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Starting System Pinpoint Test 1: Engine Does Not Crank

STARTING SYSTEM PINPOINT TEST 1: ENGINE DOES NOT CRANK

PINPOINT TEST 1 ENGINE DOES NOT CRANK
STEP INSPECTION ACTION
1 CHECK THE BATTERY
  • Check the battery condition and charge.
  • Is the battery OK? 
 Yes Go to next step.
No Charge or replace the battery as required. See BATTERY AND BATTERY TRAY REMOVAL / INSTALLATION . Test the system for normal operation.
2 CHECK THE NEGATIVE BATTERY CABLE
  • Measure the voltage between the positive battery post and the negative battery cable connection at the cylinder block.
  • Is the voltage reading greater than 10 volts? 
 Yes Go to next step.
No Replace the negative battery cable. See BATTERY CABLES REMOVAL / INSTALLATION - 2.3L . Test the system for normal operation.
3 CHECK THE STARTER MOTOR GROUND
  • Measure the voltage between the battery positive post and the starter motor case.
  • Is the voltage reading greater than 10 volts? 
 Yes Go to next step.
No Clean the starter motor mounting flange and make sure the starter motor is properly mounted. Test the system for normal operation.
4 CHECK THE POWER SUPPLY TO THE STARTER MOTOR
  • Measure the voltage at the starter motor 0119-01 B terminal.
  • Is the voltage reading greater than 10 volts? 
 Yes Go to next step.
No Replace the positive battery cable.
See BATTERY CABLES REMOVAL / INSTALLATION - 2.3L . Test the system for normal operation.
5 CHECK THE STARTER MOTOR
  • Connect one end of a jumper wire to the starter motor 0119-01 B terminal and momentarily connect the other end to the starter solenoid S terminal.
  • Does the starter motor engage and the engine crank? 
 Yes Go to next step.
No Replace the starter motor.
See STARTER MOTOR REMOVAL / INSTALLATION - 2.3L . See STARTER MOTOR REMOVAL / INSTALLATION - 3.0L . See STARTER MOTOR REMOVAL / INSTALLATION - 4.0L . Test the system for normal operation.
6 CHECK START INPUT TO THE STARTER MOTOR
  • Disconnect starter motor connector 0119-02 from starter solenoid S terminal.
  • Hold the ignition switch to the START position.
  • Measure the voltage at the starter motor solenoid S terminal.
  • Is the voltage reading greater than 10 volts? 
 Yes Clean the starter solenoid S terminal and connector. Check the wiring and the starter motor for a loose or intermittent connection. Test the system for normal operation.
No Go to next step.
7 CHECK THE START INPUT TO THE STARTER RELAY
  • Key OFF.
  • Disconnect starter relay 48 from the battery junction box.
  • Hold the ignition switch in the START position.
  • Measure the voltage at the starter relay circuit T/R.
  • Is the voltage reading B+? 
 Yes Go to next step.
No Go to step 12.
8 CHECK THE BATTERY SUPPLY TO THE STARTER RELAY
  • Key OFF.
  • Measure the voltage at the starter relay circuit BR/P.
  • Is the voltage reading B+? 
 Yes Go to next step.
No Repair the open in BR/P wire. Test the system for normal operation.
9 CHECK THE STARTER RELAY GROUND
  • Measure the resistance between the starter relay circuit DL/O and ground.
  • Is the resistance reading 5 ohms or less? 
 Yes Go to next step.
No Repair DL/O wire for an open. Test the system for normal operation.
10 CHECK Y/LB FOR A SHORT TO GROUND
  • Disconnect starter motor connector 0119-02 from starter solenoid S terminal.
  • Measure the resistance between the starter relay circuit Y/LB wire and ground.
  • Is the resistance reading 10, 000 ohms or less? 
 Yes Repair Y/LB wire for a short to ground. Test the system for normal operation.
No Go to next step.
11 CHECK Y/LB WIRE FOR AN OPEN
  • Measure the resistance of Y/LB wire between the starter relay and the starter solenoid 0119-02 S terminal.
  • Is the resistance reading 5 ohms or less? 
 Yes Replace the starter relay. Test the system for normal operation.
No Repair Y/LB wire for an open. Test the system for normal operation.
12 CHECK THE START INPUT TO THE CLUTCH PEDAL POSITION SWITCH (CPP)
  • Disconnect clutch CPP switch or jumper connector 0119-03.
  • Hold the ignition switch to the START position.
  • Measure the voltage at the CPP switch or jumper connector 0119-03 pin 1, circuit; W/P wire with anti-theft, R/LB wire without anti-theft.
  • Is voltage reading B+? 
 Yes Go to step 19.
No Go to next step.
13 CHECK FUSE 24 (7.5A)
  • Key OFF.
  • Remove and check smart junction box (SJB) fuse 21 (5A).
  • Is SJB Fuse 21 (5A) OK? 
 Yes Go to next step.
No Go to step 15.
14 CHECK THE INPUT TO SJB FUSE 21 (5A)
  • Hold the ignition switch to the START position.
  • Measure the voltage at the input cavity of SJB fuse 21 (5A).
  • Is the voltage reading B+? 
 Yes Repair W/P wire for an open. Test the system for normal operation.
No Go to step 22.
15 CHECK THE CPP INPUT FOR A SHORT TO GROUND
  • Measure the resistance between the CPP switch or jumper connector 0119-03 pin 1, circuit W/P wire and ground.
  • Is the resistance reading 10, 000 ohms or less? 
 Yes Repair W/P wire or R/LB wire for a short to ground. Test the system for normal operation.
No Go to next step.
16 CHECK CPP OUTPUT FOR A SHORT TO GROUND
  • Disconnect starter relay 48 from battery junction box (BJB).
  • Measure the resistance between the CPP switch or jumper connector 0119-03 pin 2, circuit P wire and ground.
  • Is the resistance reading 10, 000 ohms or less? 
 Yes For manual transmission, repair P wire or T/R wire for a short to ground. For automatic transmission, Go to next step.
No Replace SJB fuse 21 (5A). Test the system for normal operation. If fuse 21 opens again, check the starting system for an intermittent short to ground.
17 CHECK FOR A SHORTED DIGITAL TRANSMISSION RANGE (TR) SENSOR
  • Disconnect digital TR sensor connector 0140-05.
  • Measure the resistance between jumper connector 0119-03 pin 2, circuit P wire and ground.
  • Is the resistance greater than 10, 000 ohms or less? 
 Yes Repair P wire for short to ground. Test the system for normal operation.
No Go to next step.
18 CHECK T/R WIRE FOR A SHORT TO GROUND
  • Measure the resistance between digital TR sensor connector 0140-05 pin 10, circuit T/R wire and ground.
  • Is the resistance reading greater than 10, 000 ohms or less? 
 Yes Repair T/R wire for a short to ground. Test the system for normal operation.
No Check the digital TR sensor adjustment. If the digital TR sensor is not adjusted properly, replace the digital TR sensor.
See DIGITAL TRANSMISSION RANGE SENSOR REMOVAL / INSTALLATION .
Test the system for normal operation.
19 CHECK CPP OUTPUT FOR AN OPEN
  • Disconnect starter relay 48 from the BJB.
  • Measure the resistance between the CPP connector 0119-03 pin 2, circuit P wire and the starter relay circuit T/R.
  • Is the resistance reading 5 ohms or less? 
 Yes Replace the clutch pedal position (CPP) switch or jumper.
See CLUTCH PEDAL POSITION (CPP) SWITCH REMOVAL / INSTALLATION .
Test the system for normal operation.
No For manual transmission, repair P wire or T/R wire for an open. Test the system for normal operation. For automatic transmission, Go to next step.
20 CHECK P WIRE FOR AN OPEN
  • Disconnect digital TR sensor connector 0140-05.
  • Measure the resistance of P wire between the jumper connector 0119-03 pin 2 and the digital TR sensor connector 0140-05 pin 12, circuit P.
  • Is the resistance reading 5 ohms or less? 
 Yes Go to next step.
No Repair P wire for an open. Test the system for normal operation.
21 CHECK T/R WIRE FOR AN OPEN
  • Measure the resistance of T/R wire between the starter relay and the digital TR sensor connector 0140-05 pin 10, circuit T/R.
  • Is the resistance reading 5 ohms or less? 
 Yes Check the digital TR sensor adjustment. If the digital TR sensor is adjusted properly, replace the digital TR sensor.
See DIGITAL TRANSMISSION RANGE SENSOR REMOVAL / INSTALLATION .
Test the system for normal operation.
No Repair T/R wire for an open. Test the system for normal operation.
22 CHECK POWER TO THE IGNITION SWITCH
  • Disconnect ignition switch connector C-250.
  • Measure the voltage at the ignition switch connector C-250 pin 2, circuit Y.
  • Is the voltage reading greater than 10 volts? 
 Yes Go to next step.
No Repair Y wire for an open. Test the system for normal operation.
23 CHECK (R/LB) WIRE FOR AN OPEN
  • Measure the resistance of R/LB wire between the ignition switch connector C-250 pin 5, circuit R/LB and the input cavity of SJB fuse 21 (5A).
  • Is the resistance reading 5 ohms or less? 
 Yes Replace the ignition switch.
See IGNITION SWITCH . Test the system for normal operation.
No Repair R/LB wire for an open. Test the system for normal operation.
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