Maxima SE V6-3.0L (VQ30DE) (1998)
ECM TERMINALS AND REFERENCE VALUE
Specification data are reference values, and are measured between each terminal and (25) (ECCS ground).
ON BOARD DIAGNOSIS LOGIC
To judge the malfunction, the output from the front heated oxygen sensor is monitored to determine whether the "rich" output is sufficiently high and
whether the "lean" output is sufficiently low. When both the outputs are shifting to the lean side, the malfunction will be detected.
DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE
CAUTION: Always drive vehicle at a safe speed.
NOTE: If "DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE" has just been completed, always turn ignition switch "OFF" and wait
at least 5 seconds before conducting the next test.
TESTING CONDITION:
Always perform at a temperature of more than -10°C (14°F).
Before performing following procedure, confirm that battery voltage is more than 11 V at idle.
Never raise engine speed above 3,600 rpm (A/T), 4,000 rpm (M/T) during the "DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE".
If the engine speed limit is exceeded, retry the procedure from step 2).
OVERALL FUNCTION CHECK
Use this procedure to check the overall function of the front heated oxygen sensor circuit. During this check, a 1st trip DTC might not be confirmed.