Output Codes - CIS-E III (Engine Code MC With 2 Knock Sensors)

Control unit circuitry allows checking of certain components by generating specific output signals. During output diagnosis, components can be checked by listening for their operation. Diagnostic output code will flash during testing, indicating which step the control unit is in.
Turn ignition switch off to erase fault memory. Turn ignition on. DO NOT crank or start engine. If engine is started, system will automatically switch to input testing when diagnostic procedure are activated.
To activate diagnostic procedure, locate 2 diagnostic connectors in drivers footwell area. Connect a test light between connectors A and B. See Figure .
Connect a jumper wire to other terminal in connector A. Touch other end of jumper wire to remaining terminal in connector B for at least 4 seconds.
This will activate the first of 5 output steps. To go to the next output step, touch end of jumper wire to remaining terminal in connector B again for at least 4 seconds. See Figure .
First step (Code 4433) will activate fuel pump. Pump will continue to activate through all 5 steps until diagnostic procedure is ended by turning off ignition.
Second step (Code 4441) will operate OXS frequency valve at 50 percent duty cycle until next step is activated.
Third step (Code 4442) will cause wastegate frequency valve to switch on-and-off until next step is activated.
Fourth step (Code 4443) will cause cold start valve to switch on-and-off for about 10 seconds.
Fifth step (Code 4343) causes carbon canister shutoff valve to switch on-and-off until step is terminated by turning ignition switch off. If necessary, output tests may be continued by repeating steps 3) through 10).
If any device does not operate as indicated during output tests, see appropriate test in SYSTEMS & COMPONENT TESTING article.

CIS-E III DOUBLE KNOCK SENSOR ENGINE CODE MC CONTROL INPUT FAULT CODES

Code	System Affected	Probable Cause
1111	ICU or FICU	Defective Memory Circuits
2111	Engine Speed Sensor	Physical Sensor Or Flwheel Damage, Debris, Incorrect Gap, Defective Control Unit
2112	Ignition Timing Point Sender	Physical Sensor Or Flwheel Damage, Debris, Incorrect Gap, Defective ICU
2113	Hall Sender	Sensor, Sensor Adjustment, Defective ICU Or Wiring
2121	Idle Switch	Switch Stuck Closed or Wiring Problem
2123	WOT Switch	Switch Stuck Closed or Wiring Problem
2141	First Knock Regulator	Engine or Ignition Knock Or Knock Control Module In ICU
2142	Knock Sensor I	Defective Sensor, Wiring Or ICU
2143	Second Knock Regulator	Engine or Ignition Knock Or Knock Control Module In ICU
2144	Knock Sensor II	Defective Sensor, Wiring Or ICU
2214	Upper RPM Limit Exceeded	Engine Speed Too High
2221	Intake Manifold	Broken Or Missing Vacuum Between Manifold Andd ICU
2222	Intake Manifold Pressure Sender	Defective Sender In ICU
2224	Engine Manifold Pressure	Dump Valve Or Vacuum Lines
2312	Coolant Temp. Sensor	No Signal From Sensor
2342	O2 Sensor	No Signal From Sensor
4444	No Faults Stored	N/A
0000	End of Diagnosis	N/A