Nissan Truck D21. The following is the information specified in Mode 6 of SAE J1979. The test value is a parameter used to determine whether a system/circuit diagnostic test is “OK” or “NG” while being monitored by the ECM during self-diagnosis. The test limit is a reference value which is specified as the maximum or minimum value and is compared with the test value being monitored. Items for which these data (test value and test limit) are displayed are the same as SRT code items. These data (test value and test limit) are specified by Test ID (TID) and Component ID (CID) and can be displayed on the GST screen.
Nissan Truck D21 service Manual. This manual should be considered a permanent part of the vehicle and must be kept with the vehicle at all times. This Owner’s Manual should accompany the vehicle when sold to provide future owners and operators with important operation, safety and maintenance information.