Chery T21 2014 Service Manual page 320

06 - SQR484F ENGINE MANAGEMENT SYSTEM
DTC Code
EMC/PCM Power
P0688-00 Relay Sense Circuit
Open
DTC Confirmation Procedure
Confirm that battery voltage is over 12 V before performing the following procedures.
 Turn ignition switch to LOCK.
 Connect X-431 3G diagnostic tester (the latest software) to Data Link Connector (DLC).
 Turn ignition switch to ON.
 Use X-431 3G diagnostic tester to record and clear the DTCs stored in the ECM.
06
 Select Read Code.
 If the DTC is detected, the malfunction indicated by the DTC is current. Go to the diagnosis procedure - Step 1.
 If DTC is not detected, the malfunction indicated by the DTC is intermittent
CAUTION
 When performing circuit diagnosis and test, always refer to the circuit diagram for specific circuit and
component information.
Diagnosis Procedure
1
Check ECM ground point
a. Turn ignition switch to LOCK.
b. Check ECM grounds E-026 and E-028
Repair or replace ground wire harness or
NG
ground point
156
06–
DTC Detection
DTC Definition
Ignition switch ON
(See page
Condition
 Main Relay
 Wire harness or connector
 ECM
06-18).
Chery Automobile Co., Ltd.
Possible Cause
(See page 06-18).
OK