Suzuki Wagon R Manual page 373

6-34 ENGINE DIAGNOSIS
INSPECTION OF ECM AND ITS CIRCUITS
ECM and its circuits can be checked at ECM wiring couplers by
measuring voltage and resistance.
CAUTION:
ECM cannot be checked by itself. It is strictly prohibited to
connect voltmeter or ohmmeter to ECM with coupler dis-
connected from it.
Voltage Check
1) Remove ECM (1) from body referring to Section 6E.
2) Check voltage at each terminal of couplers (2) connected.
NOTE:
As each terminal voltage is affected by the battery voltage,
confirm that it is 11 V or more when ignition switch is ON.
1. ECM
2. ECM couplers
(Viewed from
harness side)