STANDARD STARTING SYSTEM
The starting system consists of
- Starter relay
- Starter motor (including an integral starter solenoid)
Other components to be considered as part of starting system are
- Battery
- Battery cables
- Ignition switch and key lock cylinder
- Clutch pedal position switch (manual transmission)
- Park/neutral position switch (automatic transmission)
- Neutral Position Sensor (manual transmission with Stop/Start system integrated)
- Wire harnesses and connections.
The Battery, Starting, and Charging systems operate in conjunction with one another, and must be tested as a complete system. For correct operation of starting/charging systems, all components used in these 3 systems must perform within specifications. When attempting to diagnose any of these systems, it is important that you keep their interdependency in mind.
The diagnostic procedures used include the most basic conventional diagnostic methods, to the more sophisticated On-Board Diagnostics (OBD) built into the Powertrain Control Module (PCM). Use of an induction-type milliampere ammeter, volt/ohmmeter, battery charger, carbon pile rheostat (load tester), and 12-volt test lamp may be required.
When you press the Keyless Go button (KIN Button), a request is sent to RFHM via the private LIN. Once the RFHM receives the request from the KIN it then looks for the valid key via the Passive Entry Module (PEM) antennas. If the RFHM detects a valid key and if the brake is engaged, then the RFHM sets the ignition position to START/CRANK. The BCM then turns the Ignition status to START/CRANK. Then the BCM sends command to turn the vehicle to the CRANK. For an IGNM (Ignition Node Module) vehicle, when the customer turns the key to Start position the RFHM sets the ignition to START/CRANK. The brake pedal status is not required to start the IGNM vehicle but can be started with brake pedal engaged. The BCM then turns the Ignition status to START/CRANK. Then the BCM sends command to turn the vehicle to the CRANK. The functionality is the same except it is not wirelessly detected. If conditions are correct to start the ECM turn on the high side of the ECM starter relay and turns the Crank Hold Signal to True. If the BCM is still in crank and the Crank Hold is true then the BCM turns on the Low side of the BCM Starter relay and the engine will start cranking. Once the engine started the ECM deactivates the double start over ride. The BCM will then deactivate the starter either when the engine starts or the maximum time has been reach for the tip start (10 sec. for Gas and 25 sec. for diesel). The RFHM changes the ignition position to RUN if the start type is TIP start or the 5 second time expires or the engine controller indicates the vehicle is not in park or neutral The engine can be manually shut down by the driver with speeds over 5 MPH in any gear.
STARTER SOLENOID
| WARNING | Check to ensure that the transmission is in the park position with the parking brake applied. This may result in personal injury or death. |
- Verify battery condition. Battery must be in good condition with a full charge before performing any starter tests. Refer to Battery Tests. Refer to «BATTERY - DIAGNOSIS AND TESTING»(ref-646227-S31898064892014072800000) .
- Perform Starter Solenoid test BEFORE performing the starter relay test.
- Perform a visual inspection of the starter/starter solenoid for corrosion, loose connections or faulty wiring.
- Locate and remove the starter relay.
- Connect a remote starter switch or a jumper wire between the remote battery positive post and terminal 87 of the starter relay connector. If engine cranks, starter/starter solenoid is good. Go to the «RELAY TEST»(ref-646258-S37336147702014072800000) . If engine does not crank or solenoid chatters, check wiring and connectors from starter relay to starter solenoid and from the battery positive terminal to starter post for loose or corroded connections. Particularly at starter terminals. Repeat test. If engine still fails to crank properly, trouble is within starter or starter mounted solenoid, and replace starter. Inspect the ring gear teeth.
STARTER RELAY
| WARNING | Check to ensure that the transmission is in the park/neutral position with the parking brake applied. This may result in personal injury or death. |
SAFETY SWITCHES
For diagnostics of the Transmission Range Sensor, refer to the appropriate Transmission Service Information for more information.
If equipped with Clutch Interlock/Upstop Switch, refer to CLUTCH - DIAGNOSIS AND TESTING .
IGNITION SWITCH
After testing starter solenoid and relay, test ignition switch and wiring. Refer to the IGNITION SYSTEM - SERVICE INFORMATION - 1.4L or IGNITION SYSTEM - SERVICE INFORMATION - 2.0L & 2.4L and SYSTEM WIRING DIAGRAMS article for more information. Check all wiring for opens or shorts, and all connectors for being loose or corroded.
BATTERY
For battery diagnosis and testing, refer to the BATTERY SYSTEM - SERVICE INFORMATION article for procedures.
STARTER MOTOR
| Engine Application | Power Rating | Cranking Amperage Draw Test |
|---|---|---|
| 1.4L, 2.0L | 1.2 Kilowatt/1.6 Horsepower | 150 - 280 Amperes |
| * Test at operating temperature. Cold engine, tight (new) engine, or heavy oil will increase starter amperage draw. **The starter is equipped with permanent magnets. Never strike the starter case to attempt to loosen a sticking/stuck armature as permanent magnets may crack or break. | ||
1.4L
- Pivot the bottom of the engine (3) forward to position the starter above the intermediate shaft.
- Install the battery cable (2) onto the starter and install the nut. Torque the nut to 10 N.m (90 in. lbs.).
- Reconnect the starter electrical connector (1).
- Position the starter to the adapter plate.
- Install the lower starter bolt (1). Tighten the to 54 N.m (40 ft. lbs.).
- Position the lower engine mount bracket (3) to the isolator. Install the isolator to bracket bolt (4). Tighten the isolator to engine bracket nut (2) to 87 N.m (64 ft. lbs.).
- Install the cross-under pipe (2). Refer to «PIPE, EXHAUST CROSSUNDER, INSTALLATION»(ref-646259-S32847019502014072800000) .
- Lower the vehicle.
- Install the upper starter bolt (2). Tighten the bolt to 54 N.m (40 ft. lbs.).
- Reconnect the negative battery cable.
2.0L
- Pivot the bottom of the engine (3) forward to position the starter above the intermediate shaft.
- Install the battery cable (2) onto the starter and install the nut. Torque the nut to 10 N.m (90 in. lbs.).
- Reconnect the starter electrical connector (1).
- Position the starter to the adapter plate.
- Install the lower starter bolt (1). Tighten the to 54 N.m (40 ft. lbs.).
- Position the lower engine mount isolator to the engine bracket (3). Tighten the isolator the engine bracket bolt (4) to 87 N.m (64 ft. lbs.).
- Install the cross-under pipe (2). Refer to «PIPE, EXHAUST CROSSUNDER, INSTALLATION»(ref-646259-S32847019502014072800000) .
- Lower the vehicle.
- Install the upper starter bolt (1). Tighten the bolt to 54 N.m (40 ft. lbs.).
- Reconnect the negative battery cable.
Scheme 12
The Remote Start Antenna Module Assembly consists of an electrical connection to the Radio Frequency (RF Hub) - RF Hub (2), a length of coaxial cable, two mounting clips, and a control module/antenna (1).