Index Nissan Nissan PULSAR N13 Series / ASTRA LD Series (1.6 and 1.8 Liter) 1987 – 1991 year - Service Manual
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Fuel and Engine Management
113
(2) Disconnect the wiring connector from the MAT sensor.
(3) Unscrew the sensor from the inlet manifold.
with attention to the following points:
(1) Apply Loctite 567 or a similar conductive sealer to the threads of the sensor. Tighten the sensor (2) Ensure that the wiring connector is clean and tight. OXYGEN SENSOR
To Test - Code 13
(1) Run the engine until the normal operating temperature is obtained. (2) With the ignition switched Off, connect a jumper lead between terminals A and B on the (3) Start and run the engine at approximately 1 600-1 800 rpm for 2 minutes and note the ECM If the ECM warning lamp flashes at the rate of twice per second, proceed to operation (5).
If the ECM warning lamp flashes at the rate of once per second or slower, proceed as follows.
(4) Remove the jumper lead from the diagnostic link connector and run the engine above 2 000 rpm
If the ECM warning lamp lights, stop the engine, switch the ignition On and connect a jumper lead
If the ECM warning lamp does not light, an intermittent fault is indicated. Proceed as follows:
(a) Check for faulty wiring connections. Check that all wiring connectors are clean and secure. (b) Check that all earth wires are secure.
(5) Switch the ignition Off and disconnect the oxygen sensor wiring connector. Using a jumper lead (6) Start and run the engine at approximately 1 600-1 800 rpm and note the ECM warning lamp. If the ECM warning lamp functions as described, proceed to operation (7).
If the ECM warning lamp does not function as described proceed as follows:
(a) Check the wiring harness between the oxygen sensor wiring connector and the control unit wiring
{b) Check the earth circuit between the control unit wiring connect D6 and the right rear cylinder
(c) If no fault is found in (a) and (b) renew the control unit and retest for fault codes.
(7) Check the wiring harness earth circuit be- tween the control unit wiring connector D6 and the
If no fault is found, thoroughly check the oxygen sensor connector. If the connector is not faulty, renew
To Test - Code 44
(1) Run the engine until normal operating tem- perature is attained. (2) With the ignition switched Off, connect a jumper lead between terminals A and B on the (3) Start and run the engine at approximately 1 600-1 800 rpm for 2 minutes and note the ECM If the ECM warning lamp is off more than on or flashes at the rate of twice per second, proceed to
If the ECM warning lamp flashes evenly at the rate of once per second an intermittent fault is
(a) Check for faulty wiring connections. Check that all wiring connectors are clean and secure. (b) Check that all earth wires are secure.
(4) Switch the engine Off and disconnect the oxygen sensor wiring connector. (5) Start and run the engine at 1 600-1 800 rpm for at least 30 seconds and note the ECM warning If the ECM warning lamp flashes at the rate of twice per second proceed to operation (6).
If the ECM warning lamp extinguishes for at least 30 seconds, check the wiring harness between the
Repair or renew the wiring harness as necessary. If no fault can be found in the wiring harness, renew
Installed view of the oxygen sensor. |