1A-142 Engine General Information and Diagnosis:
DTC Troubleshooting
NOTE
• 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”.
• Upon completion of inspection and repair work, perform “DTC Confirmation Procedure” and
confirm that the trouble has been corrected.
Step Action Yes No
1 Was “Engine and Emission Control System Check”
performed?
Go to Step 2. Go to “Engine and
Emission Control
System Check”.
2 Electric load current sensor power and ground circuit
check
1) Disconnect connector from electric load current sensor.
2) Check electric load current sensor circuit for the
following.
• Voltage between “BLK/WHT” wire terminal of electric
load current sensor connector and vehicle body
ground is 10 – 14 V with ignition switch turned ON
• Resistance between “BLK/ORN” wire terminal of
electric load current sensor connector and vehicle
body ground is less than 2 Ω
Are they in good condition?
Go to Step 3. Repair or replace
defective wire.
3 Electric load current sensor output circuit check
1) Disconnect connectors from ECM.
2) Check electric load current sensor circuit for the
following.
• Resistance between “PNK/BLU” wire terminal of
electric load current sensor connector and “C37-23”
terminal of ECM connector is less than 2 Ω
• Resistance between “PNK/BLU” wire terminal of
electric load current sensor connector and vehicle
body ground is infinity
• Voltage between “PNK/BLU” wire terminal of electric
load current sensor connector and vehicle body
ground is 0 V with ignition switch turned ON
Are they in good condition?
Go to Step 4. Repair or replace
defective wire.
4 Electric load current sensor check
1) Check for electric load current sensor output referring to
“Electric Load Current Sensor On-Vehicle Inspection in
Section 1C”.
Is check result satisfactory?
Substitute a known-
good ECM and recheck.
Faulty electric load
current sensor.
To Next Page
Loading...
Need help?
General
