Inspection and Verification
| 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. The anti-theft system must be functioning correctly before a logical starting system diagnosis can be carried out. Address anti-theft system concerns before continuing.
- Verify the customer concern by operating the starting system to duplicate the conditions.
- Inspect to determine if any of the following mechanical or electrical concerns apply. VISUAL INSPECTION CHART - STARTING SYSTEM Mechanical Electrical Starter motor Starter motor bolts Flexplate/flywheel Battery Open fuse Battery junction box (BJB) fuse(s): 11 (30A) MIDI (100A) Smart junction box (SJB) fuse 27 (20A) Damaged wiring harness Starter relay Anti-theft system Loose or corroded connections
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the cause is not visually evident, connect the scan tool to the data link connector (DLC).
- If the scan tool does not communicate with the VCM: check the VCM connection to the vehicle. check the scan tool connection to the VCM. refer to «MODULE COMMUNICATIONS NETWORK»(ref-357141) , No Power To The Scan Tool, to diagnose no communication with the scan tool.
- If the scan tool does not communicate with the vehicle: verify the ignition key is in the ON position. verify the scan tool operation with a known good vehicle. refer to «MODULE COMMUNICATIONS NETWORK»(ref-357141) to diagnose no response from the PCM.
- Carry out the network test. If the scan tool responds with no communication for one or more modules, refer to «MODULE COMMUNICATIONS NETWORK»(ref-357141) . If the network test passes, retrieve and record continuous memory DTCs.
- Clear the continuous DTCs and carry out the self-test diagnostics for the PCM.
- If the DTCs retrieved are related to the concern, go to «PCM DTC CHART»(ref-357162-S00226217862010030800000) or the «PASSIVE ANTI-THEFT SYSTEM (PATS) DTC CHART»(ref-357162-S36956236042010030800000) . For all other DTCs, refer to «MULTIFUNCTION ELECTRONIC MODULES»(ref-357142) .
- If no DTCs related to the concern are retrieved, go to «Symptom Chart»(ref-357162-S19504283882010030800000) .
| DTC | Description | Source | Action |
|---|---|---|---|
| P0512 | Starter Request Circuit - Circuit has Power With the Ignition in the OFF Position | PCM | CARRY OUT the Ignition Switch Component Test. Refer to appropriate COMPONENT TESTING article. If necessary, INSTALL a new ignition switch. If the ignition switch passed the component test, REPAIR circuit CDC35 (BU/WH) for a short to power. |
| P0705 | TR Sensor Circuit Failure | PCM | Refer to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F27E for the procedure. |
| P1702 | TR Sensor Circuit Failure | PCM | Refer to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F27E for the procedure. |
| P1705 | TR Sensor Circuit Failure | PCM | Refer to AUTOMATIC TRANSAXLE/TRANSMISSION - 4F27E for the procedure. |
| P0830 | Clutch Pedal Switch A Circuit | PCM | REFER to appropriate INTRODUCTION- GASOLINE MODELS article. |
| P0833 | Clutch Pedal Switch B Circuit | PCM | REFER to appropriate INTRODUCTION- GASOLINE MODELS article. |
PCM DTC CHART
| DTC | Description | Source | Action |
|---|---|---|---|
| B1213 | Anti-Theft Number of Programmed Keys is Below Minimum | PCM | REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) . |
| B1232 | Transceiver Failure | PCM | REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) . |
| B1342 | ECU is faulted | PCM | INSTALL a PCM. REFER to ELECTRONIC ENGINE CONTROLS . |
| B1600 | Passive Anti-Theft System (PATS) Key Transponder Signal is Not Received | PCM | REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) . |
| B1601 | PATS Received Incorrect Key-Code From Ignition Key Transponder | PCM | REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) . |
| B1602 | PATS Received Invalid Format of Key-Code From Ignition Key Transponder | PCM | REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) . |
| B1681 | PATS Transceiver Module Signal is Not Received | PCM | REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) . |
| B2103 | Antenna Not Connected | PCM | REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) . |
| B2431 | Transponder Programming Failed | PCM | VERIFY if the correct PATS key is being used. If the PATS key is defective, use a new key for programming. REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) . |
PASSIVE ANTI-THEFT SYSTEM (PATS) DTC CHART
Symptom Chart
| Condition | Possible Sources | Action |
|---|---|---|
| The engine does not crank | Battery Fuse(s) Starter motor Circuitry PCM Starter motor relay Ignition switch Start diode Transmission range (TR) sensor - automatic transmission only Clutch cutoff switch - manual transmission only Anti-theft system | Go to Pinpoint Test A . |
| One-touch integrated start (OTIS) does not operate correctly | Circuitry PCM | Go to Pinpoint Test B . |
| Unusual starter noise | Starter motor mounting Starter motor Incorrect starter drive engagement | Go to Pinpoint Test C . |
| The engine cranks slowly | Battery Starter motor Circuitry | CARRY OUT the Starter Motor Component Test. Refer to appropriate COMPONENT TESTING article. |
| The starter spins but the engine does not crank | Starter motor | INSPECT the flywheel/flexplate ring gear for missing teeth. CHECK the starter motor for correct mounting. If concern persists, INSTALL a new starter motor. REFER to Starter Motor . |
SYMPTOM CHART - STARTING SYSTEM
Pinpoint Test A: The Engine Does Not Crank
Refer to appropriate SYSTEM WIRING DIAGRAMS article, Starting System, for schematic and connector information.
Pinpoint Test B: One-Touch Integrated Start (OTIS) Does Not Operate Correctly
Refer to appropriate SYSTEM WIRING DIAGRAMS article, Starting System, for schematic and connector information.
Note. One-touch integrated start (OTIS) will not be available for manual transaxle vehicles until January 2008.
Pinpoint Test C: Unusual Starter Noise
This pinpoint test is intended to diagnose the following
- Starter motor mounting
- Starter motor mounting bolts
- Starter motor drive
- Flywheel or flexplate ring gear
- Starter motor
- C1 CHECK THE STARTER MOUNTING Inspect the starter motor mounting bolts for looseness. Is the starter motor mounted correctly? YES : Go to C2 . NO : INSTALL the starter motor correctly. REFER to «Starter Motor»(ref-357162-S13925550662010030800000) . TEST the system for Normal Operation
- C2 CHECK FOR ENGINE NOISE Turn the ignition switch to the OFF position. Connect a fused jumper wire from the B-terminal to the S-terminal of the starter motor. Engage the starter motor and verify that the noise is due to the starter operation. Is the noise due to the starter motor engagement? YES : Go to C3 . NO : REFER to «ENGINE SYSTEM - GENERAL INFORMATION»(ref-357133) to continue the diagnosis.
- C3 CHECK FOR UNUSUAL WEAR Remove the starter motor. Refer to «Starter Motor»(ref-357162-S13925550662010030800000) . Inspect the ring gear for damaged or worn teeth. Is the noise due to flexplate/flywheel ring gear tooth damage? YES : INSTALL a new flexplate/flywheel ring gear. EXAMINE the starter pinion teeth. If damaged, INSTALL a new starter motor. REFER to «Starter Motor»(ref-357162-S13925550662010030800000) . TEST the system for Normal Operation: NO : INSTALL a new starter motor. REFER to «Starter Motor»(ref-357162-S13925550662010030800000) . TEST the system for Normal Operation