114 RENR5042-02 Troubleshooting Section Not OK The test lamp did not turn on for five seconds. There is a problem with the ECM. Repair: Temporarily connect a test ECM. Refer to Troubleshooting, “Replacing the ECM”. Check the operation of the diagnostic lamp when the test ECM is installed. If the problem is resolved with the test ECM, connect the suspect ECM. If the problem returns with the suspect ECM, replace the ECM. Verify that the problem is resolved. STOP. i02289838 Digital Sensor Supply Circuit - Test SMCS Code: 5574-038 System Operation Description: The Electronic Control Module (ECM) supplies a regulated voltage of 8.0 ± 0.4 VDC to terminal A of the engine coolant level sensor.
This sensor is optional equipment. This procedure covers the following diagnostic codes: 041-03 041-04 A +8 V diagnostic code is probably caused by a short circuit to ground or a short circuit to another voltage source in the harness. The next likely cause is a problem with a sensor. The least likely cause is a problem with the ECM. g01146754 Illustration 41 Schematic for the digital sensor supply