B1912
DTC B1912 RIGHT OSM HORIZONTAL MOTOR OR SENSOR ERRORComponent Location:
GENERAL DESCRIPTION
Integrated Memory System (hereinafter referred to IMS) is a kind of convenience that memorize the fittest position of seat for driver, and restores it with just one memory switch. Equipment for Powerseat adjusting beside Powerseat ECU are input switch, four motors and sensors. According to input signal four motors adjusts horizontal position, inclination of the back of a seat, height of seat and position of brake pedal. Sensors for each motor detects position and delivers it to powerseat ECU.
DTC DESCRIPTION
The ECM sets DTC B1912 if signal voltage of right outside mirror horizontal sensor is out of range.
DTC Detecting Condition:
MONITOR DTC STATUS
1. Connect scantool to Data Link Connector (DLC).
2. Ignition "ON" & engine "OFF".
3. Select "Diagnostic Trouble Codes (DTCs)" mode and monitor "DTC Status" parameter.
4. Is the DTC B1912 present?
YES - Go to "Inspection & Repair" procedure.
NO - Fault is intermittent caused by poor contact in the sensor's and/or ECM's connector or was repaired and ECM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.
TERMINAL AND CONNECTOR INSPECTION
1. Many malfunctions in the electrical system are caused by poor harness and terminals.Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found?
YES - Repair as necessary and go to "Verification Vehicle Repair" procedure.
NO - Go to "W/Harness Inspection" procedure.Testing and Inspection
SIGNAL CIRCUIT INSPECTION
1. Check for open in harness
1. Ignition "OFF".
2. Disconnect right outside mirror.
3. Measure resistance between terminal "12" of ADM and chassis ground.
Specification : Approx. Infinity Ohms
4. Is the measured resistance within specifications?
YES - Go to "Power circuit Inspection" procedure.
NO - Check for short in signal harness. Repair as necessary and go to "Verification of Vehicle Repair" procedure.
POWER SUPPLY CIRCUIT INSPECTION
1. Motor Power circuit Inspection
1. Ignition "OFF"
2. Disconnect right outside mirror.
3. Measure resistance between terminal "9" of ADM and chassis ground.
4. Measure resistance between terminal "11" of ADM and chassis ground.
Specification : Approx. Infinity Ohms
5. Is the measured resistance within specifications?
YES - Go to "Sensor Power circuit Inspection" procedure.
NO - Check for short in signal harness. Repair as necessary and go to "Verification of Vehicle Repair" procedure.
2. Sensor Power circuit Inspection
1. Ignition "ON" & Engine "OFF"
2. Disconnect right outside mirror.
3. Measure voltage between terminal "16" of ADM and chassis ground.
Specification : Approx. 5 V
4. Is the measured voltage within specifications?
YES - Go to "Component Inspection" procedure.
NO - Check for open or short in harness. Repair as necessary and go to "Verification of Vehicle Repair" procedure.
COMPONENT INSPECTION
1. Check right outside mirror motor
1. Connect scantool to Data Link Connector (DLC).
2. Ignition "ON" & engine "OFF"
3. Select 'ACTUATION TEST' mode on scantool and press [F1] to start
4. Dose right outside mirror motor work properly?
YES - Go to "Check right outside mirror sensor" procedure.
NO - Substitute with a known-good right outside mirror and check for proper operation. If the problem is corrected, replace right outside mirror and then go to "Verification of Vehicle Repair" procedure.
2. Check right outside mirror sensor
1. Connect scantool to Data Link Connector (DLC).
2. Ignition "ON" & engine "OFF"
3. Measure voltage value between terminal "12" of outside mirror and chassis ground. While operating outside mirror switch.
Specification:
left end -> approx. 3.88 V,
right end -> approx. 1.0 V
4. Is the measured voltage within specifications?
YES - Go to "Check ADM" procedure.
NO - Substitute with a known-good right outside mirror and check for proper operation. If the problem is corrected, replace right outside mirror and then go to "Verification of Vehicle Repair" procedure.
3. Check ADM
1. Connect scantool to Data Link Connector (DLC).
2. Ignition "ON" & engine "OFF"
3. Measure voltage value between terminal "9.11" of outside mirror and chassis ground. While operating outside mirror switch.
Specification : 9 - 16 V
4. Is the measured voltage within specifications?
YES - Check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.
NO - Substitute with a known-good ADM and check for proper operation. If the problem is corrected, replace ADM and then go to "Verification of Vehicle Repair" procedure.
VERIFICATION OF VEHICLE REPAIR
After a repair, it is essential to verify that the fault has been corrected.
1. Connect scantool and select "Diagnostic Trouble Codes (DTCs)" mode and then clear DTC.
2. Operate the vehicle and monitor the DTC on the scantool.
3. Are any DTCs present?
YES - Go to the applicable troubleshooting procedure.
NO - System is performing to specification at this time.