Suzuki RA410, Manual

Page: 408 / 761

ENGINE AND EMISSION CONTROL SYSTEM 6E1-43
TABLE B-8 ELECTRIC LOAD SIGNALS CIRCUIT
1. Battery
2. Fuse/relay box
3. Ignition switch
4. Circuit fuse (REAR DEFOGGER)
5. Blower fan motor
6. Clearance light switch
7. Clearance light
8. Blower fan switch
9. A/C switch (if equipped)
10. Dual pressure switch (if equipped)
11. Rear defogger switch
12. Rear defogger
13. ECM/PCM
TERMINAL ARRANGEMENT OF ECM/PCM CONNECTOR (VIEWED FROM HARNESS SIDE)
C1
A13
C11
C21 C20 C19 C18
STEP ACTION YES NO
1 1) Check voltage at “C20” terminal under each condition
given in table below.
2) Is check result satisfactory?
Ignition switch ON
Heated blower fan OFF
Ignition switch ON
Heater blower fan ON
10 – 14 V
0 – 5 V
Go to step 2. “P/Bl” wire open or
short
Poor “C20” terminal
connection
After repair, go to step
2.
2 1) Check voltage at “C19” terminal under each condition
given in table below.
2) Is check result satisfactory?
Ignition switch ON
Clearance light OFF
Ignition switch ON
Clearance light ON
0 – 1 V
10 – 14 V
Go to step 3. “R/Y” wire open or
short
Poor “C19” terminal
connection
After repair, go to step
3.
3 1) Check voltage at “C18” terminal under each condition
given in table below.
2) Is check result satisfactory?
Ignition switch ON
Rear defogger OFF
Ignition switch ON
Rear defogger ON
0 – 1 V
10 – 14 V
Electric load signal
circuit is in good
condition.
“R/W” wire open or
short
Poor “C18” terminal
connection