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Inspection of Cruise Control System Circuit
Cruise control system is controlled by ECM. Each switch and circuit can be checked by taking measurement of
terminal voltage and terminal to terminal resistance of ECM. When measuring these values, be sure to read
precautions for measurement described under "Inspection of ECM and Its Circuits in Section 1A".
Voltage Check
Check voltage between the following terminals with ECM connector connected.
Terminal arrangement of ECM connector viewed from harness side
15
14
13
12
11
30
29
28
27
26
44
45
43
42
41
60
59
58
57
56
Terminals
Cruise control main switch
E01-6 – ground
circuit
E01-7 – ground
CPP switch circuit
Brake pedal position switch
E01-8 – ground
circuit
E01-20 – ground Brake light switch circuit
Ground circuit for cruise
E01-21 – ground
control command switch
Cruise control command
switch (SET/COAST, ACC/
E01-22 – ground
RES and CANCEL switch)
circuit
E01
10
9
8
7
6
5
4
3
25
24
23
22
21
20
19
18
40
39 38
37
36
35
34
33
55
54 53
52
51
50
49
48
Circuit
2
1
15
14
13
12
11
17
16
30
29
28
27
26
44
32 31
45
43
42
41
47 46
60
59
58
57
56
Normal Voltage
Ignition switch is at ON position and cruise
0 V
control MAIN (ON/OFF) switch is not pushed.
Ignition switch is at ON position and cruise
10 – 14 V
control MAIN (ON/OFF) switch is kept in push.
Ignition switch is at ON position and clutch
10 – 14 V
pedal is not depressed.
Ignition switch is at ON position and clutch
0 V
pedal is depressed.
Ignition switch is at ON position and brake
10 – 14 V
pedal is not depressed.
Ignition switch is at ON position and brake
0 V
pedal is depressed.
Ignition switch is at ON position and brake
0 V
pedal is not depressed.
Ignition switch is at ON position and brake
10 – 14 V
pedal is depressed.
Below 1.3 V
Ignition switch is at ON position.
Ignition switch is at ON position and cruise
0 – 1.2 V
control CANCEL switch is kept in push.
Ignition switch is at ON position and SET/
1.2 – 2.6 V
COAST switch of cruise control is kept in push.
Ignition switch is at ON position and ACC/RES
2.6 – 4.4 V
switch of cruise control is kept in push.
Ignition switch is at ON position and cruise
4.4 – 5.5 V
control command switches are not pushed.
Cruise Control System:
C01
10
9
8
7
6
5
4
3
25
24
23
22
21
20
19
18
40
39 38
37
36
35
34
33
55
54 53
52
51
50
49
48
Condition
10A-6
S6RW0CA104002
2
1
17
16
32 31
47 46
I7RW01A10004-01
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