Suzuki GRAND VITARA JB416, Service Manual

Page: 348 / 474

5A-29 Automatic Transmission/Transaxle:
Inspection of TCM and Its Circuits
S5JB0E5104049
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: in
related manual”.
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)
3. Body ground
3
4
1
2
I4RS0A510021-02
6 5
16 15 14 13 12 11
4 3
24 23 21 22
10 9 8 7
2 1
19 20 18 17
E92
17 16
26 25
15 14
6 5 3 4 2
13 12
23 22 24
11 10 9
21 20 19
8 7
18
1
E93
I5JB0A510151-01