Suzuki SY413 Service Manual page 3091

6E1-58 ELECTRONIC FUEL INJECTION SYSTEM (G13/G16 ENGINE WITHOUT WU TWC)
B-11 ELECTRIC LOAD SIGNAL CIRCUITS CHECK
STEP
Check voltage at A16 terminal under each condition
given below.
Ignition switch ON and small light or
1 rear defogger all turned OFF
Ignition switch ON and small light or
rear defogger turned ON
Is check result satisfactory?
Check voltage at A17 terminal under each condition
given below.
Ignition switch ON and
2 heater blower fan turned OFF
Ignition switch ON and
heater blower fan turned ON
Is check result satisfactory?
Fig. for STEP 1 and 2
ACTION
: 0 V
: 10 – 14 V
: 10 – 14 V
: 0 V
1. ECM (PCM) coupler connected
2. Body ground
1. ECM (PCM)
2. ECM (PCM) coupler
3. Electric load signal diodes (in J/B)
4. From lighting switch (small)
5. From rear defogger switch
6. From heater blower switch
YES
D "P/Bl" wire open or
Go to Step 2.
D Electric load signal
D Electric load signal
D "P / B" wire open or
Electric load signal
circuit are in good
D Electric load signal
condition.
NO
short
diodes faulty
wire (electric load to
J/B) open or short
short
wire open or short