Engine General Information and Diagnosis: 1A-39
Troubleshooting
NOTE:
• Before performed trouble shooting, be sure to read the “Precautions of ECM Circuit Inspection: ”.
• When measuring circuit voltage, resistance and/or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors referring to “Inspection of ECM and Its Circuits: ”.
Step
Action
Yes
No
1
MIL power supply check
1) Turn ignition switch to ON position.
Do other warning lights come ON?
Go to Step 2.
Go to Step 3.
2
DTC check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ON ignition switch and check DTC.
Is there DTC(s) P1674, P1675 and/or P1678?
Go to applicable DTC
diag. flow.
Substitute a known-
good combination meter
and recheck. If MIL still
remains OFF, substitute
a known-good ECM and
recheck.
3
CAN communication line circuit check
1) Check CAN communication circuit between combination
meter and ECM or TCM (equipped with A/T) referring to
Step 9 to 14 of “DTC P1674: CAN Communication (Bus
Off Error): ”
Is circuit in good condition?
Go to Step 4.
Repair or replace.
4
“METER” fuse check
1) Turn ignition switch to OFF position.
2) Check for fuse blown at “METER” fuse in junction block
assembly.
Is “METER” fuse in good condition?
Go to Step 5.
Replace “METER” fuse
and check for short.
5
Combination meter power supply check
1) Remove combination meter referring to “Combination
Meter Removal and Installation: in Section 9C”.
2) Check for proper connection to combination meter
connector at “G28-31” and “G28-16” terminals.
3) If OK, then turn ignition switch to ON position and
measure voltage between combination meter connector
at “G28-31” terminal and vehicle body ground.
Is it 10 – 14 V?
Go to Step 6.
“RED/BLK” wire is open
circuit.
6
Combination meter circuit check
1) Turn ignition switch to OFF position.
2) Measure resistance between “G28-16” terminal of
combination meter connector and vehicle body ground.
Is resistance 1
:
or less?
Substitute a known-
good combination meter
and recheck. If MIL still
remains OFF, substitute
a known-good ECM and
recheck.
“BLK/ORN” wire is open
or high resistance
circuit.
Содержание SWIFT RS415 2017
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