ECU Pin-Out Tests

The fuel injection circuit can be checked by measuring the resistance and voltage at the wiring connectors of the ECU.
1. Remove glove box, then the instrument panel under cover and lower left pad.
2. Tester probes should be inserted into wiring connector from wiring side.
3. Inspect voltage of ECU, noting the following:
a. Perform all voltage measurements with connectors connected.
b. Verify battery voltage is 11 volts or more with ignition switch On.
c. Refer to Fig. 49, for terminals to be tested and specifications.

Fig. 49 ECU Voltage Specifications (Part 1 Of 2):

Fig. 49 ECU Voltage Specifications (Part 2 Of 2):

4. Inspect resistance of ECU, noting the following:
a. Disconnect connectors from ECU.
b. Measure resistance at connector terminals. Do not touch ECU terminals.
c. Refer to Fig. 51, for terminals to be tested and specifications.

Fig. 51 ECU Resistance Specifications: