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Honda Ridgeline. Manual - part 106

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０８

−

YES

11-188

PGM-FI System

MIL Circuit Troubleshooting (cont’d)

PCM CONNECTOR B (44P)

IG1 (BLK/YEL)

PCM CONNECTOR B (44P)

IG1 (BLK/YEL)

35. Check for continuity between PCM connector

terminal B37 and body ground.

Go to step 36.

Replace the No. 19 IG FUEL PUMP (15 A) fuse,

and update the PCM if it does not have the latest
software (see page 11-7), or substitute a known-
good PCM (see page 11-8), then recheck. If the
symptom/indication goes away with a known-good
PCM, replace the original PCM (see page 11-205).

36. Remove PGM-FI main relay 2 (FUEL PUMP) (A)

from the driver’s under-dash fuse/relay box.

37. Check for continuity between PCM connector

terminal B37 and body ground.

Repair short in the wire between the No. 19

IG FUEL PUMP (15 A) fuse and the PCM (B37),
between the No. 19 IG FUEL PUMP (15 A) fuse and
PGM-FI main relay 2 (FUEL PUMP), or between the
No. 19 IG FUEL PUMP (15 A) fuse and the
immobilizer control unit-receiver. Also replace the
No. 19 IG FUEL PUMP (15 A) fuse.

Go to step 38.

38. Remove the rear seat (see page 20-117).

39. Remove the access panel from the floor.

40. Disconnect the fuel pump 5P connector.

Terminal side of female terminals

Is ther e continuity?

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１０

１１

−

YES

11-189

FUEL PUMP 5P CONNECTOR

FUEL PUMP
(YEL/GRN)

FUEL PUMP 5P CONNECTOR

FUEL PUMP
(YEL/GRN)

41. Check for continuity between fuel pump 5P

connector terminal No. 5 and body ground.

Repair short in the wire between the fuel

pump and PGM-FI main relay 2 (FUEL PUMP). Also
replace the No. 19 IG FUEL PUMP (15 A) fuse.

Go to step 42.

42. Reinstall PGM-FI main relay 2 (FUEL PUMP) (A).

43. Check for continuity between fuel pump 5P

connector terminal No. 5 and body ground.

Replace PGM-FI main relay 2 (FUEL PUMP).

Also replace the No. 19 IG FUEL PUMP (15 A)
fuse.

Check the fuel pump, and replace it if

necessary (see page 11-300). Also replace the
No. 19 IG FUEL PUMP (15 A) fuse.

44. Jump the SCS line with the HDS.

45. Disconnect PCM connectors A (44P) and B (44P).

46. Turn the ignition switch ON (II).

(cont’d)

Wire side of female terminals

Is ther e continuity?

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１４

１５

＋

−

YES

11-190

PGM-FI System

MIL Circuit Troubleshooting (cont’d)

PCM CONNECTOR B (44P)

IG1 (BLK/YEL)

PCM CONNECTOR A (44P)

MRLY (RED/YEL)

PGM-FI MAIN RELAY 1 (FI MAIN)
4P CONNECTOR

47. Measure voltage between PCM connector terminal

B37 and body ground.

Go to step 48.

Repair open in the wire between the No. 19 IG

FUEL PUMP (15 A) fuse and the PCM (B37).

48. Measure voltage between PCM connector terminal

A6 and body ground.

Go to step 54.

Go to step 49.

49. Turn the ignition switch OFF.

50. Remove PGM-FI main relay 1 (FI MAIN) (A) from

the under-dash fuse/relay box.

51. Measure voltage between PGM-FI main relay 1

(FI MAIN) 4P connector terminal No. 3 and body
ground.

Go to step 52.

Repair open in the wire between the No. 8

FI ECU (PCM) (15 A) fuse and PGM-FI main
relay 1 (FI MAIN).

Terminal side of female terminals

Is ther e batter y voltage?

１６

１７

１８

１９

−

YES

11-191

PGM-FI MAIN RELAY 1 (FI MAIN)
4P CONNECTOR

MRLY

JUMPER WIRE

PCM CONNECTOR A (44P)

MRLY (RED/YEL)

PCM CONNECTOR B (44P)

IGP (YEL/BLK)

52. Connect PGM-FI main relay 1 (FI MAIN) 4P

connector terminal No. 4 to body ground with a
jumper wire.

53. Check for continuity between PCM connector

terminal A6 and body ground.

Test PGM-FI main relay 1 (FI MAIN)

(see page 22-75). If the relay is OK, update the PCM
if it does not have the latest software (see page
11-7), or substitute a known-good PCM (see page
11-8), then recheck. If the symptom/indication goes
away with a known-good PCM, replace the original
PCM (see page 11-205).

Repair open in the wire between PGM-FI main

relay 1 (FI MAIN) and the PCM (A6).

54. Reconnect PCM connector A (44P).

55. Turn the ignition switch ON (II).

56. Measure voltage between body ground and PCM

connector terminal B3.

Go to step 64.

Go to step 57.

57. Turn the ignition switch OFF.

58. Remove PGM-FI main relay 1 (FI MAIN) (A) from

the under-dash fuse/relay box.

59. Turn the ignition switch ON (II).

(cont’d)

Terminal side of female terminals

Is ther e continuity?

Is ther e batter y voltage?

Content .. 104 105 106 107 ..