Open the cover of the diagnostic connector 2 (Fig. 1) and close contacts 10 and 12 (technological jumper plug)
Turn on the ignition and observe the diagnostic lamp on the instrument cluster.
The diagnostic subsystem should issue code 12 three times in a row (Fig. 2):
- - one lamp on (0.5 s) - pause (1.5 s) - two lamp on - long pause (4 s);
- - one lamp on (0.5 s) - pause (1.5 s) - two lamp on - long pause (4 s);
- - one lamp on (0.5 s) - pause (1.5 s) - two lamp on - long pause (4 s).
If code 12 is absent, check the diagnostic circuit for an open or no contact in the wire connections according to the diagram (Fig. 3) in the following order (D2313 - 1ZKch - X5110 - jumper - X5112 - 6ZCH- 56Ch - 95Ch - “ground”).
If the indicated circuit is OK, then the D23 control unit must be replaced.
Fix the fault codes recorded in the memory of the electronic unit using the diagnostic lamp.
If there are no fault codes in the memory, the lamp will display code 12 (see Fig. 2).
If there is a fault code, for example, 131 (Fig. 4), or several codes that will be repeated three times each, find and eliminate the corresponding faults using the recommendations set out in the "Manual for the maintenance and repair of the engine control system ZMZ-4062.10 with distributed injection Mikas 7.1 ".
The interpretation of the fault codes is given in the table:
|
Fault codes recorded by the Mikas 7.1 unit |
|||
|---|---|---|---|
|
Element being diagnosed |
Malfunction |
The code |
Diagnostic conditions malfunctions |
|
mass flow sensor air - DMRV |
cliff |
13 |
Engine running |
|
Short circuit (short circuit) |
14 |
Engine running |
|
|
temperature sensor coolant - DTOZH |
cliff |
22 |
-- |
|
KZ |
21 |
-- |
|
|
temperature sensor air - DTV |
cliff |
18 |
5 seconds after turning on the ignition switch |
|
KZ |
17 |
||
|
Position sensor throttle valve - TPS |
cliff |
23 |
-- |
|
KZ |
24 |
-- |
|
|
Position sensor distributive shaft - DPRV |
Absence of impulses |
54 |
Engine running after exiting start mode |
|
Knock sensor - DD |
No signal |
41 |
Engine running at rotational speed crankshaft over 3000 rpm |
|
On-board network voltage |
Increased |
26 |
-- |
|
Reduced |
25 |
-- |
|
|
Position sensor crankshaft - DPKV |
Sync skip or extra impulses per revolution |
53 28 29 |
When rotating crankshaft |
|
Control unit - BU |
BU malfunction |
51 52 |
-- -- |
|
BU |
RESET control unit |
61 |
-- |
|
BU |
RAM failure control unit |
62 |
-- |
|
BU |
ROM failure control unit |
63 |
-- |
|
BU |
FLASH malfunction |
64 65 |
-- -- |
|
Nozzle 1 |
cliff |
132 |
With the ignition on -- -- |
|
KZ |
131 |
||
|
Short circuit to ground |
133 |
||
|
Nozzle 2 |
cliff |
135 |
With the ignition on -- -- |
|
KZ |
136 |
||
|
Short circuit to ground |
137 |
||
|
Nozzle 3 |
Обрыв |
138 |
With the ignition on -- -- |
|
KZ |
137 |
||
|
Short circuit to ground |
139 |
||
|
Nozzle 4 |
cliff |
142 |
With the ignition on -- -- |
|
KZ |
141 |
||
|
Short circuit to ground |
143 |
||
|
Additional air - RDV |
Winding fault 1: cliff |
162 |
Engine running -- -- --
Engine running -- -- -- |
|
KZ |
161 |
||
|
Short circuit to ground |
163 |
||
|
Winding fault 2: cliff |
165 |
||
|
KZ |
164 |
||
|
Short circuit to ground |
166 |
||
|
Fuel pump relay - RBN |
Break, short circuit to ground |
168 |
Relay off |
|
KZ |
167 |
When the relay is on |
|
|
Main relay - RG |
Break, short circuit to ground |
178 |
There are no conditions for operation for determining current fault |
|
KZ |
177 |
When the relay is on |
|
|
Diagnostic lamp |
Break, short circuit to ground |
182 |
With lamp off |
|
KZ |
181 |
When the lamp is on | |
|
Ignition coil 1 and 4 cylinders |
cliff |
231 234 |
Engine running -- -- |
|
KZ |
91 94 |
||
|
Ignition coil 2 and 3 cylinders |
cliff |
232 233 |
Engine running -- -- -- |
|
KZ |
92 93 |
||