PGM-FI System

DTC Troubleshooting (cont'd)

11-384  

  1. Measure voltage between the injector 2P connector terminal No. 1 and body ground.

INJECTOR 2P CONNECTOR

Wire side of female terminals

Is there battery voltage?

YES

- Go to step 47.

NO

- Repair open in the wire between the injector and the PGM-FI main relay.


  1. Turn the ignition switch OFF.
  2. Check for continuity between body ground and the appropriate ECM/PCM connector terminal (see table).

ECM/PCM CONNECTOR B (24P)

Wire side of female terminals

PROBLEM CYLINDER

DTC

ECM/PCM TERMINAL

WIRE COLOUR

No. 1

P0301

B5

BRN

No. 2

P0302

B4

RED

No. 3

P0303

B3

BLU

No. 4

P0304

B2

YEL


Is there continuity?

YES

- Repair short in the wire between the ECM/PCM and the injector.

NO

- Go to step 49.


  1. Connect the appropriate injector 2P connector terminal No. 2 to body ground with a jumper wire (see table).

INJECTOR 2P CONNECTOR

Wire side of female terminals

PROBLEM CYLINDER

DTC

WIRE COLOUR

No. 1

P0301

BRN

No. 2

P0302

RED

No. 3

P0303

BLU

No. 4

P0304

YEL


  1. Check for continuity between body ground and the appropriate ECM/PCM connector terminal (see table).

ECM/PCM CONNECTOR B (24P)

Wire side of female terminals

PROBLEM CYLINDER

DTC

ECM/PCM TERMINAL

WIRE COLOUR

No. 1

P0301

B5

BRN

No. 2

P0302

B4

RED

No. 3

P0303

B3

BLU

No. 4

P0304

B2

YEL


Is there continuity?

YES

- Replace the injector, then recheck.

NO

- Repair open in the wire between the ECM/PCM and the injector.