Check For Intermittent Problems - Toyota Corolla 2002 Repair Manual Supplement

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CHECK FOR INTERMITTENT PROBLEMS

HINT:
Inspect the vehicle's ECM using check mode. Intermittent problems are easier to detect with an intelligent
tester II when the ECM is in check mode. In check mode, the ECM uses 1 trip detection logic, which is more
sensitive to malfunctions than normal mode (default), that uses 2 trip detection logic.
(a) Clear DTCs
(b) Switch the ECM from normal mode to check mode using the intelligent tester II
(c) Perform a s imulation test
(d) Check and wiggle the harness(es), connector(s) and terminal(s)
COROLLA Supplement (RM1129E)
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DIAGNOSTICS
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TOYOTA COROLLA REPAIR MANUAL SUPP 1129E
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