Chart A1-2 MIL Will Not Flash DTC's On Steady

MIL Will Not Flash Any DTCs, On Steady:

OBD Circuit:

Circuit Description:

The malfunction indicator lamp (MIL) will flash diagnostic trouble codes (DTCs) that are in the engine control module (ECM) memory when the data link connector (DLC) terminals "TE1" and "E1" are jumpered.

Test Description:

Number(s) below reler to circled number(s) on the diagnostic chart.

1. This checks for a short to ground in RED/YEL wire.

2. This checks for an open BLU/WHT (diagnostic request signal) wire.

3. This checks for an open in the BRN ground wire to the DLC or for a faulty ECM.

Diagnostic Aids:

An intermittent may be caused by a poor connection, rubbed through wire insulation, or a wire broken inside the insulation. Inspect harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals and poor terminal-to-wire connections before component replacement.