Diagnostic Procedure

DTC 14 Ignition Signal Circuit

DIAGNOSTIC PROCEDURE
1. CHECK FOR SPARK.
- If OK proceed to Step 2.
- If not OK proceed to Step 4.
2. CHECK FOR OPEN AND SHORT IN IGF SIGNAL CIRCUIT BETWEEN IGNITER AND ECM.
- If OK proceed to Step 3.
- If not OK repair or replace harness or connector.
3. CHECK VOLTAGE OF TERMINAL IGF.
^. If OK replace igniter.
- If not OK check and replace ECM.
4. CHECK VOLTAGE OF TERMINAL IGT (1 - 6).
^. If OK proceed to Step 5.
- If not OK proceed to Step 8.
5. CHECK VOLTAGE OF IGNITER POWER SOURCE.
^. If OK proceed to Step 6.
- If not OK check and repair igniter power source circuit.
6. CHECK FOR OPEN AND SHORT IN PRIMARY COIL CIRCUIT.
^. If OK proceed to Step 7.
- If not OK repair or replace harness or connector.
7. CHECK IGNITION COIL.
^. If OK replace igniter.
- If not OK replace ignition coil.
8. CHECK VOLTAGE OF TERMINAL IGT (1 - 6).
^. If OK replace igniter.
- If not OK proceed to Step 9.
9. CHECK FOR OPEN AND SHORT IN IGT (1 - 6) SIGNAL CIRCUIT BETWEEN IGNITER AND ECM.
^. If OK check and replace ECM.
- If not OK repair or replace harness or connector.