Engine Control Module (Ecm) I/O Signal - Subaru FORESTER 2004 Service Manual

CRUISE CONTROL SYSTEM (DIAGNOSTIC)

4. Engine Control Module (ECM) I/O Signal

A: ELECTRICAL SPECIFICATION
To A: B134
7 6 5 4 3
15 14 13
17 16 12 11 10
25 23
27 26 24 22 21 20 19 18
34 33 32 31 30 29 28
Content
Clutch switch
Cruise indicator light
Main power VB (CONTROL 1)
supply VB (CONTROL 2)
Vehicle speed signal
SET/COAST switch
RESUME/ACCEL switch
Brake switch 1
(Brake switch)
Brake switch 2
(Stop light switch)
Main switch
GND (CONTROL 1)
Ground
GND (CONTROL 2)
Ignition switch
Neutral switch (MT model)
Inhibitor switch (AT model)
Engine Control Module (ECM) I/O Signal
To B: B135
2 1 7 6 5 4 3
15 14 13
9 8 19 18 17 16 12 11
25 23
27 26 24
35 34 33 32 31
Terminal
Measuring conditions and I/O signals (ignition switch ON and engine idling)
No.
• Battery voltage is present when the clutch pedal is released.
A1
• "0 V" volt is present when the clutch pedal is depressed.
• Battery voltage is present when the main switch is turned to OFF.
A15
• "0 V" volt is present when the main switch is turned to ON.
B6 • Battery voltage is present when the main power supply is turned to ON.
B5 • "0 V" volt is present when the main power supply is turned to OFF.
Lift-up the vehicle until all four wheels are raised off the ground, and then rotate
B26 any wheel manually. Approx. "5 V" and "0 V" pulse signals are alternately input to
ECM.
• Battery voltage is present when the command switch is turned to SET/COAST
C11 position.
• "0 V" volt is present when the command switch is released.
• Battery voltage is present when the command switch is turned to RESUME/
C10 ACCEL position.
• "0 V" volt is present when the command switch is released.
• Battery voltage is present when the brake pedal is released.
C9
• "0 V" volt is present when the brake pedal is depressed.
• Battery voltage is present when the brake pedal is depressed.
C8
• "0 V" volt is present when the brake pedal is released.
• Battery voltage is present while the main switch is depressed or is turned to
C7 ON.
• "0 V" volt is present when the main switch is turned to OFF.
D2
D1
• Battery voltage is present with the ignition switch is turned to ON.
D15
• "0 V" volt is present when the ignition switch is turned to OFF.
• Battery voltage is present when the shift lever is in anywhere except neutral
D9 position.
• "0 V" volt is present when the shift lever is in neutral position.
• "0 V" volt is present when the select lever is in anywhere except N or P posi-
D9 tion.
• "5 V" volt is present when the select lever is in N or P position.
CC(H4DOTC 2.5)-6
To C: B136
2 1 6 5 4 3 2
15 14 13
10 9 8 16 12 11 10 9
25 23
22 21 20 27 26 24 22 21 20 19 18
30 29 28 35 34 33 32 31
To D: B137
1 7 6 5 4 3
15 14 13
8 7 17 16 12 11 10
25 23
17 24 22 21 20 19 18
30 29 28 31 30 29 28
—
2 1
9 8
27 26
CC-00197