Autodata - Diagnostic Trouble Codes Fault locations and probable causes - 2004 edition
1 578 I,,,,,,,,,,, /Autodata Engine management Year: 1993-97 Engine code: ABS, AAU, AAV System: Bosch Mono-Motronic MA1.2.2 I In glovebox, driver's side General information 0 Refer to the front of this manual for general test conditions, terminology, detailed descriptions of wiring faults and a general trouble shooter for electrical and mechanical faults. Trouble codes are displayed by using an LED connected to one of the ECM terminals. The ECM fault memory can also be checked and erased using diagnostic equipment connected to the data link connector (DLC). Self-diagnosis using flash type trouble codes may not display all available diagnostic information. Carry out road test for at least 10 minutes. Ensure accelerator pedal is briefly fully depressed and engine speed exceeds 3000 rpm. Each trouble code consists of four groups of one to four flashes. A 2,5 second pause separates each trouble code group H [A]. ReDeat switch o~eration. Note trouble codes. Com~are with tro"ble code table. End of test sequence indicated by trouble code 0000 (long flashes). Switch ignition OFF. Rectify faults as necessary. Accessing Ensure ignition switched OFF. Bridge data link connector (DLC) terminals 4 and 15 with a switched lead - contacts normally open O. NOTE: DLC terminal 15 is connected to ECM terminal 11. Connect LED test lamp between data link connector (DLC) terminal 16 and ECM terminal 4 0. ECM located in plenum chamber. NOTE: DO NOT disconnect ECM multi-plug as this will erase fault memory. Start engine. Allow to idle. NOTE: If engine does not start' Crank engine for 6 seconds. Leave ignition switched ON. Operate switch for 4 seconds minimum. Release switch. Check that LED flashes. Count LED flashes. Note trouble code.
Engine management I Erasing Method 1 Ensure ignition switched OFF. Bridge data link connector (DLC) terminals 4 and 15 with a switched lead - contacts normally open 8. NOTE: DLC terminal 15 is connected to ECM terminal 11. Connect LED test lamp between data link connector (DLC) terminal 16 and ECM terminal 4 8. Access trouble codes. Switch ignition OFF. Operate switch and hold. Switch ignition ON. Release switch after 5 seconds. Check that LED flashes. ldle speed control (ISC) actuator activated. Trouble code displayed: 1232. Operate switch for 4-6 seconds to activate each of the following components: Intake manifold heater. Trouble code displayed: 4342. Evaporative emission (EVAP) canister purge valve. Trouble code displayed: 4343. After activation of last component operate switch for 4-6 seconds to display flash code 0000 (long flashes). Fault memory automatically erased. Repeat checking procedure to ensure no data remains in ECM fault memory. Method 2 Ensure ignition switched OFF. Disconnect ECM multi-plug or battery earth lead. NOTE: ECM adaptive memory may be erased causing erratic running faults. Carry out road test to allow ECM to re-learn basic values. WARNING: Disconnecting the battery may erase memory from electronic units (e.g. radio, clock). Trouble code identification type 4-digit 0000 I End of test sequence 1 - 1111 1231 1232 Fault location Engine control module (ECM) Vehicle speed sensor (VSS) Idle speed control (ISC) actuator Probable cause 2113 8 ( Crankshafl position (CKP) sensor I Insecure rotor, wiring, CKP sensor 2121 I Closed throttle position (CTP) switch Accelerator cable adjustment, CTP switch adjustment, wiring, CTP switch 221 2 2234 231 2 I Engine coolant temperature (ECT) sensor I Wiring, poor connection, ECT sensor ECM Wiring, speedometer, VSS 2322 I Intake air temperature (IAT) sensor I Wiring, IAT sensor 2341 Throttle position (TP) sensor Engine control module (ECM) - supply voltage Wiring, multi-plug incorrectly wired, ISC actuator Wiring, poor connection, TP sensor Battery, wiring 2342 I Heated oxygen sensor (H02S) 1 Wiring, H02S, heating inoperative, fuel level low 2413 4444 Heated oxygen sensor (H02S) - lambda control Mixture control (MC) No fault found Heating inoperative, exhaust leak, misfire, fuel pressurelpump, EVAP canister purge valve Fuel level low, fuel pressurelpump, intakelexhaust leak, misfire, H02S, EVAP canister purge valve, injector, excessive fuel in engine oil - 8 Trouble code may be displayed if engine is not idling during self-diagnosis due to missing CKP sensor signal. Ignore trouble code if engine starts. After repairs, erase learnt lambda control values: Wait 30 seconds. Disconnect battery or ECM multi-plug for at least 30 seconds. Carry out road test to allow ECM to re-learn basic values.
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1 578 I,,,,,,,,,,,<br />
/<strong>Autodata</strong><br />
Engine management<br />
Year: 1993-97<br />
Engine code: ABS, AAU, AAV<br />
System: Bosch Mono-Motronic MA1.2.2<br />
I<br />
In glovebox, driver's side<br />
General information<br />
0 Refer to the front of this manual for general test conditions,<br />
terminology, detailed descriptions of wiring faults <strong>and</strong> a<br />
general trouble shooter for electrical <strong>and</strong> mechanical faults.<br />
<strong>Trouble</strong> codes are displayed by using an LED connected to<br />
one of the ECM terminals.<br />
The ECM fault memory can also be checked <strong>and</strong> erased<br />
using diagnostic equipment connected to the data link<br />
connector (DLC).<br />
Self-diagnosis using flash type trouble codes may not<br />
display all available diagnostic information.<br />
Carry out road test for at least 10 minutes.<br />
Ensure accelerator pedal is briefly fully depressed <strong>and</strong><br />
engine speed exceeds 3000 rpm.<br />
Each trouble code consists of four groups of one to four<br />
flashes.<br />
A 2,5 second pause separates each trouble code group H [A].<br />
ReDeat switch o~eration. Note trouble codes. Com~are with<br />
tro"ble code table.<br />
End of test sequence indicated by trouble code 0000<br />
(long flashes).<br />
Switch ignition OFF. Rectify faults as necessary.<br />
Accessing<br />
Ensure ignition switched OFF.<br />
Bridge data link connector (DLC) terminals 4 <strong>and</strong> 15 with a<br />
switched lead - contacts normally open O.<br />
NOTE: DLC terminal 15 is connected to ECM terminal 11.<br />
Connect LED test lamp between data link connector (DLC)<br />
terminal 16 <strong>and</strong> ECM terminal 4 0.<br />
ECM located in plenum chamber.<br />
NOTE: DO NOT disconnect ECM multi-plug as this will erase fault<br />
memory.<br />
Start engine. Allow to idle.<br />
NOTE: If engine does not start' Crank engine for 6 seconds.<br />
Leave ignition switched ON.<br />
Operate switch for 4 seconds minimum.<br />
Release switch. Check that LED flashes.<br />
Count LED flashes. Note trouble code.
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