6-2-76 ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE)
DTC P0117 Engine Coolant Temperature Circuit Low
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Start engine and run it for 10 sec. or more.
4) Check DTC and pending DTC.
Troubleshooting
1. ECT sensor 2. ECM 3. To other sensors
E23 E22 E21
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7
891011121314151617 8910111213141516 891011121314151617
1819
1819
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2829303132 32 282930 28293031 3133 33 323334 3435 3435
E22-28
BRN/WHT BRN/WHT
3
1
2
E22-16
YEL/GRN
DTC Detecting Condition Trouble Area
DTC will be set when all of the following conditions are
detected for 0.5 seconds continuously.
• Engine is running
• Voltage of ECT sensor output is less than the specified
value
(High engine coolant temperature (low voltage/low resis-
tance))
• ECT sensor circuit
• ECT sensor
• ECM
Step Action Yes No
1Was “Engine and Emission Control System
Check” performed?
Go to Step 2. Go to “Engine and Emis-
sion Control System
Check” in this section.
2 ECT sensor and its circuit check.
1) Connect scan tool with ignition switch
turned OFF.
2) Turn ignition switch ON.
3) Check engine coolant temp. displayed on
scan tool.
Is 164°C (327°F) indicated?
Go to Step 3. Intermittent trouble check
for intermittent referring to
“Intermittent and Poor
Connection Inspection” in
section 0A.
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