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ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-175 10 1. Inspect for an intermittent and for poor 2. Repair the connection(s) as necessary. Did you find and correct the condition? — Go to Step 15 Go to Step 12 11 1. Turn OFF the ignition. 2. Disconnect the ECM harness connector. 3. Inspect for an intermittent and for a poor 4. Repair the connection(s) as necessary. Did you find and correct the condition? — Go to Step 15 Go to Step 14 12 1. Inspect the VSS, drive gear, driven gear or • Physical damage of sensor, drive gear or driven gear • Loose or improper installation of sensor, drive gear or driven gear • Transmission output shaft teeth damage • Excessive transmission output shaft play • Transfer output shaft teeth damage • Excessive transfer output shaft play 2. Repair or replace as necessary. Did you find and correct the condition? — Go to Step 15 Go to Step 13 13 Replace the VSS. Refer to VSS Replacement. Did you complete the replacement? — Go to Step 15 — 14 Important: Replacement ECM must be Did you complete the replacement? — Go to Step 15 — 15 1. Reconnect all previously disconnected fuse or 2. Clear the DTCs with a scan tool. 3. Turn OFF the ignition for 30 seconds. 4. Drive the vehicle while observing the Vehicle Does the scan tool indicate correct vehicle speed? — Go to Step 16 Go to Step 4 16 Observe the DTC Information with a scan tool. Are there any DTCs that you have not diagnosed? — Go to DTC List System OK Step Action Value(s) Yes No |