On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO. DTC DEFINITION
DTC DETECTION
CONDITION
DTC SET
CONDITION
POSSIBLE CAUSES
P0904 Gear position sensor Engine is running
• The Automated
Manual Transaxle
(AMT) control
module detects that
the voltage is out of
the acceptable
range.
• If this DTC is set,
the AMT can only be
shifted up to 3rd
gear forcibly.
• Gear position
sensor
• Harness or
connectors (The
sensor circuit is open
or shorted)
• AMT control
module
• AMT electro-
mechanical control
unit
DTC Confirmation Procedure:
Before performing the following procedure, confirm that battery voltage is more than 12 V.
• Turn ignition switch off.
• Connect the X-431 scan tool to the Data Link Connector (DLC) - use the most current software available.
• Turn ignition switch on, with the scan tool, view and erase stored DTCs in the Automated Manual Transaxle
(AMT) control module.
• Start the engine and warm it to normal operating temperature.
• Drive the vehicle and attempt to operate the gear selection lever to every gear condition required for this test.
• With the scan tool, select view DTC and data stream.
• If the DTC is detected, the DTC condition is current. Go to Diagnostic Procedure - Step 1.
• If the DTC is not detected, the DTC condition is intermittent (See Diagnostic Help and Intermittent DTC Trou-
bleshooting in Section 08 Transaxle for more information).
NOTE :
• Using the appropriate diagnostic test tool, you can diagnose the AMT control module harness while the AMT con-
trol module is still connected. This will help prevent electrical connector terminal damage.
DIAGNOSIS & TESTING
08–80
Chery Automobile Co., Ltd.
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