Inspection Of Tcm And Its Circuits - Suzuki Grand Vitara Manual

5A-74 Automatic Transmission/Transaxle:

Inspection of TCM and Its Circuits

TCM and its circuits can be checked at TCM wiring connectors by measuring voltage, pulse signal and resistance.
CAUTION
!
TCM cannot be checked by itself, it is strictly prohibited to connect voltmeter or ohmmeter to TCM with
connector disconnected from it.
1) Remove TCM (1) from vehicle referring to "Transmission Control Module (TCM) Removal and Installation: ".
2) Connect TCM connectors (2) to TCM.
3) Check voltage and/or pulse signal at each terminal of connectors connected using voltmeter (3) and oscilloscope
(4).
NOTE
• As each terminal voltage is affected by battery voltage, confirm that it is 11 V or more when ignition
switch is ON.
• Voltage with asterisk (*) cannot be measured by voltmeter because it is pulse signal. Check it with
oscilloscope if necessary.
Terminal arrangement of TCM coupler (Viewed from harness side)
www.CarGarage.ir
1
3
3. Body ground
E92
6 5 2 1
4 3
16 15 14 13 12 11 10 9 8 7
20 19 18 17
24 23 22 21
www.CarGarage.ir
2
4
I4RS0A510021-02
E93
1
6 5 4 3 2
17 16 15 14 13 12 11 10 9 8 7
26 25 21 20 19 18
24 23 22
I5JB0A510151-01
S5JB0A5104061