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P0132, P0152 A/F SENSOR 1 EC-1233 < COMPONENT DIAGNOSIS > [VQ35DE] C D E F G H I J K L M A EC N P O P0132, P0152 A/F SENSOR 1 Description INFOID:0000000004362088 The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sen- sor. The sensor element of the A/F sensor 1 is composed an elec- trode layer, which transports ions. It has a heater in the element. lean and rich range. Together with its control electronics, the sensor The exhaust gas components diffuse via the diffusion layer at the sensor cell. An electrode layer is applied voltage, and this current relative oxygen density in lean. Also this current relative hydrocar- bon density in rich. Therefore, the A/F sensor 1 is able to indicate air fuel ratio by this electrode layer of current. In addition, a heater is integrated in the sensor to ensure the required operating temperature of approxi- mately 800 °C (1,472°F). DTC Logic INFOID:0000000004362089 DTC DETECTION LOGIC To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the A/F sensor 1 signal is not inordinately high. DTC CONFIRMATION PROCEDURE 1. PRECONDITIONING If DTC Confirmation Procedure has been previously conducted, always preform the following before conduct- ing the next test. 1. 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: Before performing the following procedure, confirm that battery voltage is more than 10.5 V at idle. >> GO TO 2. 2. CHECK A/F SENSOR 1 FUNCTION With CONSULT-III 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-III. 3. Check “A/F SEN1 (B1)” or “A/F SEN1 (B2)” indication. JMBIA0112GB PBIB3354E DTC No. Trouble diagnosis name DTC detecting condition Possible cause P0132 Air fuel ratio (A/F) sensor 1 sensor 1 signal is constantly approx. 5 V. • Harness or connectors (The sensor circuit is open or shorted.) • A/F sensor 1 P0152 Air fuel ratio (A/F) sensor 1 |