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6E–178 ENGINE DRIVEABILITY AND EMISSIONS DTC P0203 – Injector 3 Control Circuit (Cont'd) Step No Yes Value(s) Action 7 1. Disconnect the PCM connector for the affected injectors. 2. With a test light connected to B+, probe the affected injector driver circuit. Does the test light illuminate? — Go to Step 8 Go to Step 15 8 Repair short to ground in the injector driver circuit. Is the action complete? — Go to OBD System Check — 9 1. Disconnect the injector test connector. ohmmeter between the positive wire (red with blue Does the ohmmeter indicate continuity? — Go to Step 11 Go to Step 10 10 Repair the open injector harness wire or open injector. Is the action complete? — Verify repair — 11 At the PCM side of the injector test connector, check Was there a short to voltage? — Go to Step 12 Go to Step 13 12 Repair the short to voltage. Is the action complete? — Verify repair — 13 Check for an open circuit between the injector test Was there an open circuit? — Go to Step 14 Go to Step 15 14 Repair the open circuit. Is the action complete? — Verify repair — 15 Replace the PCM. IMPORTANT: The replacement PCM must be UBS 98model year Immobilizer Workshop Manual. Is the action complete? — Verify repair — |