Nissan Frontier. Instruction — part 200
CHG
DIAGNOSIS AND REPAIR WORKFLOW
CHG-3
< BASIC INSPECTION >
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OVERALL SEQUENCE
DETAILED FLOW
NOTE:
To ensure a complete and thorough diagnosis, the battery, stater and generator test segments must be done
as a set from start to finish.
1.
PRELIMINARY INSPECTION
Perform the preliminary inspection. Refer to
.
AWMIA1283GB
CHG-4
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORKFLOW
>> GO TO 2.
2.
STOP POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM
Stop the operation of the power generation voltage variable control in either of the following procedures.
• After selecting “ENGINE” using CONSULT, set the DUTY value of “ALTERNATOR DUTY” to 0 % by select-
ing “ALTERNATOR DUTY” of “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, and disconnect the battery current sensor connector. [However, DTC (P1550–
P1554) of the engine might remain. After finishing the inspection, connect the battery current sensor connec-
tor and erase the self diagnosis results history of the engine using CONSULT.]
>> GO TO 3.
3.
DIAGNOSIS WITH EXP-800 NI OR GR8-1200 NI
Perform the 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 Instruction for proper
testing procedures.
Test result
NO PROBLEMS>>Charging system is normal and will also show “DIODE RIPPLE” test result.
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
CHG-28, "Removal and Installation - QR25DE Models"
CHG-29, "Removal and Installation -
. Perform “DIODE RIPPLE” test again using Multitasking battery and electrical
diagnostic station GR8-1200 NI or Battery and electrical diagnostic analyzer EXP-800 NI to con-
firm repair.
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
Is the “L” terminal circuit normal?
YES
>> Replace generator. Refer to
CHG-28, "Removal and Installation - QR25DE Models"
or
"Removal and Installation - VQ40DE Models"
.
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
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
Is the “S” terminal circuit normal?
CHG
DIAGNOSIS AND REPAIR WORKFLOW
CHG-5
< BASIC INSPECTION >
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YES
>> GO TO 10.
NO
>> Repair as needed.
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
CHG-28, "Removal and Installation - QR25DE Models"
or
"Removal and Installation - VQ40DE Models"
Is generator pulley normal?
YES
>> Replace generator. Refer to
CHG-28, "Removal and Installation - QR25DE Models"
or
"Removal and Installation - VQ40DE Models"
NO
>> Repair as needed.
11.
“B” TERMINAL CIRCUIT INSPECTION
Check “B” terminal circuit. Refer to
Is “B” terminal circuit normal?
YES
>> Replace generator. Refer to
CHG-28, "Removal and Installation - QR25DE Models"
or
"Removal and Installation - VQ40DE Models"
NO
>> Repair as needed.
12.
“B” TERMINAL CIRCUIT INSPECTION
Check “B” terminal circuit. Refer to
Is “B” terminal circuit normal?
YES
>> GO TO 13.
NO
>> Repair as needed.
13.
INSPECTION OF GENERATOR PULLEY
Check generator pulley. Refer to
CHG-28, "Removal and Installation - QR25DE Models"
or
"Removal and Installation - VQ40DE Models"
Is generator pulley normal?
YES
>> Replace generator. Refer to
CHG-28, "Removal and Installation - QR25DE Models"
or
"Removal and Installation - VQ40DE Models"
NO
>> Repair as needed.
14.
“S” TERMINAL CIRCUIT INSPECTION
Check “S” terminal circuit. Refer to
Is the “S” terminal circuit normal?
YES
>> Replace generator. Refer to
CHG-28, "Removal and Installation - QR25DE Models"
or
"Removal and Installation - VQ40DE Models"
NO
>> Repair as needed.
Work Flow (Without EXP-800 NI or GR8-1200 NI)
INFOID:0000000009482308
OVERALL SEQUENCE
Before performing a generator test, make sure that the battery is fully charged. A 30-volt voltmeter and suit-
able test probes are necessary for the test.
• Before starting, inspect the fusible link.
CHG-6
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORKFLOW
• Use fully charged battery.
DETAILED FLOW
1.
PRELIMINARY INSPECTION
Perform the preliminary inspection. Refer to
>> GO TO 2.
2.
STOP POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM
Stop the operation of the power generation voltage variable control in either of the following procedures:
• After selecting “ENGINE” using CONSULT, set the DUTY value of “ALTERNATOR DUTY” to 0 % by select-
ing “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, and disconnect the battery current sensor connector. [However, DTC (P1550 -
P1554) of the engine might remain. After finishing the inspection, connect the battery current sensor connec-
tor and erase the self-diagnostic results history of the engine using CONSULT.]
>> GO TO 3.
3.
INSPECTION WITH CHARGE WARNING LAMP (IGNITION SWITCH IS TURNED ON)
When ignition switch is turned ON.
Does the charge warning lamp illuminate?
ALMIA0577GB
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