Diagnosis Procedure
Regarding Wiring Diagram information, refer to " WIRING DIAGRAM - WITH INTELLIGENT KEY SYSTEM " or " WIRING DIAGRAM - WITHOUT INTELLIGENT KEY SYSTEM ".
| CAUTION | Perform diagnosis under the condition that the engine cannot start by the following procedure. Remove fuel pump fuse. Crank or start the engine (where possible) until the fuel pressure is released. |
- CHECK "B" TERMINAL CIRCUIT Turn ignition switch OFF. Check that starter motor B" terminal connection is clean and tight. Check voltage between starter motor connector F27 and ground. Terminals Voltage (Approx.) (+) (-) Starter motor "B" terminal Terminal F27 B Ground Battery voltage Is the inspection result normal? YES: GO TO 2. NO: Check harness between battery and starter motor for open circuit.
- CHECK BATTERY CABLE CONNECTION STATUS (VOLTAGE DROP TEST) Shift selector lever to P (Park) or N (Neutral) position. Check voltage between battery positive terminal and starter motor B terminal. Terminals Condition Voltage (Approx.) ($4) (-) Starter motor "B" terminal Terminal Battery positive terminal F27 B When the ignition switch is in START position Less than 0.5V Is the inspection result normal? YES: GO TO 3. NO: Check harness between the battery and starter motor for continuity.
- CHECK GROUND CIRCUIT STATUS (VOLTAGE DROP TEST) Shift selector lever to P (Park) or N (Neutral) position. Check voltage between starter motor case and battery negative terminal. Terminals Condition Voltage (Approx.) (+) (-) Starter motor case Battery negative terminal When the ignition switch is in START position Less than 0.2V Is the inspection result normal? YES: "B" terminal circuit is OK. Further inspection is necessary. Refer to " «WORK FLOW (WITH GR8-1200 NI)»(ref-675591-S07106906792014120500000) " or " «WORK FLOW (WITHOUT GR8-1200 NI)»(ref-675591-S42264592392014120500000) ". NO: Check the starter motor case to engine mounting for high resistance.
Regarding Wiring Diagram information, refer to " WIRING DIAGRAM - WITH INTELLIGENT KEY SYSTEM " or " WIRING DIAGRAM - WITHOUT INTELLIGENT KEY SYSTEM ".
| CAUTION | Perform diagnosis under the condition that engine cannot start by the following procedure. Remove fuel pump fuse. Crank or start the engine (where possible) until the fuel pressure is released. |
- CHECK "S" CONNECTOR CIRCUIT Turn ignition switch OFF. Disconnect starter motor connector. Shift selector lever to "P" (Park) or "N" (Neutral) position. Check voltage between starter motor harness connector F28 and ground. (+) (-) Condition Voltage (Approx.) Connector Terminal F28 S Ground When the ignition switch is in START position Battery voltage Is the inspection result normal? YES: "S" circuit is OK. Further inspection is necessary. Refer to " «WORK FLOW (WITH GR8-1200 NI)»(ref-675591-S07106906792014120500000) " or " «WORK FLOW (WITHOUT GR8-1200 NI)»(ref-675591-S42264592392014120500000) ". NO: GO TO 2.
- CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect IPDM E/R connector. Check continuity between starter motor harness connector F28 and the IPDM E/R harness connector E43. Starter motor harness connector IPDM E/R harness connector Continuity Connector Terminal Connector Terminal F28 S E43 6 Yes Check continuity between starter motor connector F28 terminal S and ground. Connector Terminal - Continuity F28 S Ground No Is the inspection result normal? YES: Further inspection is necessary. Refer to " «WORK FLOW (WITH GR8-1200 NI)»(ref-675591-S07106906792014120500000) " or " «WORK FLOW (WITHOUT GR8-1200 NI)»(ref-675591-S42264592392014120500000) ". NO: Repair or replace the harness or connectors.
Symptom Table
| Symptom | Reference |
|---|
| No normal cranking | Refer to " WORK FLOW (WITH GR8-1200 NI) " or " WORK FLOW (WITHOUT GR8-1200 NI) ". |
| Starter motor does not rotate |
Scheme 1
Scheme 1: REMOVAL AND INSTALLATION
