Suzuki Wagon R Manual page 2164

Table B-6 Electric Load Signal Circuit Check
5
1
6
E23
7 6 5 4 3
17 16 15 14 13 12 11
27 26 25 24 23 22 21
34 33 32 31
1. Blower fan motor
2. Blower fan switch
Troubleshooting
Step
1 Do you have SUZUKI scan tool?
2 Check electric load signal circuit.
1) Connect SUZUKI scan tool to DLC with ignition
switch OFF.
2) Start engine and select "DATA LIST" mode on
scan tool.
3) Check electric load signal under following each
condition. See Table 1.
Is check result satisfactory?
3 Check electric load signal circuit.
1) Turn ignition switch ON.
2) Check voltage at each terminals "E21-13" and
"E21-33" of ECM connector connected, under
above each condition. See Table 1.
Is each voltage as specified?
Table 1 for Step 2 and 3
Ignition switch ON, Small
light and heater blower fan all
turned
2
3
E22
2 1 7 6 5 4 3
10 9 8 19 18 17 16 15 14 13 12 11
20 19 18 27 26 25 24 23
30 29 28 35 34 33 32 31
3. Position lamp 5. To "HEATER" fuse
4. ECM 6. To "TAIL" fuse
Action
SUZUKI
SCAN TOOL
OFF OFF
ON ON
ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE) 6-2-161
PNK/BLU
RED/YEL
E21
2 1 6 5 4 3 2
10 9 8 16 15 14 13 12 11 10 9 8
22 21 20 27 26 25 24 23 22 21 20 19
30 29 28 35 34 33 32 31 30
Go to Step 2.
Electric load signal circuit
is in good condition.
Electric load signal circuit
is in good condition.
Scan tool or voltmeter
VOLTAGE
AT E21-33
0 V
10 – 14 V
4
E21-13
E21-33
1
7
18 17
29 28
Yes
Go to Step 3.
"PNK/BLU" and/or
"RED/YEL" circuit open
or short, electric load
diodes malfunction or
each electric load cir-
cuit malfunction.
"PNK/BLU" and/or
"RED/YEL" circuit open
or short, electric load
diodes malfunction or
each electric load cir-
cuit malfunction.
VOLTAGE
AT E21-13
10 – 14 V
0 V
No