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TCM Power and Ground Circuit Check: Troubleshooting

WARNING: This page is about a different car, the 2008 Suzuki Grand Vitara and 2007 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.
TROUBLESHOOTING TABLE

Step Action YES NO
1  Check TCM back-up power circuit 
  1. Disconnect TCM connector with ignition switch OFF.
  2. Check for proper connection to TCM at "E92-24" terminal.
  3. If OK, check voltage at terminal "E92-24" of disconnected TCM connector.

Is it 10 - 14 V? 		 Go to Step 2. "WHT" circuit open or shorted to ground.
2  Check TCM power circuit 
  1. Disconnect TCM connector with ignition switch OFF.
  2. Check for proper connection to TCM at "E92-6" terminal.
  3. If OK, turn ignition switch ON and check voltage at terminal "E92-6" of disconnected TCM connector.

Is it 10 - 14 V? 		 Go to Step 4. Go to Step 3.
3  Check A/T relay operation 
  1. Check A/T relay operation by referring to A/T RELAY INSPECTION .

Is check result satisfactory? 		 "BLK/WHT", "WHT/GRN", or "BLK" circuit for power supply open. Replace A/T relay included in power integration No.2 in main fuse box.
4  Replace A/T relay included in power integration No.2 in main fuse box  .
  1. Turn ignition switch OFF.
  2. With TCM connectors disconnected, check for proper connection to TCM at "E92-1"/"E92-23" terminal.
  3. If OK, check resistance between "E92-1"/"E92-23" terminal of disconnected TCM connector and body ground.

Is continuity indicated? 		 TCM power and ground circuits are in good condition. "BLK" circuit for TCM ground open.
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