ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE) 6-2-85
DTC P0122 Throttle Position Sensor 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. TP sensor 2. To MAP sensor 3. To other sensors 4. ECM
E23 E22 E21
12345671234561234567
7
891011121314151617 8910111213141516 891011121314151617
1819
1819
1718192021222324252627 20212223 202122232425 24252627 2627
2829303132 32 282930 28293031 3133 33 323334 3435 3435
WHT/GRN WHT/GRN
GRY
E22-28
E22-34
E22-8
4
2
1
3
BRN/WHT BRN/WHT
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 TP sensor output is less than the specified value
• TP sensor circuit
• TP 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.
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