Procedures A & B
PROCEDURE A: TRAILER LIGHTS WIRING CONNECTOR TERMINAL CHECKCheck the condition of the BCM by performing a terminal check at the Trailer Lights Wiring Connector (near the trailer hitch) as follows.
1. Turn the ignition switch to the ON position.
2. Make sure the combination switch and hazard switch are OFF.
3. Using a Test Light check for power at terminals # 2 and # 5 (see Figure 1).
^ If there is power at either terminal replace the BCM. Return to the Repair Flow Chart for further instructions.
^ If there is NO power at either terminal the circuit is OK. Return to the Repair Flow Chart for further instructions.
4. Turn the ignition switch OFF.
PROCEDURE B: BCM SUB-HARNESS INSTALLATION & BCM REPLACEMENT
CAUTION:
Use suitable covers to protect upholstery, carpet, trim, etc. when performing this procedure.
1. If you determined the BCM needs to be replaced (from Procedure A Terminal Check)
^ First perform BCM Read Configuration using CONSULT-II.
^ To do this refer to READ CONFIGURATION PROCEDURE in section BCS in the applicable service manual.
2. Record all radio station presets and then disconnect the negative battery cable.
3. Remove the Driver's Side Instrument Panel Lower Cover (see Figure 2).
^ Remove two Screws at the lower corners of the Lower Cover.
^ Carefully pull the cover rearward to release the securing clips.
^ Disconnect all wire harness connectors from the panel.
4. Remove four Bolts and remove the Driver's Side Lower Knee Protector (see Figure 3).
5. Remove the LH Instrument Lower Cover next to the Accelerator Pedal (see Figure 4).
^ Carefully pull outward to release the Securing Clips.
6. If the BCM needs to be replaced as confirmed by Procedure A Terminal Check go ahead and replace the BCM now. Then continue with step # 8 (below).
^ Remove all three Harness Connectors from the BCM (see Figure 5).
^ Remove the two BCM Mounting Bolts and remove BCM (see Figure 5).
^ Install new BCM.
^ Reconnect the top connector ONLY (as viewed in Figure 5).
7. If the BCM does not need to be replaced
^ Install the new Sub-Harness.
^ Start by disconnecting ONLY the two vertical Connectors at the BCM (see Figure 5).
8. Connect the fuse end of the BCM Sub-Harness to the BCM as shown in Figure 6.
^ Make sure the connectors are securely connected ("snapped" in place) to the BCM.
9. At the other end of the BCM Sub-Harness:
^ Connect the White Connector to the vehicle-side harness white connector (see Figure 7a).
^ Then connect the Black Connector to the vehicle-side harness black connector (see Figure 7b).
^ Make sure the connectors are securely connected ("snapped" in place).
10. Secure the new BCM Sub-Harness to the Existing Vehicle Harness (see Figure 8).
^ Use the Tie Wrap that comes already attached to the new Sub-Harness.
11. Re-connect the negative battery cable.
12. Confirm the installed BCM Sub-Harness does not interfere with the operation of the adjustable pedal assembly.
NOTE:
It is okay if the BCM Sub-Harness has slight contact with the adjustable pedal assembly when the pedal assembly is adjusted to the end of its upward travel (closest to the driver).
13. Re-install all components in reverse order of removal.
14. Re-program all radio station presets.
15. If the BCM was replaced, you'll need to do the following:
IMPORTANT:
You MUST perform the following steps according to the applicable service manual to ensure the new BCM is properly programmed to the original vehicle settings.
^ BCM "Write Configuration" using CONSULT-II. Refer to "WRITE CONFIGURATION PROCEDURE" in section BCS of the applicable service manual.
^ Initialization of NATS System and Registration of all NATS Ignition Key I.D.s. Refer to Infiniti Technical Bulletin ITB04-018a.
^ I.D. Registration Procedure of the Low Tire Pressure Warning System. Refer to I.D. REGISTRATION PROCEDURE" in section "WT" of the applicable service manual.
^ Register I.D. Code for Remote Keyless Entry Key fobs. Refer to section "BL" of the applicable service manual.
^ BCM Headlamp Configuration. Refer to "HEADLAMP" information in section "LT" of the applicable service manual.