NTB01-073a
Contents
1. NISSAN NORTH AMERICA INC Copyright Classification Date Reference ELO1 022 NTBO1 073a November 9 2001 2002 ALTIMA MAXIMA STATIC RADIO NOISE CAUSED BY IGNITION COILS This bulletin has been revised The Applied Vehicle s were updated Please discard paper copies of NTB01 073 APPLIED VEHICLE S 2002 Altima L31 2002 Maxima A33 SERVICE INFORMATION if the radio of an applied vehicle exhibits the following symptom e Static noise heard from the speakers that follows engine speed on certain FM radio stations The cause may be the ignition coil resistors A new resistor assembly located inside the ignition coil tube is available to repair the described symptom if it should occur SERVICE PROCEDURE 1 Start the engine and allow it to idle 2 Turn radio on and search for several FM stations until a steady ticking or popping noise is heard through the speakers Notes e Weaker radio stations may make the static noise easier to detect if it exists e Increasing the treble and decreasing the bass settings may also make the ticking noise easier to detect if it exists 3 Ifthe incident is duplicated accelerate the engine and note if the frequency of the ticking or popping noise increases with engine speed 4 If the noise does not follow the engine speed the incident is not caused by the ignition coils Consult the appropriate section of the Service Manual to diagnose and repair2. the incident 5 If the noise follows the engine speed remove all ignition coils from the engine Refer to the 2002 vehicle s Service Manual for removal procedure of the ignition coils e Altima with 4 cylinder engine page EM 26 e Altima with 6 cylinder engine page EM 127 e Maxima MA 17 changing spark plugs steps 1 to 3 only 1 3 G2ZRUSA Notes for Maxima and Altima with 6 cylinder engine e It is only necessary to separate the intake collector from the intake manifold to remove the ignition coil Do not remove the throttle body from the intake collector e It is not necessary to drain the coolant 6 Replace the resistor assembly in all ignition coil tubes as follows A Pull the rubber boot away from the ignition coil Then twist and pull the ignition coil tube from the ignition coil to separate them see Figure 1 6 cylinder shown 4 cylinder similar gt Ignition coil TP010644 Figure 1 B Remove the old resistor assembly parts from the ignition coil tube and discard Insert the new resistor assembly into the ignition coil tube in the orientation shown in Figure 2 below 6 cylinder shown 4 cylinder similar TPO10646 Figure 2 2 3 WUE C Assemble the ignition coil tube to the ignition coil e Rotate the tube while pressing onto the coil e A pop sound will be heard when the rubber boot is seated correctly to the ignition coil e Ensure there are no gaps and bulges bet
3. ween the coil body and the rubber boot OT No gap ra No bulges aa Rubber boot Tanna 7 With bulges Rubber boot No Good TP010655 Figure 3 7 Install the repaired ignition coils with the new resistor assembly to the engine Refer to the 2002 vehcile s Service Manual for installation procedure of ignition coils e Altima with 4 cylinder engine page EM 26 e Altima with 6 cylinder engine page EM 127 Maxima MA 17 changing spark plugs steps 1 to 3 only 8 Check to ensure the incident has been resolved PARTS INFORMATION DESCRIPTION PART QUANTITY Spring Kit 6 cylinder 22468 8J125 1 Gasket Intake Collector 6 cylinder 14032 83105 1 Spring Kit 4 cylinder 22468 6N225 1 CLAIMS INFORMATION Submit a Primary Failed Part PP line claim using the following claims coding DESCRIPTION PFP OP CODE SYM DIA 0 5 hrs L31 QR R amp R All 4 or 6 Coils amp RPL 1 GXO7AA HB 32 Resistor Assy s includes R amp R Collector if required 2 0 hrs L31 VQ 1 Reference the Parts Information table above and use the indicated 4 or 6 cylinder Spring Kit P N as the PFP 2 5 hrs A33 VQ 3 AOTT
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NTB01 073a