Suzuki SY413 Service Manual page 2632

ENGINE GENERAL INFORMATION AND DIAGNOSIS (G13/G16 ENGINE WITH WU TWC) 6-1-33
INSPECTION OF ECM (PCM) AND ITS
CIRCUITS
ECM (PCM) and its circuits can be checked at ECM (PCM) wiring
couplers by measuring voltage and resistance.
CAUTION:
ECM (PCM) cannot be checked by itself. It is strictly pro-
hibited to connect voltmeter or ohmmeter to ECM (PCM)
with coupler disconnected from it.
VOLTAGE CHECK
1) Remove ECM (PCM) (1) from body referring to Section 6E2.
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.
3. Body ground
1. ECM (PCM)
2. ECM (PCM) couplers (Viewed from harness side)