B HOW TO USE THIS MANUAL 1-1 POWER SOURCE (Power-Load Reference) J/B No.2 (Engine Compartment) 30A RTR Remain Illumination Relay No. 2) P5A CHARGE Alternator 15A HEAD LH Headlight LH 15A HEAD RH Headlight RH Turn Signal Flasher Horn, Horn Relay 15A HAZ-HORN Hazard Switch Fuel Pump 15A EFI Circuit Opening Relay, TCCS ECU, Crank Generator, ISC Valve, VSV, BVSV, Fuel Pressure-up VSV, Intake Air Control Valve Air Damper, O2 Sensor Main, DX Sensor Clock 10A RAD O/PRD J Super Monitor Computer Auto Antenna Computer Auto Antenna Radio and Turn Signal 1-2 POWER SOURCE [Circuit diagram showing power distribution from battery through fuses] J/B No. 2 RELAY LOCATIONS [Diagram showing relay box layout with labels: CHG RL FUEL PMP RL AWC RL HEAD LIGHT RELAY FAN RELAY MAIN FAN RELAY SUB FOG TAIL LIGHT CIRCUIT INJ NO. 1 FAN IG COIL CIRCUIT OPENING HAZ-HORN FLASHER NO. 1 FAN EFI] 2. Inspection of Common Circuits (a) Check battery and fusible link (b) Check related systems Check how the HEAD FUSE is related to the system. In system No. 1-1 (POWER SOURCE), you will find a chart listing the relationship between the fuses and components. Here we can see that the HEAD fuses are related only to their respective headlights. (c) Check the circuit from the battery to the HEAD FUSE. ① In system No. 1-2 (POWER SOURCE), tha power circuits for all fuses are listed. The circuit between the battery and HEAD fuse branches off with fuses HAZ-HORN 15A etc. ② Turn on the HAZARD switch Okay .... No trouble in circuit up to HAZ-HORN junction. Bad ...... Trouble lies between fusible link and J/B No. 2. (d) Check the HEADLIGHT RELAY (Return to HEADLIGHT page) 1 The circuit shows that the HEADLIGHT RELAY is in J/B No. 2. 2 Installation of the relay can be found by referring to the RELAY LOCATIONS. The HEADLIGHT RELAY is located in J/B No. 2 in the engine compartment as shown. 3 Check for power to the headlight relay coil. ① Turn the headlight switch to HEAD. ② Using a voltmeter, check for voltage as shown below. Negative (-) Probe .... Pin No. 6 of 2B. Positive (+) Probe ..... Pin No. 2 of 2A. Confirm that there is voltage