Acura RL. Manual - part 708

Fig. 155: Measuring Voltage Between PCM Connector Terminal E5 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES - Go to step 40.

NO - Go to step 34.

34. Turn the ignition switch OFF.

35. Remove the left kick panel (see step 3 under TRIM REMOVAL/INSTALLATION - DOOR

AREAS ). Then remove PGM-FI main relay 1 (Fl MAIN) (A) from the driver's under-dash fuse/relay
box.

Fig. 156: Identifying PGM-FI Main Relay 1 (Fl MAIN)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

36. Measure voltage between PGM-FI main relay 1 (Fl MAIN) 4P connector terminal No. 3 and body

ground.

2007 Acura RL

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

Friday, June 05, 2009 2:35:00 PM

Fig. 157: Measuring Voltage Between PGM-FI Main Relay 1 (Fl Main) 4P Connector Terminal
No. 3 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES - Go to step 37.

NO - Repair open in the wire between the No. 8 Fl ECU (PCM) (15A) fuse and PGM-FI main relay 1
(Fl MAIN)

37. Jump the SCS line with the HDS.

38. Disconnect PCM connector E (31P).

39. Check for continuity between PGM-FI main relay 1 (Fl MAIN) 4P connector terminal No. 4 and PCM

connector terminal E5.

Fig. 158: Checking Continuity Between PGM-FI Main Relay 1 (Fl Main) 4P Connector
Terminal 4 And PCM Terminal E5
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Test PGM-FI main relay 1 (Fl MAIN) (see POWER RELAY TEST ). If the relay is OK,
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 )

2007 Acura RL

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

Friday, June 05, 2009 2:35:00 PM

NO - Repair open in the wire between PGM-FI main relay 1 (Fl MAIN) and the PCM (E5)

40. Turn the ignition switch ON (II).

41. Measure voltage between body ground and PCM connector terminal A4.

Fig. 159: Measuring Voltage Between Body Ground And PCM Connector Terminal A4
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES - Go to step 50.

NO - Go to step 42.

42. Turn the ignition switch OFF.

43. Remove the left kick panel (see step 3 under TRIM REMOVAL/INSTALLATION - DOOR

AREAS ). Then remove PGM-FI main relay 1 (Fl MAIN) (A) from the driver's under-dash fuse/relay
box.

Fig. 160: Identifying PGM-FI Main Relay 1 (Fl MAIN)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

44. Turn the ignition switch ON (II).

45. Measure voltage between PGM-FI main relay 1 (Fl MAIN) 4P connector terminal No. 1 and body

ground.

2007 Acura RL

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

Friday, June 05, 2009 2:35:00 PM

Fig. 161: Measuring Voltage Between PGM-FI Main Relay 1 (Fl Main) 4P Connector Terminal
1 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES - Go to step 46.

NO - Repair open in the wire between the No. 8 Fl ECU (PCM) (15A) fuse and PGM-FI main relay 1
(FI MAIN)

46. Turn the ignition switch OFF.

47. Jump the SCS line with the HDS.

48. Disconnect PCM connector A (31P).

49. Check for continuity between PGM-FI main relay 1 (Fl MAIN) 4P connector terminal No. 2 and PCM

connector terminal A4.

Fig. 162: Checking Continuity Between PGM-FI Main Relay 1 (Fl Main) 4P Connector
Terminal 2 And PCM Connector Terminal A4
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Replace PGM-FI main relay 1 (Fl MAIN)

NO - Repair open in the wire between PGM-FI main relay 1 (Fl MAIN) and the PCM (A4)

50. Measure voltage between body ground and PCM connector terminals A1, A2, A3, and B15

2007 Acura RL

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

Friday, June 05, 2009 2:35:00 PM

Content .. 706 707 708 709 ..