:
-Remove the NTC coolant temperature sensor plug which is mounted in the coolant pipe above the exhaust manifold–blue connector.
-If the contacts on the NTC coolant temperature sensor are tin-plated then replace with a new NTC sensor with gold-plated contacts.
-Top off coolant level if necessary.
-If the sensors on the NTC are gold-plated the sensor does not need to be replaced.
Quality Monitoring M60 Oxygen Sensors
Model:
BMW E34 and BMW E38 with M60 B40 engines produced from September 1994 to August 1995
Complaint:
The oxygen sensors of the listed vehicles need to be replaced with new sensors as a quality monitoring gauge. The old sensors should be returned to the Warranty Parts return Centre with a copy of any DME fault codes if present.
Remedy:
Utilize the ‘Service Menu’ of the Dealer Communication System, enter the chassis number of the vehicle involved and based upon the response of the system either proceed with corrective action, or take no action at all. If action is necessary then:
-Obtain customer permission and signature to authorize the extraction of both left and right oxygen sensors.
-Read and print out DME faults.
Test/hex code printout procedure:
Select ‘3 service functions’ and right arrow button.
Select ‘1 test code’ and right arrow button.
Select ‘test code R’
Select print ‘diagnosis report’
-Ignore any oxygen sensor fault codes if present.
-Clear all fault codes stored in the DME
-Replace both oxygen sensors referring to the repair manual group 11 section.
from BMW sensor faults and problems (http://www.bba-reman.com/content.aspx?content=bmw_sensor_faults_and_problem s)
Model:
BMW E34 and E36 with M50 engines
Complaint:
The ‘check engine’ light is on, and in automatic transmission vehicles the failure indicator for transmission control module is on, and the transmission operates in the failsafe mode.
Remedy:
The idle speed control valve is to be replaced if:
-The engine control module has a fault code 12 (M50), or fault code 73 (M50TU), and transmission control module fault code 105 (only automatic transmission vehicles) is experienced.
-The throttle position sensor and its circuit have tested good, and
-No other outside influence can be found. (These include the floor mat pushed up against the pedal, a misadjusted throttle cable, or a misadjusted cruise control actuator assembly).
Coolant Temperature Sensor (NTC)
Model:
BMW E34 (M5) produced from October 1992 to December 1992
Complaint:
During production of the S38 engines the incorrect NTC coolant temperature sensors with a blue connector housing and tin plated electrical contacts may have been installed. Due to the vehicles’ wiring harness which connects to the NTC have gold plated connectors the two metals can corrode which will cause implausible signals to be transmitted to the DME control module, and adversely affect the driving characteristics.
Remedy:
Utilize the ‘Service Menu’ of the Dealer Communication System, enter the chassis number of the vehicle involved and based upon the response of the system either proceed with corrective action, or take no action at all. If action is necessary then:
-Remove the NTC coolant temperature sensor plug which is mounted in the coolant pipe above the exhaust manifold–blue connector.
-If the contacts on the NTC coolant temperature sensor are tin-plated then replace with a new NTC sensor with gold-plated contacts.
-Top off coolant level if necessary.
-If the sensors on the NTC are gold-plated the sensor does not need to be replaced.
Quality Monitoring M60 Oxygen Sensors
Model:
BMW E34 and BMW E38 with M60 B40 engines produced from September 1994 to August 1995
Complaint:
The oxygen sensors of the listed vehicles need to be replaced with new sensors as a quality monitoring gauge. The old sensors should be returned to the Warranty Parts return Centre with a copy of any DME fault codes if present.
Remedy:
Utilize the ‘Service Menu’ of the Dealer Communication System, enter the chassis number of the vehicle involved and based upon the response of the system either proceed with corrective action, or take no action at all. If action is necessary then:
-Obtain customer permission and signature to authorize the extraction of both left and right oxygen sensors.
-Read and print out DME faults.
Test/hex code printout procedure:
Select ‘3 service functions’ and right arrow button.
Select ‘1 test code’ and right arrow button.
Select ‘test code R’
Select print ‘diagnosis report’
-Ignore any oxygen sensor fault codes if present.
-Clear all fault codes stored in the DME
-Replace both oxygen sensors referring to the repair manual group 11 section.
from BMW sensor faults and problems (http://www.bba-reman.com/content.aspx?content=bmw_sensor_faults_and_problem s)