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EC-206 < DTC/CIRCUIT DIAGNOSIS > [VQ35DE] P0130, P0150 A/F SENSOR 1 P0130, P0150 A/F SENSOR 1 DTC Logic INFOID:0000000009651066 DTC DETECTION LOGIC To judge malfunctions, the diagnosis checks that the A/F signal computed by ECM from the A/F sensor 1 sig- DTC CONFIRMATION PROCEDURE 1. PRECONDITIONING If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct- Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON. 3. Turn ignition switch OFF and wait at least 10 seconds. TESTING CONDITION: >> GO TO 2. 2. PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A 1. Start engine and warm it up to normal operating temperature. 2. Let engine idle for 2 minutes. 3. Check 1st trip DTC. Is 1st trip DTC detected? YES >> Proceed to . NO-1 >> With CONSULT: GO TO 3. NO-2 >> With GST: GO TO 7. 3. CHECK AIR FUEL RATIO (A/F) SENSOR 1 FUNCTION 1. Start engine and warm it up to normal operating temperature. 2. Select “A/F SEN1 (B1)” or “A/F SEN1 (B2)” in “DATA MONITOR” mode with CONSULT. 3. Check “A/F SEN1 (B1)” or “A/F SEN1 (B2)” indication. Does the indication fluctuate around 2.2 V? YES >> GO TO 4. NO >> Proceed to . 4. PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B-I 1. Select “A/F SEN1 (B1) P1276” (for DTC P0130) or “A/F SEN1 (B2) P1286” (for DTC P0150) of “A/F 2. Touch “START”. 3. When the following conditions are met, “TESTING” will be displayed on the CONSULT screen. DTC No. Trouble diagnosis name DTC detecting condition Possible cause P0130 Air fuel ratio (A/F) sensor 1 A) The A/F signal computed by ECM from the A/F • Harness or connectors (The A/F sensor 1 circuit is open • A/F sensor 1 B) The A/F signal computed by ECM from the A/F P0150 Air fuel ratio (A/F) sensor 1 A) The A/F signal computed by ECM from the A/F • Harness or connectors (The A/F sensor 1 circuit is open • A/F sensor 1 B) The A/F signal computed by ECM from the A/F |