Suzuki Wagon R RB310 - Transmission Control Module (TCM)

AUTOMATIC TRANSMISSION (4 A/T) 7B-7
Transmission control module (TCM)
TCM is an electronic circuit component that controls gear shift, idle-up according to the signal from each sensor.
Also it has learning control function for performing optimum control. It is a microcomputer consisting of an IC,
transistor, diode, etc. It is installed behind glove box.
1. “O/D OFF” lamp 9. Backup lamp 17. TCC (lock-up) solenoid valve
2. O/D off switch 10. A/T 18. Dropping resister
3. Brake light 11. Transmission fluid temperature sensor 19. Output shaft speed sensor
4. Brake light switch 12. Shift solenoid valve-A (No.1) 20. Input shaft speed sensor
5. ECM 13. Shift solenoid valve-B (No.2) 21. A/T relay
6. Barometric pressure sensor 14. Shift solenoid valve-C (No.3) 22. Ignition switch
7. To A/C compressor 15. Shift solenoid valve-D (No.4) 23. Data link connector (DLC)
8. Transmission range sensor 16. Shift solenoid valve-E (No.5) 24. Terminal arrangement of TCM connector
(viewed from harness side)
E22-14
E22-21
E21-5
E22-23
E23-16
Bl/B
Bl/Y
3
4
+BB
G/W
W
Y/B
Gr
Bl/W
Br/Y
B/Y
5
7
8
E13-8
E12-8
E13-18
E13-20
E12-5
E13-5
O
R
Bl/Y
Y
G/R
E12-1
E12-2
E12-3
E12-9
E12-10
E12-11
G
G/B
P
R
N
D
2
L
9
E13-21
E13-17
E13-4
12V
12V
12V
12V
12V
IG1
IG11
5V
5V
E13-3
E13-16
E13-10
E13-23
E13-24
E13-25
E13-26
E13-22
E13-11
E13-12
E13-13
E12-6
E12-14
E12-13
E12-7
E12-15
E13-2
E13-15
E12-12
W/R
W/R
B
B
B
Lg
P/Bl
Lg/B
W
W
Y
R
Y/Bl
B/O
W/Bl
W/Bl
R/W
B/R
Y/Bl
Br
Bl
G
10
11
12
13
14
16
17
R/W
18
19
20
+BB
21
22
23
12V
12V
12V
15
12V
IG1
IG11
5V
1
2
28
6
24
E13
E12