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HOMESERVICE MANUALSMAZDA2006B4000 BASE, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE SYMPTOM TROUBLESHOOTING - (5 OF 5)GENERAL TEST INDEXGENERAL PINPOINT TEST 12: NO START
2006 Mazda B4000 Base, Automatic

General Pinpoint Test 12: No Start

2006 Mazda B4000 Base, AutomaticSECTION General Pinpoint Test 12: No Start
GENERAL PINPOINT TEST 12: NO START

PINPOINT TEST 12 NO START
STEP INSPECTION ACTION
1 ATTEMPT TO CRANK ENGINE
NOTE:
  • Does engine crank? 
 Yes Go to next step.
No See STARTING CONCERNS .
2 IDENTIFY TYPE OF NO START
NOTE:
  • The purpose of this test step is to identify intermittent No Starts in order to guide the technician to the proper repair procedure.
  • Does vehicle start now? 
 Yes Vehicle is an intermittent No Start.
See GENERAL PINPOINT TEST 4: INTERMITTENT  .
No Go to next step.
3 CHECK FOR VREF AT THROTTLE POSITION (TP) SENSOR
  • Disconnect TP sensor.
  • Key ON, Engine OFF (KOEO).
  • Measure voltage between VREF circuit (GY/W) and SIG RTN circuit (GY/R) at the TP sensor connector.
  • Key OFF.
  • Is voltage between 4.0 and 6.0 volts? 
 Yes Reconnect TP sensor.
Go to next step.
No See GENERAL PINPOINT TEST 1: VEHICLE REFERENCE VOLTAGE  .
4 CHECK FEPS CIRCUIT FOR SHORT TO POWER
  • Key ON, Engine OFF (KOEO).
  • Measure voltage between pin 13 (V) at data link connector D-01 and battery negative post.
  • Key OFF.
  • Is voltage greater than 9.0 volts? 
 Yes Repair short to power.
Restore vehicle.
Rerun Quick Test.
See PCM QUICK TEST .
No Go to next step.
5 CHECK PROFILE IGNITION PICK-UP (PIP) IN THE PCM
NOTE:
  • The WDS or equivalent tester must be connected to a reliable power source that is powered with the key in the START position (such as directly to the vehicle battery). Also verify that the vehicle battery is fully charged.
  • Access PIP PID.
  • While viewing the PIP PID, crank engine.
  • Is the PIP PID switching on and off? 
 Yes Key OFF.
See GENERAL PINPOINT TEST 13: IGNITION SCOPE PINPOINT TEST  to check ignition coils, plugs and wires.
If OK, Go to next step.
No See GENERAL PINPOINT TEST 8: CRANKSHAFT POSITION (CKP) SENSOR  .
6 CHECK FUEL PRESSURE
WARNING:
  • Before servicing or replacing any components in the fuel system, reduce the possibility of injury or fire following warning, caution, and handling directions found in general test 5 (fuel delivery). See GENERAL PINPOINT TEST 5: FUEL DELIVERY SYSTEM  .
  • Release fuel pressure.

    See FUEL PRESSURE RELIEF .

  • Install fuel pressure gauge SST  49 UN01 010.
  • WDS or equivalent tester connected.
  • Key ON, Engine OFF (KOEO).
  • Enter Output Test Mode and run fuel pump to obtain maximum fuel pressure.
  • Key OFF.
  • Is fuel pressure between 207-448 kPa (30-65 psi)? 
 Yes Go to next step.
No See GENERAL PINPOINT TEST 5: FUEL DELIVERY SYSTEM  .
7 CHECK FUEL PRESSURE LEAKDOWN
  • Install the fuel pressure gauge SST  49 UN01 010.
  • WDS or equivalent tester connected.
  • Key ON, Engine OFF (KOEO).
  • Access Output Test Mode and run fuel pump to obtain maximum fuel pressure.
  • Exit Output Test Mode.
  • Key OFF.
  • Verify fuel pressure remains within 16 kPa (5 psi) of the maximum pressure for one minute after turning off fuel pump.
  • Does fuel pressure remain within 16 kPa (5 psi)? 
 Yes Restore vehicle.
Go to next step.
No See GENERAL PINPOINT TEST 5: FUEL DELIVERY SYSTEM  .
8 CHECK FUEL INJECTORS FOR VPWR
NOTE:
  • Check at least two fuel injectors, one on each bank. A no start condition can exist only if greater than 50% of the fuel injectors are without VPWR.
  • Disconnect any two fuel injectors.
  • Key ON.
  • Measure VPWR circuit (R) voltage at fuel injector harness connector.
  • Is voltage greater than 10.5 volts? 
 Yes Key OFF.
Go to next step.
No Repair VPWR circuit.
9 CHECK FUEL INJECTORS' ABILITY TO DELIVERY FUEL
  • Connect Fuel Pressure Gauge SST  49 UN01 010 to schrader valve.
  • Locate and disconnect the fuel pump shutoff switch.
  • Cycle key several times.
  • Monitor SST while cranking the engine for at least five seconds.
  • Is there a pressure drop greater than 34 kPa (5 psi) while cranking the engine? 
 Yes The EEC system is not the cause of the no start.
See SYMPTOM TROUBLESHOOTING CHART - ENGINE DRIVEABILITY .
No Replace PCM.
See POWERTRAIN CONTROL MODULE (PCM) REMOVAL / INSTALLATION .
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.