DTC B1632: MTR CONT Signal Error; DTC B1927: MTR CONT Signal Error

WARNING: This page is about a different car, the 2010 Acura TL and 2009 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.

Press the engine start/stop button to select the OFF mode.
Disconnect the electric steering lock 12P connector.
Measure the voltage between body ground and electric steering lock 12P connector terminal No. 6.

Fig 1: Measuring Voltage Between Body Ground And Electric Steering Lock 12P Connector Terminal No. 6
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES -Go to step 4.

NO -Go to step 8.
Disconnect keyless access control unit connector A (36P).
Measure the voltage between body ground and keyless access control unit connector A (36P) terminal No. 27.

Fig 2: Measuring Voltage Between Body Ground And Keyless Access Control Unit Connector A (36P) Terminal No. 27
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES -Go to step 6.

NO -Replace the keyless access control unit (see CONTROL UNIT INPUT TEST ).
Disconnect the remote slot control unit 40P connector.
Measure the voltage between body ground and remote slot control unit 40P connector terminal No. 12.

Fig 3: Measuring Voltage Between Body Ground And Remote Slot Control Unit 40P Connector Terminal No. 12
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES -Repair a short to power in the wire.

NO -Replace the remote slot control unit (see REMOTE SLOT CONTROL UNIT ).
Reconnect the electric steering lock 12P connector.
Disconnect keyless access control unit connector A (36P).
Measure the voltage between body ground and keyless access control unit connector A (36P) terminal No. 27.

Fig 4: Measuring Voltage Between Body Ground And Keyless Access Control Unit Connector A (36P) Terminal No. 27
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES -Replace the electric steering lock (see STEERING LOCK REPLACEMENT ).

NO -Go to step 11.
Reconnect keyless access control unit connector A (36P).
Clear the DTCs with the HDS.
Do this procedure 10 times: Press the engine start/stop button to select the OFF, ACC, ON, and OFF mode.
Check for DTCs with the HDS.
Are DTCs B1632 and/or B1927 indicated?

YES -Substitute a known-good remote slot control unit. If the symptom goes away, replace the original remote slot control unit (see REMOTE SLOT CONTROL UNIT ). If not, substitute a known-good keyless access control unit. If the symptom goes away, replace the original keyless access control unit (see CONTROL UNIT INPUT TEST ). If not, replace the electric steering lock (see STEERING LOCK REPLACEMENT ).

NO -Go to step 15.
Insert the remote into the remote slot.
Do this procedure 10 times: Press the engine start/stop button to select the OFF, ACC, ON, and OFF mode.
Check for DTCs with the HDS.
Are DTCs B1632 and/or B1927 indicated?

YES -Substitute a known-good remote slot control unit. If the symptom goes away, replace the original remote slot control unit (see REMOTE SLOT CONTROL UNIT ). If not, substitute a known-good keyless access control unit. If the symptom goes away, replace the original keyless access control unit (see CONTROL UNIT INPUT TEST ). If not, replace the electric steering lock (see STEERING LOCK REPLACEMENT ).

NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections.