Home Auto Repair 2004 – 2006 MAZDA3 PASSENGER JUNCTION BOX (PJB) DIAGNOSTIC TIPS

2004 – 2006 MAZDA3 PASSENGER JUNCTION BOX (PJB) DIAGNOSTIC TIPS

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Download 2004 – 2006 MAZDA3 DESCRIPTION There have been a variety of electrical problems reported where the root cause may be a poorly secured connector, unsecured wire, or bent terminal or pin to the PJB. Many of these problems have occurred after the PJB was removed and reinstalled, as is done for the HVAC diffuser plate or in-cabin filter installation. Examples of these problems include the following: While performing diagnostics, there is no communication with the PJB Door Ajar Light remains on with all of the doors closed Dome light remains on with doors closed or it is inoperative Fog Lights are inoperative A/C not cooling and compressor is inoperative Power door locks are inoperative Turn signals or hazards are inoperative Brake or ABS light remains on with no system problems found Dimmer switch is inoperative Keyless entry is inoperative (with ignition key reminder NOT on with key removed from the ignition). If a vehicle is presenting electrical problems and during diagnosis there are symptoms present that lead you to suspect a poor connection between a wiring harness connector and the PJB, inspect each harness connector and mating terminal on the PJB to determine if they have a proper connection by performing the inspection procedure below.