6-1-4
ENGINE DIAGNOSIS (RHZ ENGINE WITH TRIPLE-CONNECTOR ECM)
INSPECTION OF PCM (ECM) AND ITS CIRCUITS
PCM (ECM) and its circuits can be checked at PCM (ECM) wiring
couplers by measuring voltage and resistance.
CAUTION:
PCM / ECM cannot be checked by itself. It is strictly prohib-
ited to connect voltmeter or ohmmeter to PCM (ECM) with
couplers disconnected from it.
Voltage Check
1) Remove ECM form ECM bracket referring to “ENGINE CON-
TROL MODULE (ECM)” in Section 6E3.
2) Remove harness clamps (1) from ECM harness connector as-
semblies (2).
3) Remove connector covers (3) from ECM harness connector as-
semblies loosing connector cover locks (4).
4) Connect ECM harness connectors to ECM using connector lock
lever (1).
5) Measure voltage at each terminal with ignition switch turned ON
according to Diag. Flow Table.
NOTE:
As each terminal voltage is affected by the battery voltage,
confirm that it is 11 V or more when ignition switch is ON.
6) After measuring, disconnect ECM harness connectors (1) from
ECM loosing connector lock lever.
Содержание GRAND VITARA XL-7
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