TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
p.101
ATTE/A340 Automatic Trans (GTE)102 / 118
p.103
INSPECTION PROCEDURE — MK4 Supra A340 Automatic Trans (GTE), page 102
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AT2–102 A340E (2JZ—GTE) AUTOMATIC TRANSMISSION – TROUBLESHOOTING INSPECTION PROCEDURE 1 Check voltage between terminals R, NSW, 2, L of ECM connector and body ground. ON Check Harness A ECM 2 R L A 10, 9, 7 BEB853 ATB780 B 76 NSW P 1. Connect the Check Harness A to the ECM (See page EG–510). 2. Turn ignition switch ON. C Measure voltage between terminals R, NSW, 2, L of the Check Harness A connector and body ground when the shift lever is positioned to the following ranges. OK Position | R-body ground | NSW-body ground | 2-body ground | L-body ground P, N | Below 0.5 V | Below 0.5 V | Below 0.5 V | Below 0.5 V R | 10 – 14 V* | 10 – 14 V* | Below 0.5 V | Below 0.5 V D | Below 0.5 V | 10 – 14 V | Below 0.5 V | Below 0.5 V 2 | Below 0.5 V | 10 – 14 V | 10 – 14 V | Below 0.5 V L | Below 0.5 V | 10 – 14 V | Below 0.5 V | 10 – 14 V *: The voltage will drop slightly due to lighting up of the back up light. NG OK Proceed to next circuit inspection shown on matrix chart (See page AT2–64). 2 Check park/neutral position switch. 4 3 2 10 9 8 6 5 x 7 Q04369 P 1. Jack up the vehicle. 2. Remove the park/neutral position switch (See page AT2–17). C Check continuity between each terminal shown below when the shift lever is positioned to each position. O——O Continuity Terminal Position | 6 | 5 | 4 | 7 | 8 | 10 | 9 | 2 | 3 P | O—O | | O—O | | | | | | R | | O | | | O | | | | N | O—O | | O | | | O | | | D | | | | | | | O | | 2 | | | O | | | | | O | L | | | O | | | | | | O OK NG Replace the park/neutral position switch. 3 Check harness and connector between battery and park/neutral position switch, park/neutral position switch and ECM (See page IN–30). OK NG Repair or replace harness and connector. Check and replace ECM.