With EXP-800 NI or GR8-1200 NI
DIAGNOSIS AND REPAIR WORK FLOW
Work Flow (With EXP-800 NI or GR8-1200 NI)
CHARGING SYSTEM DIAGNOSIS WITH EXP-800 NI OR GR8-1200 NI
To test the charging system, use the following special service tools:
- EXP-800 NI Battery and electrical diagnostic analyzer
- GR8-1200 NI Multitasking battery and electrical diagnostic station
NOTE:
Refer to the applicable Instruction Manual for proper charging system diagnosis procedures.
Revision: March 20122013 Infiniti JX
OVERALL SEQUENCE
DETAILED FLOW
1. PRELIMINARY INSPECTION
Perform the preliminary inspection. Refer to "Diagnosis Procedure" Charging System Preliminary Inspection.
- GO TO 2.
Revision: March 20122013 Infiniti JX
2. DISABLE THE POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM
Disable the power generation voltage variable control with either of the following procedures.
- After selecting "ENGINE" on the "SELECT SYSTEM" screen of CONSULT, set the "ALTERNATOR DUTY"
value to 0 % by selecting "ALTERNATOR DUTY" with "Active Test". Continue "Active Test" until the end of inspection. (When the DUTY value is 0 or 100 %, the normal power generation is performed according to the characteristic of the IC regulator of the generator.)
- Turn the ignition switch OFF, disconnect the battery current sensor connector and leave it disconnected during the course of the test.
NOTE:
Running the engine with the battery current sensor disconnected will cause DTCs (P1550-P1554) to set. After finishing the inspection, connect the battery current sensor connector and erase the self-diagnostic results history of the engine using CONSULT.
- GO TO 3.
3. DIAGNOSIS WITH EXP-800 NI OR GR8-1200 NI
Perform charging system test using Multitasking battery and electrical diagnostic station GR8-1200 NI or Battery and electrical diagnostic analyzer EXP-800 NI. Refer to the applicable Instruction Manual for proper testing procedures.
Test result
NO PROBLEMS-Charging system is normal.
NO VOLTAGE-GO TO 4.
LOW VOLTAGE-GO TO 12.
HIGH VOLTAGE-GO TO 14.
EXCESSIVE RIPPLE, OPEN PHASE, OPEN DIODE or SHORTED DIODE-Replace the generator. Refer to "Removal and Installation" Removal and Installation.
4. INSPECTION WITH CHARGE WARNING LAMP (IGNITION SWITCH IS ON)
Turn the ignition switch ON.
Does the charge warning lamp illuminate?
YES- GO TO 6.
NO- GO TO 5.
5. "L" TERMINAL CIRCUIT (OPEN) INSPECTION
Check "L" terminal circuit (open). Refer to "Diagnosis Procedure" L Terminal Circuit.
Is the "L" terminal circuit normal?
YES- Replace generator. Refer to "Removal and Installation" Removal and Installation.
NO- Repair as needed.
6. INSPECTION WITH CHARGE WARNING LAMP (IDLING)
Start the engine and run it at idle.
Does the charge warning lamp turn OFF?
YES- GO TO 9.
NO- GO TO 7.
7. "L" TERMINAL CIRCUIT (SHORT) INSPECTION
Check "L" terminal circuit (short). Refer to "Diagnosis Procedure" L Terminal Circuit.
Is the "L" terminal circuit normal?
YES- GO TO 8.
NO- Repair as needed.
8. "S" TERMINAL CIRCUIT INSPECTION
Check "S" terminal circuit. Refer to "Diagnosis Procedure" S Terminal Circuit.
Is the "S" terminal circuit normal?
YES- GO TO 10.
NO- Repair as needed.
Revision: March 20122013 Infiniti JX
9. INSPECTION WITH CHARGE WARNING LAMP (ENGINE AT 3,000 RPM)
Increase and maintain the engine speed at 3,000 rpm.
Does the charge warning lamp remain off?
YES- GO TO 11.
NO- GO TO 10.
10. INSPECTION OF GENERATOR PULLEY
Check generator pulley. Refer to "Inspection" Inspection.
Is generator pulley normal?
YES- Replace generator. Refer to "Removal and Installation" Removal and Installation.
NO- Repair as needed.
11. "B" TERMINAL CIRCUIT INSPECTION
Check "B" terminal circuit. Refer to "Diagnosis Procedure" B Terminal Circuit.
Is "B" terminal circuit normal?
YES- Replace generator. Refer to "Removal and Installation" Removal and Installation.
NO- Repair as needed.
12. "B" TERMINAL CIRCUIT INSPECTION
Check "B" terminal circuit. Refer to "Diagnosis Procedure" B Terminal Circuit.
Is "B" terminal circuit normal?
YES- GO TO 13.
NO- Repair as needed.
13. INSPECTION OF GENERATOR PULLEY
Check generator pulley. Refer to "Inspection" Inspection.
Is generator pulley normal?
YES- Replace generator. Refer to "Removal and Installation" Removal and Installation.
NO- Repair as needed.
14. "S" TERMINAL CIRCUIT INSPECTION
Check "S" terminal circuit. Refer to "Diagnosis Procedure" S Terminal Circuit.
Is the "S" terminal circuit normal?
YES- Replace generator. Refer to "Removal and Installation" Removal and Installation.
NO- Repair as needed.