All the fuses are ok but no power getting to driving lights or headlights nither to brakes

60

Asked by Jan 27, 2014 at 02:12 PM about the 1988 Nissan 300ZX 2 Dr GS 2+2

Question type: General

All fuses are good and car starts n runs but
no power on lighting

11 Answers

18,465

Could be bad headlight switch but your brakes are on a separate switch. Is it the brake lights or park lights on rear not working?

1 out of 1 people think this is helpful.
60

None of the electrical lighting workin

3 out of 3 people think this is helpful.
18,465

Check all the grounds under the hood for loose or corroded connections.

2 out of 2 people think this is helpful.
60

There is no power to lights high beams come on bit that it

2 out of 2 people think this is helpful.
60

And I have checked all the connections

60

Under hood and dash

18,465

Yes but look at the black wires going to the body and frame.

60

All ok nothing touching

1 out of 1 people think this is helpful.
18,465

Sometimes the lights won't work if there is a problem with a sensor. Try this - Nissan offers CONSULT tests for a fee to pin point problems through the ECU. There are procedures to get some of the same results without a CONSULT tool from the ECU's memory. 1. Remove the passenger floor mat (1.). 2. Pull back carpet. It's held up with 3 spots of velcro (2.). 3. Remove the wooden floorboard (3.) (4 x 10 mm bolts) 4. The screw potentiometer is on the right side of the ECU, the coding LED is in the oval hole above it (4.). 5. Turn the ignition switch on, but do not start the engine. 6. Turn 'diagnostic mode selector' (pot on side) fully clockwise. Wait at least 2 seconds, then turn pot fully counter clock-wise. The ECU is now in Diagnostics MODE II 7. Read the codes from the flashing LED on the side of the ECU (or the check engine light). Long flash is first digit, short flash is 2nd digit, the codes are at the bottom of this page. 8. To exit MODE II, turn pot fully clock-wise. Wait at least 2 seconds, then turn the potentiometer fully counter clock-wise, or... 9. Start engine with the ECU in MODE II to enter MODE II - Heated Oxygen Sensor (O2) Monitor . The ECU is now monitoring the left O2 sensor. Warm the engine to normal operating temperature, then run at 2000 rpm for 2 minutes. Check that the LED blinks (or the check engine light) more than 5 times every 10 seconds at 2000 rpm. 10. To change to right sensor turn the ECU potentiometer clockwise with engine still running, wait 2 seconds, turn it back. Check the lights at 2000 rpm again for a similar switching condition. NOTE: Light indicates signal from sensor to ecu. ON=rich, Off=lean. Blinking light means system is constantly adjusting between lean and rich which is normal. Any other indication would be abnormal and require further investigation. The switched on/off is 'closed loop', while a constant on or off is 'open loop' 11. To exit MODE II - Heated Oxygen Sensor Monitor, turn the potentiometer fully counter clock-wise and stop the engine. LED codes for MODE II: 11: crank angle sensor circuit 12*: air flow meter circuit 13*: engine coolant temp. sensor circuit 14*: vehicle speed sensor circuit 21: ignition signal circuit 26*: boost pressure sensor 31*: ECU 32*: EGR function 33*: exhaust gas sensor circuit (left) 34: detonation sensor circuit 35*: exhaust gas temp. sensor circuit 42: fuel temp. sensor circuit 43*: throttle position sensor circuit 45*: injector leak 51*: injector circuit 53*: exhaust gas sensor circuit (right) 54: signal circuit from A/T control to ECU 55: NO malfunctions in the above *Will cause the Check Engine light to come on under normal (MODE I) operating conditions. 1.passenger floormat removed 2.passenger carpet pulled back 3.ECU exposed under wooden floorboard 4.pot screw in hole & LED hole (oval) Trouble Code: Detected Items: Malfunction Caused By: Check:: 11* Camshaft Angle Sensor circuit (CAS) Either 1° or 120° signal is not entered for the first few seconds of engine cranking. Either 1° or 120° signal is not input often enough while the engine speed is higher then the specified RPM. Harness and connector (if harness and connector are OK, CAS might be bad) 12 Mass Air-Flow Sensor circuit (MAS) The MAS sensor circuit is open or shorted (abnormally high or low voltage is registered). Harness and connector (if harness and connector are OK, MAS might be bad) 13 Engine Coolant Temp. Sensor The Engine Coolant Temp. Sensor circuit is open or shorted (abnormally high or low voltage is registered). Harness and connector Engine Coolant Temp. Sensor 14 Speed Sensor circuit The Speed Sensor circuit is open or shorted. Harness and connector Speed Sensor switch (reed switch) 21* Ignition signal circuit The ignition signal in the primary circuit is not entered during engine cranking or running. Harness and connector Power Transistor Unit 26 Boost Pressure sensor (Turbo models) The boost pressure sensor is open or shorted (abnormally high or low voltage is registered). Harness and connector Boost pressure leaks Boost pressure sensor 31 ECU ECU calculation function is failing Replace ECU 32 EGR function EGR valve does not operate (valve spring does not lift) EGR valve EGRC-solenoid valve 33 O2 Sensor (left side) The O2 Sensor is open or shorted (abnormally high or low voltage is registered). Harness and connector O2 sensor Fuel pressure Injectors Intake air leaks 34 Detonation Sensor circuit The detonation sensor circuit is open or shorted (abnormally high or low voltage is registered). Harness and connector Detonation sensor 35 EGR Temp. Sensor The EGR Temp. Sensor circuit is open or shorted (abnormally high or low voltage is registered). Harness and connector EGR temp. sensor 42 Fuel Temp Sensor circuit The Fuel Temp. Sensor circuit is open or shorted (abnormally high or low voltage is registered). Harness and connector Fuel temp. sensor 43 Throttle Position Sensor circuit The Throttle Position Sensor circuit is open or shorted (abnormally high or low voltage is registered). Harness and connector Throttle position sensor 45 Injector leak Fuel leaks from the injectors Injectors 51 Injector circuit The injector circuit is open Harness and connector Injectors 53 O2 Sensor (right side) The O2 Sensor is open or shorted (abnormally high or low voltage is registered). Harness and connector O2 sensor Fuel pressure Injectors Intake air leaks 54 Signal circuit from the automatic transmission (A/T) (A/T models only) The A/T communication line is open or shorted Harness and connector * Check items causing a malfunction of the CAS circuit first if both diagnostic codes 11 & 21 are displayed at the same time.

60

I checked it with a another power source so I jumped it from a mother power sorce

105

Relays on the driver side behind windshield washer check for corrosion.

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