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DIESEL CONTROL SYSTEM FLA -527 2) Measure the resistance between diagnostic connector 3 and 11. 3) Disconnect ECM and TCM connector. 4) Measure the resistance between diagnostic connector 3 and 11. Specification : Both ECM and TCM connected : 60 ± 3Ω (Test 1) 5) Is CAN BUS resistance within the specification? YES ▶ Go to "2.Check short to ground in CAN BUS" as follows. NO ▶ Below 10Ω for both conditions(disconnected, connected) : Repair short between CAN BUS and go to "Veri- 2. Check short to ground in CAN BUS 1) IG KEY "OFF", ENGINE "OFF". 2) Disconnect ECM and TCM connectors. 3) Check continuity between DLC terminal 3 and chassis ground. (CAN HIGH) 4) Check continuity between DLC terminal 11 and chassis ground. (CAN LOW) Specification : Discontinuity ( Infinite Ω ) 5) Is measured resistance within the specification? YES ▶ Go to "3. Check short to battery in CAN BUS". NO ▶ Repair short to ground in circuit and go to "Verification of Vehicle Repair". 3. Check short to battery in CAN BUS 1) IG KEY "OFF", ENGINE "OFF". 2) Disconnect ECM and TCM connectors. 3) IG KEY "ON". 4) Measure the voltage of DLC terminal 3. (CAN HIGH) 5) Measure the voltage of DLC terminal 11. (CAN LOW) Specification : 0.0V~0.1V |