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Diagnostic Procedure INSPECTION START Check fuel level, fuel supply system, OK E NG Correct. Check that all glow plug connecting plate OK E NG Install correctly. CHECK OVERALL FUNCTION. NG E OK CHECK COMPONENT CHECK VOLTAGE BETWEEN GLOW nector terminal q 5 and engine ground with tester. Voltage: Battery voltage OK E NG Check the following: I 80A fusible link in fusible I Harness continuity If NG, replace fuse or fus- CHECK VOLTAGE BETWEEN GLOW nector terminals q 2 and engine ground with tester. Voltage: Battery voltage OK E NG Check the following: I 20A fusible link in fusible I ECM relay I Harness continuity If NG, replace fuse or fus- CHECK OUTPUT SIGNAL CIRCUIT. ECM connector terminal 214 and glow relay connector terminal q 1 . Refer to wiring diagram. Continuity should exist. OK E NG Check the following. I Harness connectors M787 , F66 (LHD mod- els) I Harness continuity If NG, repair harness or CHECK HARNESS CONTINUITY relay connector terminal q 3 and glow plug connector terminal q 1 . Refer to wiring diagram. Continuity should exist. OK E NG Check the following. I Harness connectors M740 , E142 I Harness continuity If NG, repair harness or q A NEF504 MEC950D MEC951D H H H H H H H H DTC P0380 GLOW RELAY, DTC P0381 GLOW LAMP TD27Ti EC-393 |