Acura RL. Manual - part 712

Are any B-CAN DTCs indicated?  

YES - Go to the indicated DTCs troubleshooting 

NO - Go to step 15. 

15. Turn the ignition switch OFF.  

16. Disconnect the HDS from the DLC.  

17. Check for continuity between DLC terminal No. 7 and body ground. 

Fig. 183: Checking Continuity Between DLC Terminal No. 7 And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there 5 ohms or less?  

YES - Go to step 18. 

NO - Go to step 19. 

18. Continue to check for continuity between DLC terminal No. 7 and body ground, while disconnecting 

these parts, one at a time: 



SRS unit connector A (28P)  



VSA modulator-control unit 46P connector  



SH-AWD control unit connector A (26P)  



TPMS control unit connector B (20P)  



MICU connector P (30P)  



ACC unit 20P connector  

Does continuity go away when one of the above components is disconnected?  

YES - Replace the part that caused an open when it was disconnected 

NO - Repair short in the wire between the DLC (K-line) and the VSA modulator-control unit, the SH-
AWD control unit, the TPMS control unit, or the ACC unit 

19. Connect DLC terminal No. 7 to body ground with a jumper wire. 

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

  

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Fig. 184: Connecting DLC Terminal No. 7 To Body Ground With Jumper Wire 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

20. Check for continuity between body ground and these connector terminals: 

CONNECTOR TERMINAL REFERENCE 

Is there continuity between the DLC terminal and each of the terminals in the chart?  

YES - Replace the unit that does not communicate with the HDS 

NO - Repair open in the wire between the DLC (K-line) and the appropriate connector 

21. Do the gauge self-diagnostic function (see SELF-DIAGNOSTIC FUNCTION ) to make sure the 

gauge is known-good. If the function test is OK, go to step 22.  

22. Check for B-CAN system DTCs without the HDS (see GENERAL TROUBLESHOOTING 

INFORMATION ). 

Is DTC B1168, B1169, and/or B1178 indicated?  

YES - Go to step 35. 

NO - Go to step 23. 

23. Turn the ignition switch OFF.  

24. Disconnect the HDS from the DLC.  

25. Measure voltage between DLC terminal No. 16 and body ground. 

Connector

Terminal

SRS unit A (28P)

No. 24 (RED)

VSA modulator-control unit 46P No. 11 (LTBLU)
SH-AWD control unit A (26P)

No. 15(LTBLU)

TPMS control unit B (20P)

No. 9 (LTBLU)

MICU 30P

No. 6 (RED)

ACC unit 20P

No. 8 (RED)

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

  

me 

 

Friday, June 05, 2009 2:35:00 PM

Page 191  © 2005 Mitchell Repair Information Company, LLC. 

Fig. 185: Measuring Voltage Between DLC Terminal No. 16 And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there battery voltage?  

YES - Go to step 26. 

NO - Repair open in the wire between DLC terminal No. 16 and the No. 8 Fl ECU (PCM) (15A) fuse 
in the under-hood fuse/relay box 

26. Measure voltage between DLC terminals No. 4 and No. 16. 

Fig. 186: Measuring Voltage Between DLC Terminals No. 4 And No. 16 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there battery voltage?  

YES - Go to step 27. 

NO - Repair open in the wire between DLC terminal No. 4 and G501 

27. Connect the HDS to the DLC (see GENERAL TROUBLESHOOTING INFORMATION ).  

28. Jump the SCS line with the HDS.  

29. Disconnect PCM connector E (31P).  

30. Disconnect the HDS from the DLC.  

31. Connect DLC terminal No. 6 to body ground with a jumper wire. 

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

  

me 

 

Friday, June 05, 2009 2:35:00 PM

Page 192  © 2005 Mitchell Repair Information Company, LLC. 

Fig. 187: Connecting DLC Terminal No. 6 To Body Ground With Jumper Wire 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

32. Check for continuity between PCM connector terminal E15 and body ground. 

Fig. 188: Checking Continuity Between PCM Connector Terminal E15 And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Go to step 33. 

NO - Repair open in the wire between the PCM (E15) and DLC terminal No. 6 

33. Connect DLC terminal No. 14 to body ground with a jumper wire. 

Fig. 189: Connecting DLC Terminal No. 14 To Body Ground With Jumper Wire 
Courtesy of AMERICAN HONDA MOTOR CO., INC.

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

  

me 

 

Friday, June 05, 2009 2:35:00 PM

Page 193  © 2005 Mitchell Repair Information Company, LLC.