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5 CHECK OUTPUT SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 120 and terminal 1.
SEF253V
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK 䊳 GO TO 7.
NG 䊳 GO TO 6.
6 DETECT MALFUNCTIONING PART
Check the following.
쐌 Harness connectors E43, M65
쐌 Harness connectors M67, B101
쐌 Harness connectors B113, C3
쐌 Harness for open or short between vacuum cut valve bypass valve and ECM
䊳 Repair open circuit or short to ground or short to power in harness or connectors.
DTC P1490 VACUUM CUT VALVE BYPASS VALVE (CIRCUIT)
KA24DE
Diagnostic Procedure (Cont’d)
EC-535
FE
CL
MT
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
GI
MA
EM
LC
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