Acura RL. Instruction — page 772

YES — Go to step 6.

NO — Go to step 8.

6. Measure the resistance between SH-AWD control unit connector terminals A4 and A17.

Fig. 147: Measuring Resistance Between SH-AWD Control Unit Connector Terminals A4 And
A17

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there 2.0 ohms or more?

YES — Go to step 7.

NO — Go to step 9.

7. Check for continuity between SH-AWD control unit connector terminal A4 and body ground.

Fig. 148: Checking Continuity Between SH-AWD Control Unit Connector Terminal A4 And
Body Ground

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES — Repair short in the wire between SH-AWD control unit connector terminal A4 and body
ground.

NO — Check for loose connector terminals at the SH-AWD control unit and repair if necessary. If the
connections are OK, substitute a known-good SH-AWD control unit (see SH-AWD CONTROL

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2005-08 DRIVELINE/AXLES Rear Differential — RL

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UNIT REPLACEMENT ) and recheck.

8. Connect a jumper wire between SH-AWD control unit connector terminals A4 and A17. Disconnect

the left search coil 2P connector, then check for continuity between left search coil 2P connector
terminals No. 1 and No. 2.

Fig. 149: Connecting Jumper Wire Between SH-AWD Control Unit Connector Terminals A4
And A17

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig. 150: Checking Continuity Between Left Search Coil 2P Connector Terminals No. 1 And No.
2

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

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

NO — Repair open in the wire between left search coil 2P connector terminals No. 1 and No. 2.

9. Disconnect the left search coil 2P connector, then check for continuity between left search coil 2P

connector terminals No. 1 and No. 2.

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2005-08 DRIVELINE/AXLES Rear Differential — RL

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Fig. 151: Checking Continuity Between Left Search Coil 2P Connector Terminals No. 1 And No.
2

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES — Repair short in the wire between SH-AWD control unit connector A and the left search coil
connector.

NO — Replace the rear differential side case (see SIDE CASE REPLACEMENT ).

DTC 81-3: LEFT CLUTCH ELECTROMAGNETIC COIL MAGNETIC FLUX
CHARACTERISTIC

1. Turn the ignition switch ON (II).

2. Make sure the HDS communicates with the vehicle and the SH-AWD control unit. If it doesn’t,

troubleshoot the DLC circuit; ’05-07 models (see ’05-07 MODELS ), ’08 model (see ’08 MODEL ).

3. Turn the ignition switch OFF.

4. Disconnect SH-AWD control unit connector A (26P).

5. Measure the resistance between SH-AWD control unit connector terminals A4 and A17.

Fig. 152: Measuring Resistance Between SH-AWD Control Unit Connector Terminals A4 And
A17

Courtesy of AMERICAN HONDA MOTOR CO., INC.

NOTE:

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

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2005-08 DRIVELINE/AXLES Rear Differential — RL

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Is there 2.0 ohms or less?

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

NO — Go to step 6.

6. Clear the DTC with the HDS.

7. Do the SH-AWD differential clutch torque memorization (see SH-AWD DIFFERENTIAL

CLUTCH TORQUE MEMORIZATION ).

8. Test-drive the vehicle at a speed of more than 1 mph (2 km/h) for at least 1 second.

9. Check for DTCs with the HDS.

Is DTC 81-1, 81-2, 82-1, and/or 82-2 indicated?

YES — Go to the indicated DTCs troubleshooting.

NO — Intermittent failure, the system is OK at this time.

DTC 82-1: RIGHT SEARCH COIL SENSOR MALFUNCTION

1. Turn the ignition switch ON (II).

2. Make sure the HDS communicates with the vehicle and the SH-AWD control unit. If it doesn’t,

troubleshoot the DLC circuit; ’05-07 models (see ’05-07 MODELS ), ’08 model (see ’08 MODEL ).

3. Clear the DTC with the HDS.

4. Turn the ignition switch OFF.

5. Turn the ignition switch ON (II).

6. Check for DTCs with the HDS.

Is DTC 82-1 indicated?

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

NO — Intermittent failure, the system is OK at this time.

DTC 82-2: RIGHT SEARCH COIL SENSOR (OPEN OR SHORT)

1. Turn the ignition switch ON (II).

2. Make sure the HDS communicates with the vehicle and the SH-AWD control unit. If it doesn’t,

troubleshoot the DLC circuit; ’05-07 models (see ’05-07 MODELS ), ’08 model (see ’08 MODEL ).

3. Turn the ignition switch OFF.

4. Disconnect SH-AWD control unit connector A (26P).

NOTE:

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

NOTE:

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

2007 Acura RL

2005-08 DRIVELINE/AXLES Rear Differential — RL

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