Suzuki WagonR+ RB310 Service Manual page 708

Troubleshooting
Step
1 Was "Engine and Emission Control System
Check" performed?
2 Signal circuit check
1) Disconnect connectors from ECM with igni-
tion switch turned OFF.
2) Remove ECM from vehicle body and then
connect connectors to ECM.
3) Check for voltage at terminal "E22-35",
under the following condition.
While engine cranking: 6 – 14 V
After starting engine: 0 – 1 V
Is voltage as specified?
ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE) 6-2-137
Action Yes
Go to Step 2.
Poor "E22-35" connection
or intermittent trouble.
Check for intermittent
referring to "Intermittent
and Poor Connection
Inspection" in Section 0A.
If wire and connections
are OK, substitute a
known-good ECM and
recheck.
No
Go to "Engine and Emis-
sion Control System
Check".
"BLK/YEL" wire or "BLK/
RED" wire circuit open.