Troubleshooting - Self-diagnostic Procedure
6-18spec tableTrouble-code table references both With CATA (oxygen content, code 1) and Without CATA (IMA, code 11) variants, and market exception 'Ex. KQ' for atmospheric pressure (code 13).
Self-diagnostic Procedure
When the Check Engine warning light has been reported on, turn the ignition on, pull down the passenger's side carpet from under the dashboard and observe the LED on the top of the ECU. The LED indicates a system failure code by blinking frequency. The ECU LED can indicate any number of simultaneous component problems by blinking separate codes, one after another.
0
System IndicatedECU
Page6-21
1
System IndicatedOXYGEN CONTENT (With CATA)
Page6-24
3
System IndicatedMANIFOLD ABSOLUTE PRESSURE
Page6-26
5
System IndicatedMANIFOLD ABSOLUTE PRESSURE
Page6-30
4
System IndicatedCRANK ANGLE
Page6-32, 36
6
System IndicatedCOOLANT TEMPERATURE
Page6-42
7
System IndicatedTHROTTLE ANGLE
Page6-44
8
System IndicatedTDC POSITION
Page6-34, 38
9
System IndicatedNo.1 CYLINDER POSITION
Page6-40, 46
10
System IndicatedINTAKE AIR TEMPERATURE
Page6-48
11
System IndicatedIMA (Without CATA)
Page6-50
13
System IndicatedATMOSPHERIC PRESSURE (Ex. KQ)
Page6-52
14
System IndicatedELECTRONIC AIR CONTROL
Page6-61
15
System IndicatedIGNITION OUTPUT SIGNAL
Page6-54
16
System IndicatedFUEL INJECTOR
Page6-72
17
System IndicatedVEHICLE SPEED SENSOR
Page6-56
NOTE
If codes other than those listed above are indicated, count the number of blinks again. If the indicator is in fact blinking these codes, substitute a known-good ECU and recheck. If the indication goes away, replace the original ECU.
The Check Engine warning light and ECU LED may come on, indicating a system problem, when, in fact, there is a poor or intermittent electrical connection. First, check the electrical connections, clean or repair connections if necessary.
If the Check Engine warning light is on and LED stays on, replace the ECU.