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Diagnostic Manual, Engines, Volume 3

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LOCATION:    8.2 Diagnostic Module (DM)   >   11 Diagnostic Trouble Code (DTC) Memory


Diagnosis- Diagnostic Trouble Code (DTC) Memory

Preparation for recalling diagnostic trouble code (DTC) memory
1. Connect impulse counter scan tool and adaptor for impulse counter scan tool to diagnostic connector (X11/4) according to connection diagram (see section 0).
Note:
Connect impulse counter scan tool as follows:
red wire to socket 3,
black wire to socket 1 and
yellow wire to:

Diagnostic module socket 19
Base module socket 8

LH-SFI control module socket 4
Ignition control module socket 17
EA/CC/ISC control module socket 7

2. Recall control modules' diagnostic trouble code memory and clear stored trouble codes (see section 0).

Diagnostic Trouble Code (DTC) Readout, Diagnostic Module

Diagnostic Trouble Code (DTC) Possible Cause Remedy/Test Step 1)
1 No malfunction in systems monitored -
2 Heated oxygen sensor inoperative Test LH-SFI, section 3.1.
3 Lambda control inoperative Test LH-SFI, section 3.1.
4 Air injection inoperative Test LH-SFI, section 3.1.
5 Exhaust gas recirculation inoperative Test LH-SFI, section 3.1.
6 Idle speed control inoperative Test electronic accelerator, section 6.2.
7 Ignition system defective Test distributor ignition system, section 5.2.
8 Engine coolant temperature sensor, open/short circuit Test LH-SFI, section 3.1.
9 Intake air temperature sensor, open/short circuit Test LH-SFI, section 3.1.
10 Voltage at mass air flow sensor too high/low Test LH-SFI, section 3.1.
11 TN-signal (rpm) at LH-SFI control module (N3/1) defective Test LH-SFI, section 3.1.
12 Heated oxygen sensor heater, open/short circuit Test LH-SFI, section 3.1.
13 Camshaft position sensor signal of ignition control module defective. Test LH-SFI, section 3.1.
14 Intake manifold pressure at start (in ignition control module - N1/3) too low/high Vacuum supply to N1/3,
test distributor ignition system, section 5.2.
15 Wide open throttle information defective Test electronic accelerator, section 6.2.
16 Closed throttle position information defective Test electronic accelerator, section 6.2.
17 Data exchange malfunction between individual control modules 23 7.0.
18 Adjustable camshaft timing solenoid, open/short circuit Test LH-SFI, section 3.1.
19 Fuel injectors open/short circuit or
emission control system adaptation in LH-SFI control module (N3/1) at limit
Test LH-SFI and reset LH-SFI control module adaptation to mean value, section 3.1.
20 Speed signal not present Test electronic accelerator, section 6.2.
21 Purge switchover valve, open/short circuit Test LH-SFI, section 3.1.
22 Camshaft position sensor signal defective Test distributor ignition system, section 5.2.
23 Intake manifold pressure (in ignition control module - N1/3) with engine running too low/high Vacuum supply to N1/3,
test distributor ignition system, section 5.2.
24 Starter ring gear segments and/or crankshaft position sensor defective Test distributor ignition system, section 5.2.
25 Knock sensors or ignition control module defective Test distributor ignition system, section 5.2.
26 Upshift delay switchover valve, open/short circuit Test LH-SFI, section 3.1.
27 Engine coolant temperature sensor deviation between
sensor circuit 1 and sensor circuit 2
Test LH-SFI, section 3.1.
28 Engine coolant temperature sensor (engine coolant temperature change monitor) Test LH-SFI, section 3.1.
1) Observe Preparation for Test, see 22 .