Acura RL. Manual - part 705

YES - Go to step 23. 

NO - Repair open in the wire between the PCM (E26)* and the ACC unit 

23. Reconnect gauge control module connector B (28P).  

24. Measure resistance between PCM connector terminals E15 and E26*. 

Fig. 141: Measuring Resistance Between PCM Connector Terminals E15 And E26 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there about 2.34-2.86 kohms?  

YES - Go to step 25. 

NO - Substitute a known-good gauge control module (see GAUGE CONTROL MODULE 
REPLACEMENT ). If the HDS identifies the vehicle, replace the original gauge control module (see 
GAUGE CONTROL MODULE REPLACEMENT ) 

25. Disconnect gauge control module connector B (28P).  

26. Reconnect the VSA modulator-control unit 47P connector.  

27. Measure resistance between PCM connector terminals E15 and E26*. 

Fig. 142: Measuring Resistance Between PCM Connector Terminals E15 And E26 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there about 108-132 kohms?  

YES - Go to step 28. 

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

  

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NO - Substitute a known-good VSA modulator-control unit (see VSA MODULATOR-CONTROL 
UNIT REMOVAL AND INSTALLATION ). If the HDS identifies the vehicle, replace the original 
VSA modulator-control unit (see VSA MODULATOR-CONTROL UNIT REMOVAL AND 
INSTALLATION ) 

28. Disconnect the VSA modulator-control unit 47P connector.  

29. Reconnect SH-AWD control unit connector A (26P).  

30. Measure resistance between PCM connector terminals E15 and E26*. 

Fig. 143: Measuring Resistance Between PCM Connector Terminals E15 And E26 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there about 2.34-2.86 kohms?  

YES - Go to step 31. 

NO - Substitute a known-good SH-AWD control unit (see SH-AWD CONTROL UNIT 
REPLACEMENT ). If the HDS identifies the vehicle, replace the original SH-AWD control unit (see 
SH-AWD CONTROL UNIT REPLACEMENT ) 

31. Disconnect SH-AWD control unit connector A (26P) (see SH-AWD CONTROL UNIT 

REPLACEMENT ).  

32. Reconnect the ACC unit 20P connector.  

33. Measure resistance between PCM connector terminals E15 and E26*. 

Fig. 144: Measuring Resistance Between PCM Connector Terminals E15 And E26 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there about 2.34-2.86 kohms?  

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

  

me 

 

Friday, June 05, 2009 2:35:00 PM

Page 163  © 2005 Mitchell Repair Information Company, LLC. 

YES - Go to step 34. 

NO - Substitute a known-good ACC unit (see ADAPTIVE CRUISE CONTROL (ACC) UNIT 
REMOVAL/INSTALLATION ). If the HDS identifies the vehicle, replace the original ACC unit 
(see ADAPTIVE CRUISE CONTROL (ACC) UNIT REMOVAL/INSTALLATION ) 

34. Disconnect the ACC unit 20P connector.  

35. Reconnect e-pretensioner unit connector B (14P).  

36. Measure resistance between PCM connector terminals E15 and E26*. 

Fig. 145: Measuring Resistance Between PCM Connector Terminals E15 And E26 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there about 2.34-2.86 kohms?  

YES - Go to step 37. 

NO - Substitute a known-good e-pretensioner unit (see E-PRETENSIONER UNIT 
REPLACEMENT ). If the HDS identifies the vehicle, replace the original e-pretensioner unit (see E-
PRETENSIONER UNIT REPLACEMENT ) 

37. Disconnect e-pretensioner unit connector B (14P).  

38. Reconnect TPMS unit connector B (20P).  

39. Measure resistance between PCM connector terminals E15 and E26*. 

Fig. 146: Measuring Resistance Between PCM Connector Terminals E15 And E26 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there about 2.34-2.86 kohms?  

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

  

me 

 

Friday, June 05, 2009 2:35:00 PM

Page 164  © 2005 Mitchell Repair Information Company, LLC. 

YES - Update the PCM if it does not have the latest software (see UPDATING THE PCM ), or 
substitute a known-good PCM (see SUBSTITUTING THE PCM ), then recheck. If the 
symptom/indication goes away with a known-good PCM, replace the original PCM (see PCM 
REPLACEMENT ) 

NO - Substitute a known-good TPMS unit (see TPMS INDICATOR OR TIRE(S) INDICATOR(S) 
DOES NOT GO OFF, AND NO DTCS ARE STORED ). If the HDS identifies the vehicle, replace 
the original TPMS unit (see TPMS INDICATOR OR TIRE(S) INDICATOR(S) DOES NOT GO 
OFF, AND NO DTCS ARE STORED ) 

40. Disconnect gauge control module connector B (28P) (see GAUGE CONTROL MODULE 

REPLACEMENT ).  

41. Disconnect the VSA modulator-control unit 47P connector (see VSA MODULATOR-CONTROL 

UNIT REMOVAL AND INSTALLATION ).  

42. Disconnect SH-AWD control unit connector A (26P) (see SH-AWD CONTROL UNIT 

REPLACEMENT ).  

43. Disconnect the ACC unit 20P connector (see ADAPTIVE CRUISE CONTROL (ACC) UNIT 

REMOVAL/INSTALLATION ).  

44. Disconnect e-pretensioner unit connector B (14P) (see E-PRETENSIONER UNIT 

REPLACEMENT ).  

45. Disconnect TPMS unit connector B (20P) (see TPMS INDICATOR OR TIRE(S) INDICATOR(S) 

DOES NOT GO OFF, AND NO DTCS ARE STORED ).  

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

Fig. 147: Checking Continuity Between PCM Connector Terminal E15 And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Repair short in the wire between the PCM connector terminal E15 and the gauge control 
module, the VSA modulator-control unit, the SH-AWD control unit, the ACC unit, the e-pretensioner 
unit, the TPMS unit, or the DLC 

NO - Go to step 47. 

47. Check for continuity between PCM connector terminal E26* and body ground. 

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

  

me 

 

Friday, June 05, 2009 2:35:00 PM

Page 165  © 2005 Mitchell Repair Information Company, LLC.