A vacuum gauge should have found that if it's a leak or a can of choke cleaner sprayed onintake and around tb.
10) DTC P0118 Or P0113: Induce Opposite DTC (117 Or 112)
DTC P0118 (ECT) or P0113 (IAT) indicate corresponding sensor signal is more than self test maximum. Maximum signal voltage for ECT and IAT sensor is 4.6 volts. Possible causes for excess voltage signals
? Open circuit in wiring harness (IAT or ECT).
? Faulty connection.
? Faulty sensor.
? Faulty PCM.
Turn ignition off. Disconnect suspect temperature sensor. Connect a jumper wire between signal circuit (ECT or IAT) terminal and SIG RTN terminal at sensor wiring harness connector. With scan tester installed,
turn ignition on.
NOTE: If communication link error is displayed, remove jumper wire and go to step 12).
Access ECT or IAT PID. If the PID is less than 0.2 volt, replace sensor and repeat QUICK TEST. If PID is 0.2 volt or more, remove jumper wire and go to next step.
11) Check Continuity Of Sensor Signal & SIG RTN Circuits
Turn ignition off. Ensure suspect temperature sensor is disconnected. Disconnect PCM 104 pin connector. Check for damaged wiring, and repair as necessary. Install Breakout Box (014 00950), leaving PCM
disconnected. Measure resistance between test pin No. 38 (ECT sensor) or test pin No. 39 (IAT sensor) at breakout box and SIG RTN terminal at sensor wiring harness connector. Also, measure resistance
between test pin No. 91 (SIG RTN) and SIG RTN circuit at sensor wiring harness connector. If both readings are less than 5 ohms, replace PCM, and repeat QUICK TEST. If either reading is 5 ohms or more,
repair open circuit and repeat QUICK TEST.
Friday, March 9th, 2012 AT 10:33 PM