Data Analysis
- Review test data obtained in test sequences. If all data is within limits, system is operating properly or complaint is no longer present. Proceed to step 4).
- If one or more test points are out of limits, perform COMPONENT DIAGNOSIS subroutine(s) indicated at bottom of appropriate column of data chart. Subroutines should be used in sequence from left to right.
- When a component is repaired or replaced, a retest is required. Retest should be started at DATA COLLECTION, TEST SEQUENCE I and run through TEST SEQUENCE III.
- If initial system check or subroutine is completed and cause of complaint is not found, verify that the problem still exists. If it does, repeat initial system check and/or appropriate COMPONENT DIAGNOSIS subroutine(s).
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- If problem does not exist, road test vehicle to try to create problem. Repeat initial system check and/or appropriate COMPONENT DIAGNOSIS subroutine(s).
- Once problem is corrected, reconnect all vacuum and electrical leads. Remove test equipment. If problem has not been corrected, go to COMPONENT DIAGNOSIS or repeat initial checks and/or check the starter, ignition, fuel, and emission systems. Also check engine mechanical condition.