diagnostyka daihatsu G100-102.doc

G100/G102 Fault Codes

An unauthorised scan from Gregory's Automotive Manual 254 (ISSN 0727-6117, ISBN 0 855 66685 4). We highly recommend you purchase a copy from your nearest stockist.

SELF DIAGNOSIS

This function is very useful in locating system faults, particularly intermittent problems. However, the self diagnosis mode does not provide comprehensive testing of the engine management system and therefore should always be used in conjunction with the other test procedures described later in order to accurately locate system faults.

To Interpret Self Diagnosis Fault Codes

When a fault is detected by the ECU it is not always displayed by the Check Engine warning lamp. These faults are memorized by the ECU and only displayed when the check terminal is shorted to ground.

To identify the code number, count the number of times the Check Engine warning lamp flashes. Each fault code consists of a group of flashes, with each flash separated by a 0.5 second pause. After a 4.5 second pause the group of flashes is repeated.
If more than one fault code is present, the self diagnosis system will start from the smallest number and will pause for 2.5 seconds before showing the next group of flashes. The codes will be repeated after a 4.5 second pause.

The fault codes can be identified as follows:

CODE NUMBER FAULT AREA

1. 1 Satisfactory operation
   2 MAP sensor
   3 Ignition signal
   4 Coolant temperature sensor
   5 Oxygen sensor
   7 Throttle position sensor
   8 Intake air temperature sensor
   9 Speed sensor
   10 Starter signal
   11 Switch signal

To Test for Fault Codes

(1) Ensure that the battery voltage is above 11 volts
(2) Ensure that the throttle valve is fully closed, place the transaxle in neutral and turn off all accessories.
(3) Remove the cap from the engine check connector and connect a jumper lead between the terminals D and E as shown in the illustration.
(4) Switch the ignition On but do not start the
engine.
(5) To identify the code number, count the number of times the Check Engine warning lamp flashes.

(a) If the Check Engine warning lamp fails to illuminate, proceed as follows:Connect a jumper lead between the terminals B and E at the engine check connector. If the Check Engine lamp fails to illuminate, check the fuses, the check lamp bulb and the wiring between the ECU and the ignition switch.
If the Check Engine lamp illuminates, proceed as follows:
(b) Remove the glove compartment retaining screws and remove the glove compartment from the vehicle.
(c) Remove the ECU retaining screws.

NOTE: Do not remove the screws retaining the brackets to the ECU as it may damage the ECU.

(d) Pull the passenger side face vent duct away from the vent.
(e) Disconnect the electrical connectors from the ECU. Do not pull on the wiring when disconnecting, pull only on the body of the connector itself. Manoeuvre the ECU from the vehicle.

NOTE: On some models it may be necessary to remove the dashboard retaining bolts and partially withdraw the dashboard to remove the ECU. Refer to the Body section if necessary.

(f) Connect the ECU electrical connectors.

(g) Check for continuity between ECU terminal 21 and body ground, terminal I and body ground, and terminal 19 and engine check connector terminal B. If continuity does not exist in any of the above checks, repair or renew the wiring harness.

(h) If continuity exists, renew the ECU as described in this section.

To Erase Fault Codes

(1) Switch the ignition Off.
(2) Disconnect the negative battery terminal or remove the backup fuse from the relay box for at least 10 seconds..
(3) Connect the battery terminal or instal the fuse.
(4) Road test the vehicle and recheck for fault