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6E–429 TROOPER 6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS DTC P1273 – APS 1 – 3 Correlation Error
Step Action Value(s) Yes No 1 Was the “On-Board (OBD) System Check” performed? — Go to Step 2 Go to OBD System Check 2 Was the “Electric Throttle Control (ETC) System — Go to Step 3 Go to ETC System Check 3 Observe the AP angle reading on the Tech2 while Does the AP angle increase steadily and evenly from Idleposition APP sensor 1 =13 % APP sensor 3 =85 ∼ 89 % Wide open throttle 1 =85 ∼ 89 % APP sensor 3 =32 ∼ 36 % Refer to Diagnostic Aids Go to Step 4 4 1. Disconnect the AP sensor. Is the AP sensor reading near the specified value? 0V Go to Step 5 Go to Step 6 5 1. Connect a test light between the 5 Voltge supply circuit and the AP sensor signal circuit at the AP1 2. Observe the AP sensor reading on the Tech 2. Is the AP sensor reading near the specified value? 5V Go to Step 7 Go to Step 8 6 Check the following items; 1. AP1 and AP3 signal circuit for a short to voltage. resistance between the PCM and the AP sensor. 3. AP1 and AP3 sensor ground circuit for a poor connection. 4. If a problem is found, repair wiring harness as necessary. Was a problem found? — Verify repair Go to Step 9 7 Check the following items; 1. AP1 and AP3 signal circuit or 5 volge supply circuit for a poor connection. 2. AP1 and AP3 signal circuit or 5 volge supply circuit for high resistance between the PCM and the AP1 3. If a problem is found, repair wiring harness as necessary. Was a problem found? — Verify repair Go to Step 9 8 Replace the AP sensor. Is the action complete? — Verify repair — |