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TEST ACTION APPLICABILITY 2 With the DRBIII t, check for other transmission DTC’s. Are any Transmission Control Relay related DTC’s, P1765, P1767, or P1768 present? 45RFE AUTO TRANS Yes → Refer to symptom list and perform test for Transmission Relay No → 3 With the DRBIII t, Check the STARTS SINCE SET counter. NOTE: This counter only applies to the last DTC set. 45RFE AUTO TRANS Yes → No → 4 Turn the ignition off to the lock position. t while pressing pressure switch test button. 45RFE AUTO TRANS Yes → No → 5 If there are no possible causes remaining, view repair. 45RFE AUTO TRANS Repair Replace the Solenoid/TRS assembly in per the Service Informa- 6 Turn the ignition switch to the lock position. 45RFE AUTO TRANS Yes → Repair the open OD Pressure Switch Sense circuit. No → 179 TRANSMISSION P1781-OD PRESSURE SWITCH SENSE CIRCUIT — Continued |