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7. CHECK ECM POWER SUPPLY CIRCUIT - (2) • Check voltage between ECM terminals 44, 45, 63 and ground. • Voltage: Turn ignition switch on, battery voltage should exist and after turning ignition switch off, Is the check result normal? Yes >> Check the starting system. No >> Go to the next step. 8. CHECK STARTER RELAY (K4) SUPPLY VOLTAGE • Turn ignition switch off. Wait for at least 10 sec- onds. • Check voltage between the ECM terminal 14 and ground. • Battery voltage should exist. Is the check result normal? Yes >> Go to the next step. No >> Go to step 10. 9. CHECK ECM POWER SUPPLY CIRCUIT - (3) • Disconnect ECM harness connector. • Disconnect ECM power supply circuit connector F in front fuse and relay box harness connector. • Check harness continuity between ECM terminals 44, 45, 63 and front fuse and relay box terminal F3. • Continuity should exist. • Also check harness for a short to ground and short to power. Is the check result normal? Yes >> Go to step 11. No >> Repair circuit for an open or short to power in harness or connectors. DIAGNOSIS & TESTING LTSMD030062 LTSMD030063 03
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