Index Isuzu Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross - service repair manual 1999-2002 year
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6E–420 TROOPER 6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS DTC P1271 – APS 1– 2 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 1. Warming up the engine until the ECT rise at 80 ° C 2. Ignition “OFF”. alowly opening the throttle. Does the AP angle increase steadily and evenly from Closed throttle APS1 = 11 ∼ 15% APS2 = 85 ∼ 89% Wide open throttle APS1 = 85 ∼ 89% APS2 = 11 ∼ 15% Go to Step 4 Go to Step 5 4 Was the DTC P1271 stored? — Go to Step 9 Check the procedure. Refer to Diagnositec Aids 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 6 Go to Step 7 6 Check the following items; 1. AP1and AP2 signal circuit for a short to voltage. resistance between the PCM and the AP sensor. 3. AP1and AP2 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 7 7 Check the following items; 1. AP1and AP2 signal circuit or 5 volge supply circuit for a poor connection. 2. AP1and AP2 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 8 |