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EC-72 < FUNCTION DIAGNOSIS > [VK56DE] ON BOARD DIAGNOSTIC (OBD) SYSTEM *: DTC P1442 and P1456 does not apply to JA60 models but appears in DTC Work Support Mode screens. Generic Scan Tool (GST) Function INFOID:0000000005149080 DESCRIPTION Generic Scan Tool (OBDII scan tool) complying with SAE J1978 has 8 different functions explained below. ISO15765-4 is used as the protocol. The name GST or Generic Scan Tool is used in this service manual. FUNCTION Test mode Test item Corresponding DTC No. Reference page EVAPORATIVE PURG FLOW P0441 P0441 EVP SML LEAK P0442/P1442* P0442 P0455 EVP V/S LEAK P0456/P1456* P0456 PURG VOL CN/V P1444 P0443 A/F SEN1 A/F SEN1 (B1) P1276 P0130 A/F SEN1 (B1) P1278/P1279 P0133 A/F SEN1 (B2) P1286 P0150 A/F SEN1 (B2) P1288/P1289 P0153 HO2S2 HO2S2 (B1) P0139 P0139 HO2S2 (B1) P1146 P0138 HO2S2 (B1) P1147 P0137 HO2S2 (B2) P0159 P0159 HO2S2 (B2) P1166 P0158 HO2S2 (B2) P1167 P0157 SEF139P Diagnostic test mode Function Service $01 READINESS TESTS This diagnostic service gains access to current emission-related data values, including an- Service $02 (FREEZE DATA) This diagnostic service gains access to emission-related data value which were stored by Service $03 DTCs This diagnostic service gains access to emission-related power train trouble codes which Service $04 CLEAR DIAG INFO This diagnostic service can clear all emission-related diagnostic information. This in- Service $06 (ON BOARD TESTS) This diagnostic service accesses the results of on board diagnostic monitoring tests of |