Dacia SuperNova (engine E7J). Instruction - page 29

E7J-A-2/60 ENGINE

17

IGNITION AND INJECTION

17 - 26

DIAGNOSING-INTERPRETING THE DEFECTS

DEFECT
PRESENT
OR
MEMORIZED

CYLINDER 4 - INJECTOR CIRCUIT

1. Short-circuit at 12 V along the way to the pin 89 of the calculator

(injector command)

2. Short-circuit to the mass along the way to pin 89 of the calculator

(injector command)

3. Open circuit along the way to the pin 89 of the calculator (injector
command)

SUGGESTIONS

Conditions of breakdown detection by the calculator:

-the engine is started
Condition of performing the diagnosing:
-defect is present
-the defect has been memorized but is recorded in the “present” state.

Check the resistance of injector 4.
Change injector if necessary.

Check, after setting the contact, the presence of 12V at the pin 1 of injector 4.
Remedy, if necessary, the circuit up to the 238 actuating relay.

Connect the 90-way terminal-tester instead of the calculator and check the insulation
and the continuity along the circuit:
pin 89 of calculator

♦ pin 2 of injector 4.

Remedy if necessary.

The problem is not yet solved! Consequently, the injection calculator must be changed.
CAUTION! The destruction of the calculator has probably been caused by an

electric shock.
The cause of the destruction must be found before mounting a new
calculator.

AFTER
REPAIR

Erase defects memorized by the computer.
Perform the steps under “Suggestions” to confirm the repair.
Remedy other possible defects

9.

E7J-A-2/60 ENGINE

17

IGNITION AND INJECTION

17 - 27

DIAGNOSING-INTERPRETING THE DEFECTS

DEFECT
PRESENT OR
MEMORIZED

CYLINDERS 1 AND 4 IGNITION COIL CIRCUIT
1. Short-circuit at 12 V along the way to the pin 32 of the

calculator (cylinders 1 and 4 coil command)

2. Open circuit or short-circuit to the mass along the way to

pin 32 of the calculator (cylinders 1 and 4 coil command).

SUGGESTIONS

Conditions of breakdown detection by the calculator:
-the engine is started or turned with the starter for 10 seconds
Condition of performing the diagnosing:
-defect is present
-the defect has been memorized but is recorded in the “present”
state.

Check the resistance

of coil between the outlets for cylinders 1 and 4.

Change

the coil if necessary.

Check, after setting the contact, the presence of +12V at the pole 1 of oil pump 236
relay.
Remedy it if necessary.

Connect the 90-way terminal-tester instead of the injection calculator and check the
insulation and the continuity along the circuit:

pin 32 of calculator

♦ pin A of ignition coil.

Remedy if necessary.

Check:
-connection and state of the 236 oil-pump relay
-the presence of +12 V, after contact, at the 1 pole of the 236 relay
-the circuit between the 2 pole of the 236 relay and pin 68 of the injection calculator
-the coil of the 236 oil-pump relay.
Remedy if necessary.

The problem is not yet solved! Consequently, the injection calculator must be changed.
CAUTION! The destruction of the calculator has probably been caused by an

electric shock.
The cause of the destruction must be found before mounting a new
calculator.

10.

AFTER

REPAIR

Erase defects memorized by the computer.
Perform the steps under “Suggestions” to confirm the repair.
Remedy other possible defects.

E7J-A-2/60 ENGINE

17

IGNITION AND INJECTION

17 - 28

DIAGNOSING-INTERPRETING THE DEFECTS

CYLINDERS 2 AND 3 IGNITION COIL CIRCUIT
1.

Short-circuit at 12 V along the way to the pin 1 of the
calculator (cylinders 2 and 3 coil command)

2.

Open circuit or short-circuit to the mass along the way to
pin 1 of the calculator (cylinders 2 and 3 coil command).

DEFECT
PRESENT OR
MEMORIZED

Conditions of breakdown detection by the calculator:

-the engine is started or turned with the starter for 10 seconds
Condition of performing the diagnosing:
-defect is present
-the defect has been memorized but is recorded in the “present”
state.

SUGGESTIONS

Check the resistance of coil between the outlets for cylinders 2 and 3.
Change the coil if necessary.

Check, after setting the contact, the presence of +12V at the pole 1 of oil pump 236
relay.
Remedy it if necessary.

Connect the 90-way terminal-tester instead of the injection calculator and check the
insulation and the continuity along the circuit:
pin 1 of calculator

pin B of ignition coil.

Remedy if necessary.

Check:
-connection and state of the 236 oil-pump relay
-the presence of +12 V, after contact, at the 1 pole of the 236 relay
-the circuit between the 2 pole of the 236 relay and pin 68 of the injection calculator
-the coil of the 236 oil-pump relay.
Remedy if necessary.

The problem is not yet solved! Consequently, the injection calculator must be changed.
CAUTION! The destruction of the calculator has probably been caused by an

electric shock.
The cause of the destruction must be found before mounting a new
calculator.

Erase defects memorized by the computer.
Perform the steps under “Suggestions” to confirm the repair.
Remedy other possible defects.

AFTER
REPAIR

11.

E7J-A-2/60 ENGINE

17

IGNITION AND INJECTION

17 - 29

DIAGNOSING-INTERPRETING THE DEFECTS

DEF ECT

PRE SEN TOR

M E M O RI Z E D

INFORMATION ROTATION SENSOR
1. Faulty cogs of the engine flywheel
2. Absence of flywheel signal.

In order to do this type of diagnosing, the sensor for atmospheric pressure
must not be faulty
Conditions of breakdown detection by the calculator:
-the contact is taken and the dialogue with the calculator is waited for to
be lost, then the dialogue with the calculator is re-entered and the memo-
rized defects are erased
-operate the starter for 10 seconds or start the engine and keep it in idle
mode.
Condition of performing the diagnosing:
-defect is present
-the defect has been memorized but is recorded in the “present” state.

Check the connection and the state of the rotation sensor
Change the connector if necessary.

Check the resistance of rotation sensor.
Remedy rotation sensor if necessary.

Connect the 90-way terminal-tester instead of the calculator and check the insulation, the
continuity and the absence of contact resistance along the circuits:
pin 54 of calculator

pin A of rotation sensor

pin 24 of calculator

pin B of rotation sensor.

Remedy if necessary.

Check the condition of the cogs of the engine flywheel.

Change the rotation sensor if the incident persists.

The problem is not yet solved! Consequently, the injection calculator must be changed.
CAUTION! The destruction of the calculator has probably been caused by an

electric shock.
The cause of the destruction must be found before mounting a new
calculator.

Erase defects memorized by the computer.
Perform the steps under “Suggestions” to confirm the repair.
Remedy other possible defects.

AFTER
REPAIR

12.

SUGGESTIONS

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