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HOMESERVICE MANUALSOLDSMOBILE1998EIGHTY-EIGHT V6-3.8L VIN KREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSINFORMATION BUSDESCRIPTION AND OPERATIONELECTRONIC BRAKE AND TRACTION CONTROL MODULE (EBTCM)
1998 Oldsmobile Eighty-Eight V6-3.8L VIN K
Electronic Brake and Traction Control Module (EBTCM)
1998 Oldsmobile Eighty-Eight V6-3.8L VIN KSECTION Electronic Brake and Traction Control Module (EBTCM)
DESCRIPTION
Electronic Brake and Traction Control Module (EBTCM) / Electronic Brake Control Module (EBCM) - PCM Class 2 Serial Data
The PCM uses the Class 2 serial data line to communicate with various other components and systems within the vehicle. The PCM ensures that communication remains established by monitoring the Class 2 serial data circuit for state of health messages from the other devices using the circuit. If the PCM detects a loss of the state of health serial data message from the Electronic Brake and Traction Control Module (EBTCM), the PCM will store DTC P1602.
ROUGH ROAD INFORMATION
The PCM also receives rough road information from the EBTCM / EBCM on the Class 2 serial data circuit. The PCM uses the rough road information to enhance the misfire diagnostic by detecting crankshaft speed variations caused by driving on rough road surfaces. This allows false misfire information to be rejected. The EBTCM / EBCM calculates rough road information by monitoring the ABS wheel speed sensors. If a malfunction occurs occurs which does not allow the EBTCM / EBCM to transmit correct rough road information to the PCM while a misfire DTC is requesting the Malfunction Indicator Lamp (MIL), DTC P1380 will set. If a loss of communications occurs which causes the PCM to not receive rough road information while a misfire DTC is requesting the MIL, DTC P1381 will set.
CONDITIONS THAT SHUT DOWN TRACTION CONTROL
Under certain conditions, the PCM has the ability to request the EBTCM to shut OFF traction control via Class 2 serial data, The following DTCs will cause traction control to be disabled, an ABS/TCS DTC to be set, and the Traction OFF lamp to be illuminated:
^ DTC P0101 - Mass Air Flow System Performance
^ DTC P0102 - Mass Air Flow Sensor Circuit Low Frequency
^ DTC P0103 - Mass Air Flow Sensor Circuit High Frequency
^ DTC P0171 - Fuel Trim System Lean
^ DTC P0172 - Fuel Trim System Rich
^ DTC P0300 - Engine Misfire Detected
^ DTC P0336 - 18x Reference Signal Circuit
^ DTC P0341 - Camshaft Position Sensor Performance
^ DTC P1200 - Injector Control Circuit
^ DTC P1374 - 3X Reference Circuit
Refer to ABS/TCS in Antilock Brake System and Traction System for information regarding ABS/TCS operation.
Electronic Brake and Traction Control Module (EBTCM) / Electronic Brake Control Module (EBCM) - PCM Class 2 Serial Data
The PCM uses the Class 2 serial data line to communicate with various other components and systems within the vehicle. The PCM ensures that communication remains established by monitoring the Class 2 serial data circuit for state of health messages from the other devices using the circuit. If the PCM detects a loss of the state of health serial data message from the Electronic Brake and Traction Control Module (EBTCM), the PCM will store DTC P1602.
ROUGH ROAD INFORMATION
The PCM also receives rough road information from the EBTCM / EBCM on the Class 2 serial data circuit. The PCM uses the rough road information to enhance the misfire diagnostic by detecting crankshaft speed variations caused by driving on rough road surfaces. This allows false misfire information to be rejected. The EBTCM / EBCM calculates rough road information by monitoring the ABS wheel speed sensors. If a malfunction occurs occurs which does not allow the EBTCM / EBCM to transmit correct rough road information to the PCM while a misfire DTC is requesting the Malfunction Indicator Lamp (MIL), DTC P1380 will set. If a loss of communications occurs which causes the PCM to not receive rough road information while a misfire DTC is requesting the MIL, DTC P1381 will set.
CONDITIONS THAT SHUT DOWN TRACTION CONTROL
Under certain conditions, the PCM has the ability to request the EBTCM to shut OFF traction control via Class 2 serial data, The following DTCs will cause traction control to be disabled, an ABS/TCS DTC to be set, and the Traction OFF lamp to be illuminated:
^ DTC P0101 - Mass Air Flow System Performance
^ DTC P0102 - Mass Air Flow Sensor Circuit Low Frequency
^ DTC P0103 - Mass Air Flow Sensor Circuit High Frequency
^ DTC P0171 - Fuel Trim System Lean
^ DTC P0172 - Fuel Trim System Rich
^ DTC P0300 - Engine Misfire Detected
^ DTC P0336 - 18x Reference Signal Circuit
^ DTC P0341 - Camshaft Position Sensor Performance
^ DTC P1200 - Injector Control Circuit
^ DTC P1374 - 3X Reference Circuit
Refer to ABS/TCS in Antilock Brake System and Traction System for information regarding ABS/TCS operation.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.