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Autodata - Diagnostic Trouble Codes Fault locations and probable causes - 2004 edition

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11 2 Engine managementltransmission<br />

Model: 323 l,3ll,6ll,8/2,O (BJ) 6261Estate l,8/2,O (GFIGW)<br />

MX-5 1,611,8<br />

EOBD<br />

type<br />

I <strong>Fault</strong> location Probable cause<br />

PI606<br />

PI 608<br />

PI609<br />

PI621<br />

PI622<br />

Engine control relay<br />

Engine control module (ECM)<br />

Engine control module (ECM) - knock control<br />

Engine control module (ECM)limmobilizer control<br />

module - immobilizer codes do not match<br />

Engine control module (ECM)limmobilizer control<br />

module - ignition key codes not match<br />

PI623 1 Engine control module (ECM) - EEPROM error I ECM<br />

Wiring, engine control relay<br />

PI624 Engine control module (ECM)- immobilizer deactivation Battery disconnected - erase trouble code,<br />

signal missing<br />

immobilizer system malfunction<br />

PI 627<br />

PI631<br />

PI 632<br />

PI633 / Engine control module (ECM) - supply voltage high Wiring, voltage surge when battery disconnected,<br />

alternator<br />

PI 634<br />

ECMJABS electrical connection - communication error<br />

Alternator - output voltage low<br />

Engine control module (ECM) - supply voltage low<br />

Alternator - output voltage highlbattery voltage low<br />

ECM<br />

ECM<br />

PI649 1 Engine control module (ECM) - defective I ECM<br />

PI650 1 Power steering pressure (PSP) switch I Wiring, PSP switch<br />

Incorrectly programmed immobilizer control<br />

modulelECM<br />

lncorrectldamaged key, ECM incorrectly<br />

programmed<br />

Wiring, ABS control module, ECM-<br />

Wiring, alternator drive belt, alternator<br />

Wiring, alternator, battery<br />

-- -<br />

Wiring, alternator, battery<br />

PI720 I Vehicle speed sensor (VSS) I Wiring, speedometer, VSS<br />

PI740 Torque converter clutch (TCC) solenoid - open circuit Wiring open circuitlshort to positive, poor<br />

/ connection, TCC solenoid, ECM<br />

PI 742 Torque converter clutch (TCC) solenoid - short circuit Wiring short to earth, poor connection, TCC<br />

I solenoid, ECM<br />

PI743 I Torque converter clutch (TCC) solenoid I Wiring, TCC control solenoid<br />

PI 744<br />

PI751<br />

Torque converter clutch (TCC) solenoid<br />

Shift solenoid (SS) A - open circuit<br />

Wiring, TCC solenoid<br />

Wiring open circuitlshort to positive, poor<br />

connection, SS, ECM<br />

PI752 1 Shift solenoid (SS) A - short circuit I Wiring short to earth, poor connection, SS, ECM<br />

PI756 I Shift solenoid (SS) B - open circuit Wiring open circuitlshort to positive, poor<br />

connection, SS, ECM<br />

PI757<br />

PI 765<br />

Shift solenoid (SS) B - short circuit<br />

Shift timing solenoid, 3-2<br />

PI770 I Overrunning clutch solenoid I Wiring, overrunning clutch solenoid<br />

PI771<br />

PI 772<br />

PI 790<br />

Throttle position (TP) sensor, AT circuit - open circuit<br />

Throttle position (TP) sensor, AT circuit - short circuit<br />

Throttle position (TP) sensor<br />

Wiring short to earth, poor connection, SS, ECM<br />

Wiring, shift timing solenoid<br />

Wiring open circuit, poor connection, TP sensor,<br />

TCM<br />

Wiring short to earth, poor connection, TP sensor,<br />

TCM<br />

Wiring, TP sensor<br />

4

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