DTC 57-2: Right Clutch Electromagnetic Coil (Short)

WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Before you troubleshoot, review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Do the clutch function test with the HDS (see SH-AWD® FUNCTION TEST ).
Check for DTCs with the HDS.
Is DTC 57-2 indicated?

YES -Go to step 5.

NO -Intermittent failure, the system is OK at this time.
Turn the ignition switch to LOCK (0).
Disconnect SH-AWD control unit connector B (8P) and the right solenoid 4P connector.
Check for continuity between SH-AWD control unit connector terminals B6 and B7.

Fig 1: Checking Continuity Between SH-AWD Control Unit Connector Terminals B6 And B7
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Repair a short in the wires between SH-AWD control unit connector terminals B6 and B7.

NO -Go to step 8.
Turn the ignition switch to ON (II).
Measure the voltage between SH-AWD control unit connector terminal B6 and body ground.

Fig 2: Measuring Voltage Between SH-AWD Control Unit Connector Terminal B6 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there more than 0.5 V?

YES -Repair a short to power in the wires between SH-AWD control unit connector terminal B6 and the right clutch electromagnetic coil.

NO -Go to step 10.
Turn the ignition switch to LOCK (0).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Check the REAR DIFFERENTIAL FLUID TEMPERATURE in the DATA LIST is above 68°F (20°C) with the HDS before proceeding to the next step. If the temperature is below 68°F (20°C), drive the vehicle to warm up the rear differential until the fluid temperature becomes above 68°F (20°C).
Turn the ignition switch to LOCK (0).
Disconnect the right solenoid 4P connector.
Measure the resistance between right solenoid 4P connector terminals No. 1 and No. 2.

Fig 3: Measuring Resistance Between Right Solenoid 4P Connector Terminals No. 1 And No. 2
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there 0.45 Ω or less?

YES -Replace the rear differential right side case (see SIDE CASE REPLACEMENT ).

NO -Update the SH-AWD control unit if it does not have the latest software (see SH-AWD® CONTROL UNIT UPDATE ), or substitute a known-good SH-AWD control unit (see SH-AWD® CONTROL UNIT REPLACEMENT ), and recheck. If the symptom/indication goes away with the updated SH-AWD control unit, troubleshooting is complete. If the symptom/indication goes away with a known-good SH-AWD control unit, replace the original SH-AWD control unit (see SH-AWD® CONTROL UNIT REPLACEMENT ).