Acura CSX. Instruction — page 133

02

03

Connector

Terminal

YES

NO

YES

NO

YES

NO

11-206

PGM-FI System

DATA LINK CONNECTOR (DLC)

K-LINE (LT BLU)

JUMPER WIRE

DATA LINK CONNECTOR (DLC)

B (WHT)

23. Connect DLC terminal No. 7 to body ground with a

jumper wire.

24. Check for continuity between body ground and

these connector terminals:

SRS unit A (28P)

No. 24
(LT BLU)

ABS modulator-control unit
25P (with ABS)

No. 10
(LT BLU)

VSA modulator-control unit
37P (with VSA system)

No. 26
( LT BLU )

EPS control unit D (28P)

No. 17
(LT BLU)

Immobilizer-keyless control
unit 7P

No. 5 (LT BLU)

TPMS control unit 20P

No. 7 (LT BLU)

Audio unit 17P

No. 6 (LT BLU)

Under-dash fuse/relay box Q
(16P)

No. 8 (LT BLU)

Replace the part which cannot communicate

with the HDS.

Repair open in the wire between the DLC (K-

line) and the appropriate connector.

25. Do the gauge self-diagnostic function (see page

22-241).

26. Check for B-CAN system DTCs without the HDS

(see page 22-74).

Go to step 39.

Go to step 27.

27. Turn the ignition switch to LOCK (0).

28. Disconnect the HDS from the DLC.

29. Measure the voltage between DLC terminal No. 16

and body ground.

Go to step 30.

Repair open in the wire between DLC terminal

No. 16 and the No. 23 BACK UP (10 A) fuse in the
under-hood fuse/relay box.

Terminal side of female terminals

Terminal side of female terminals

Is ther e continuity between the body gr ound and
each of the ter minals in the char t?

Is DT C B1168, B1169, and/ or B117 8 indicated?

Is ther e batter y voltage?

08/08/21 14:21:55 61SNR030_110_0206

04

05

06

07

YES

NO

YES

NO

11-207

DATA LINK CONNECTOR (DLC)

B (WHT)

GND (BLK)

DATA LINK CONNECTOR (DLC)

JUMPER WIRE

CANH (WHT)

ECM/PCM CONNECTOR A (44P)

CANH (WHT)

DATA LINK CONNECTOR (DLC)

CANL (RED)

JUMPER WIRE

30. Measure the voltage between DLC terminals No. 4

and No. 16.

Go to step 31.

Repair open in the wire between DLC terminal

No. 4 and body ground (G502) (see page 22-32).

31. Connect the HDS to the DLC (see page 11-3).

32. Jump the SCS line with the HDS.

33. Disconnect ECM/PCM connector A (44P).

34. Disconnect the HDS from the DLC.

35. Connect DLC terminal No. 6 to body ground with a

jumper wire.

36. Check for continuity between ECM/PCM connector

terminal A36 and body ground.

Go to step 37.

Repair open in the wire between the ECM/

PCM (A36) and DLC terminal No. 6.

37. Connect DLC terminal No. 14 to body ground with a

jumper wire.

Terminal side of female terminals

Terminal side of female terminals

Terminal side of female terminals

Terminal side of female terminals

Is ther e batter y voltage?

Is ther e continuity?

08/08/21 14:21:56 61SNR030_110_0207

08

YES

NO

YES

NO

YES

NO

11-208

PGM-FI System

ECM/PCM CONNECTOR A (44P)

CANL (RED)

38. Check for continuity between ECM/PCM connector

terminal A37 and body ground.

Update the ECM/PCM if it does not have the

latest software (see page 11-227), or substitute a
known-good ECM/PCM (see page 11-7), then
recheck. If the symptom/indication goes away with
a known-good ECM/PCM, replace the original ECM/
PCM (see page 11-228).

Repair open in the wire between the ECM/

PCM (A37) and DLC terminal No. 14.

39. Try to start the engine.

Go to the F-CAN circuit troubleshooting

(see page 11-191).

Go to step 40.

40. Turn the ignition switch to LOCK (0).

41. Check the No. 2 IG MAIN (50 A) fuse in the under-

hood fuse/relay box.

Repair open in the wire between the No. 2 IG

MAIN (50 A) fuse and the ignition switch. If the wire
is OK, go to step 42.

Repair short in the wire between the No. 2 IG

MAIN (50 A) fuse and the under-hood fuse/relay
box. Also replace the No. 2 IG MAIN (50 A) fuse.

Terminal side of female terminals

Is ther e continuity?

Does the engine star t and idle smoothly?

Is the f use OK ?

08/08/21 14:21:56 61SNR030_110_0208

*01

05

YES

NO

YES

NO

11-209

C

PGM-FI MAIN RELAY 1 4P CONNECTOR

B

B

42. Inspect the No. 19 FI MAIN (15 A) fuse in the under-

hood fuse/relay box.

Go to step 49.

Go to step 43.

43. Remove the blown No. 19 FI MAIN (15 A) fuse from

the under-hood fuse/relay box.

44. Remove PGM-FI main relay 1 (C) from the under-

hood fuse/relay box.

45. Check for continuity between body ground and

PGM-FI main relay 1 4P connector terminals No. 1
and No. 3 individually.

Replace the under-hood fuse/relay box

(see page 22-65). Also replace the No. 19 FI MAIN
(15 A) fuse.

Go to step 46.

Terminal side of female terminals

Is the f use OK ?

Is ther e continuity?

08/08/21 14:21:56 61SNR030_110_0209

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