Hybrid
For Hybrid starting system diagnostics, refer to the INTRODUCTION - GASOLINE MODELS .
The starting system is electronically controlled by the Passive Anti-Theft System (PATS). PATS is controlled by the instrument cluster. PATS recognizes the correct electronically coded ignition key and the instrument cluster will send a message to the PCM to provide a ground for the starter relay. The energized relay provides voltage to the starter solenoid, thereby allowing the starter motor to activate.
Component Tests
| WARNING | Always disconnect the battery ground cable at the battery before disconnecting the starter motor battery terminal lead. If a tool is shorted at the starter motor battery terminal, the tool can quickly heat enough to cause a skin burn. Failure to follow this instruction may result in serious personal injury. |
Note. Be sure to disconnect the battery ground cable before repairing the starter motor
Connect the Fluke 77-IV Digital Multimeter at the component terminal rather than at the wiring end connector. Making a connection at the wiring end connector could result in false readings because the meter will not pick up a high resistance between the wiring connector and the component.
Scheme 22
- Make sure the battery is fully charged. Carry out the battery condition test. Refer to Diagnosis and Testing in «BATTERY, MOUNTING AND CABLES»(ref-344091) .
- Connect a remote starter switch between the starter solenoid S-terminal and the battery positive (+) terminal.
- Connect the Fluke 77-IV Digital Multimeter positive lead to the battery positive (+) post. Connect the negative lead to the M-terminal.
- Engage the remote starter switch. Read and record the voltage. The voltage reading should be 0.8 volt or less.
- If the voltage reading is 0.8 volt or less, go to the «STARTER MOTOR - GROUND CIRCUIT COMPONENT TEST»(ref-344115-S26343874532009101600000) .
- If the voltage reading is greater than 0.8 volt, this is an indication of excessive resistance in the connections, the positive battery cable or in the starter solenoid. Move the Fluke 77-IV Digital Multimeter negative lead to the starter solenoid B-terminal and repeat the test. If the voltage reading at the B-terminal is lower than 0.8 volt, the concern is either in the connections at the starter solenoid or in the solenoid contacts.
- Remove the cables from solenoid B-, S- and M-terminals. Clean the cables and connections and reinstall the cables to the correct terminals. Repeat Steps 3 through 6 . If the voltage drop reading is still greater than 0.8 volt when checked at the M-terminal and less than 0.8 volt when checked at the B-terminal, the concern is in the solenoid contacts. Install a new starter motor.
- If the voltage reading taken at the solenoid B-terminal is still greater than 0.8 volt after cleaning the cables and the connections at the solenoid, the concern is either in the positive (+) battery cable connection or in the positive battery cable itself. Clean the positive (+) battery cable connection. If this does not solve the problem, install a new positive battery cable. Refer to «BATTERY, MOUNTING AND CABLES»(ref-344091) .
Starter Motor - Ground Circuit
A slow cranking condition can be caused by resistance in the ground or return portion of the cranking circuit. Check the voltage drop in the ground circuit as follows
Scheme 23
- Connect the Fluke 77-IV Digital Multimeter positive lead to the starter motor housing (the connection must be clean and free of rust or grease). Connect the negative lead to the negative (-) battery terminal.
- Engage the remote starter switch and crank the engine. Read and record the voltage reading. The reading should be 0.5 volt or less.
- If the voltage is more than 0.5 volt, clean the negative cable connections at the battery, the body ground connections and the starter ground connections. Retest.
- If the voltage is more than 0.5 volt, install a new cable. If the voltage reading is less than 0.5 volt and the engine still cranks slowly, install a new starter motor.
Scheme 24
| Item | Part Number | Description |
|---|---|---|
| 1 | W704141 | Starter motor solenoid wire nut |
| 2 | W766414 | Starter motor solenoid battery cable nut |
| 3 | 14A280 | Starter motor solenoid terminal cover |
| 4 | N802001 | Ground wire nut |
| 5 | 14452 | Ground wire (part of 14A280) |
| 6 | N801472 | Starter motor stud bolt (2 required) |
| 7 | 11000 | Starter motor |
ITEM DESCRIPTION
Scheme 25
- With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING & LIFTING»(ref-344051) .
- Disconnect the battery ground cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(ref-344091) .
- Remove the 5 bolts, the pin-type retainer (not shown) and the RH splash shield. To install, tighten to 9 Nm (80 lb-in).
- Remove the starter solenoid wire nut. To install, tighten to 5 Nm (44 lb-in).
- Remove the starter solenoid battery cable nut and disconnect the starter motor solenoid terminal cover and cables. To install, tighten to 12 Nm (106 lb-in).
- Remove the ground wire nut and position aside the ground wire. To install, tighten to 18 Nm (159 lb-in).
- Remove the 2 stud bolts and the starter motor. To install, tighten to 35 Nm (26 lb-ft).
- To install, reverse the removal procedure.
Scheme 26
| Item | Part Number | Description |
|---|---|---|
| 1 | W704141 | Starter motor solenoid wire nut |
| 2 | W706414 | Starter motor solenoid battery cable nut |
| 3 | 14488 | Starter motor solenoid wire terminal cover |
| 4 | Ground wire nut | |
| 5 | 14463 | Ground wire (part of 14A280) |
| 6 | W703246 | Starter motor stud bolts (2 required) |
| 7 | 11000 | Starter motor |
ITEM DESCRIPTION