Pinout Values and Diagnostic Parameters

26 Pin Connector:

22 Pin Connector:

ECM CONNECTOR WIRE COLORS

Component Values:

EXPECTED VALUES AT COMPONENT(S) WITH HARNESS DISCONNECTED

ECM Pin Values:

EXPECTED VALUES AT ECM WITH HARNESS DISCONNECTED

TESTING
The ECM harnesses are connected with two types of connectors each of which has specific numbers as shown. The following inspection procedures refer to the specific numbers:

NOTE: When checking the system, note the numbers carefully to avoid wrong connections since battery power is applied to some terminals only when the ignition switch is turned to ON position.

Circuit Testing Description:

INSPECTION PROCEDURE
The inspection based on the monitor DTCs should be performed in the following steps.

ECM Connectors:

NOTE:
1. When a trouble is not found through checks in steps 1 and 2:
^ Clear the memory.
^ Reconnect the circuit properly.
^ Road test the vehicle.
^ Obtain DTC display to see if the trouble has been corrected.
^ If the trouble persists, repeat the OBD System Check.
2. When making a continuity test or short out test on the circuit, disconnect wiring at the ECM, sensor or the actuator.
3. When checking ECM harness connector terminals, make connection by inserting the pin at end of the lead. Avoid connecting tester probe directly to the ECM terminal.