Pinout Values and Diagnostic Parameters

1. Turn ignition switch to Lock position, then remove large harness connector and small harness connector ``B'' from ECU.
2. Set check switch on ECI checker to Off, then the select switch to ``A.''
3. Set check switch on ECI checker to Off, then the select switch to ``A.''

Fig. 3 ECI checker:

4. Connect white color connectors labeled ``Checker,'' of harness connector to connectors of ECI checker. Connect harness connector to ECU and harness connector, See Connector ID

MPI Diagnostic Chart Test 1, Part 1 *** UPDATED BY TSB #14-03-88:

MPI Diagnostic Chart Test 1, Part 2 *** UPDATED BY TSB #14-03-88:

5. Perform checks as shown in diagnostic charts.
6. Turn ignition switch to Lock, then set check switch of ECI checker to Off.
7. Disconnect white color connectors labeled ``Checker,'' of harness connector from ECI checker. Connect green color harness connectors with harness connector labeled ``Checker'' of ECI checker.

MPI System Chart Test 2:

8. Perform checks as shown in diagnostic charts.
9. If checker shows any deviation from specifications, check corresponding sensor and related wiring for defects and repair as necessary.
10. Set check switch of ECI checker to off, then disconnect harness and checker connectors.
11. Connect body harness to ECU, then after testing, road test vehicle to ensure repairs are satisfactory.