2011 INFINITI QX56 BATTERY

CCS-92
< DTC/CIRCUIT DIAGNOSIS >[ICC]
C1A05 BRAKE SW/STOP LAMP SW
NO >> Replace stop lamp switch.
11 .CHECK STOP LAMP SWITCH
POWER SUPPLY CIRCUIT
1. Turn the ignition switch ON.
2. Check voltage between stop lamp switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 12.
NO >> Repair the harnesses or connectors.
12.CHECK HARNESS BETWEEN STOP LAMP SWITCH AND ECM
1. Turn ignition switch OFF
2. Disconnect ECM, rear combination la mp and high-mounted stop lamp connectors.
3. Check for continuity between stop lamp s witch harness connector and ECM harness connector.
4. Check for continuity between stop la mp switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 13.
NO >> Repair the harnesses or connectors.
13.CHECK HARNESS BETWEEN STOP LAMP SWIT CH AND ABS ACTUATOR AND ELECTRIC UNIT
(CONTROL UNIT)
1. Disconnect ABS actuator and electric unit (control unit) connector.
2. Check for continuity between stop lamp switch harness connector and ABS actuator and electric unit
(control unit) harness connector.
3. Check for continuity between stop la mp switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 14.
NO >> Repair the harnesses or connectors.
Te r m i n a l s Voltag e
(Approx.)
(+) (-)
Sto p l am p s w it ch
Ground
Connector Terminal
E115 1
Battery voltage
3
Stop lamp switch ECM Continuity
Connector Terminal Connector Terminal
E115 2 E80 158 Existed
Stop lamp switch GroundContinuity
Connector Terminal
E115 2 Not existed
Stop lamp switch ABS actuator and electric
unit (control unit) Continuity
Connector Terminal Connector Terminal
E115 4 E36 17 Existed
Stop lamp switch GroundContinuity
Connector Terminal
E115 4 Not existed
Revision: 2010 May2011 QX56

CCS
C1A13 STOP LAMP RELAYCCS-99
< DTC/CIRCUIT DIAGNOSIS > [ICC]
C
D
E
F
G H
I
J
K L
M B
N P A
YES >> GO TO 9.
NO >> Replace ICC brake hold relay.
9.PERFORM SELF-DIAGNOSIS OF ECM
1. Connect all connectors again if the connectors are disconnected.
2. Turn ignition switch ON.
3. Perform “All DTC Reading”.
4. Check if any DTC is detected in “Self Diagnostic Result” of “ENGINE”. Refer to EC-98, "
DTC Index".
Is any DTC detected?
YES >> Repair or replace the malfunctioning part s identified by the self-diagnosis result.
NO >> Replace ADAS control unit. Refer to DAS-63, "
Removal and Installation".
10.CHECK ICC BRAKE HOLD RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Remove ICC brake hold relay.
3. Check the voltage between ICC brake hold relay harness connector and ground.
Is the inspection result normal?
YES >> GO TO 11.
NO >> Repair or replace ICC brake hold relay power supply circuit.
11 .CHECK HARNESS BETWEEN AND ICC BRAKE HOLD RELAY AND ADAS CONTROL UNIT
1. Disconnect ADAS control unit connectors.
2. Check for continuity between ICC brake hold re lay harness connector and ADAS control unit harness
connector.
3. Check for continuity between ADAS control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 12.
NO >> Repair the harnesses or connectors.
12.CHECK ADAS CONTROL UNIT STANDARD VOLTAGE
1. Connect all connectors again if the connectors are disconnected.
2. Turn ignition switch ON.
3. Perform “STOP LAMP” on “Active Test” of “ICC/ ADAS”, and then check the voltage between ADAS con-
trol unit harness connector and ground.
Te r m i n a l
Voltag e
(Approx.)
(+) (–)
ICC brake hold relay
Ground
Connector Terminal
E64 1 Battery
voltage
ICC brake hold relay ADAS control unit Continuity
Connector Terminal Connector Terminal
E64 2 B61 5 Existed
ICC brake hold relay GroundContinuity
Connector Terminal
E64 2 Not existed
Revision: 2010 May2011 QX56

CCS-100
< DTC/CIRCUIT DIAGNOSIS >[ICC]
C1A13 STOP LAMP RELAY
Is the inspection result normal?
YES >> GO TO 13.
NO >> Replace ADAS control unit. Refer to
DAS-63, "
Removal and Installation".
13.CHECK ICC BRAKE HOLD RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Check the voltage between ICC brake hold relay harness connector and ground.
Is the inspection result normal?
YES >> GO TO 14.
NO >> Repair or replace ICC brake hold relay power supply circuit.
14.CHECK HARNESS BETWEEN ICC BR AKE HOLD RELAY AND ECM
1. Disconnect ECM, rear combination lamp, and high- mounted stop lamp connectors and remove ICC brake
hold relay.
2. Check for continuity between ICC brake hold relay harness connector and ECM harness connector.
3. Check for continuity between ICC brake hold relay harness connector and ground.
Is the inspection result normal?
YES >> GO TO 15.
NO >> Repair the harnesses or connectors.
15.CHECK ICC BRAKE HOLD RELAY
1. Remove ICC brake hold relay.
2. Check ICC brake hold relay. Refer to CCS-102, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 16.
NO >> Replace ICC brake hold relay.
16.CHECK STOP LAMP SWITCH
Check that “STOP LAMP SW” operate norma lly in “DATA MONITOR” of “ABS”.
Te r m i n a l
Condition
Vo l ta g e
(Approx.)
(+) (–)
ADAS control unit
GroundActive Test
item
“STOP LAMP”
Connector Terminal
B61 5 Off
Battery
voltage
On 0 V
Te r m i n a l
Vo l ta g e
(Approx.)
(+) (–)
ICC brake hold relay
Ground
Connector Terminal
E64 3 Battery
voltage
ICC brake hold relay ECM Continuity
Connector Terminal Connector Terminal
E64 5 E80 158 Existed
ICC brake hold relay GroundContinuity
Connector Terminal
E64 5 Not existed
Revision: 2010 May2011 QX56

CCS
C1A13 STOP LAMP RELAYCCS-101
< DTC/CIRCUIT DIAGNOSIS > [ICC]
C
D
E
F
G H
I
J
K L
M B
N P A
Is the inspection result normal?
YES >> GO TO 21.
NO >> GO TO 17.
17.CHECK STOP LAMP SWITCH INSTALLATION
1. Turn ignition switch OFF.
2. Check stop lamp switch for correct installation. Refer to BR-7, "
Inspection and Adjustment".
Is the inspection result normal?
YES >> GO TO 18.
NO >> Adjust stop lamp switch installation. Refer to BR-7, "
Inspection and Adjustment".
18.CHECK STOP LAMP SWITCH
1. Disconnect stop lamp switch connector.
2. Check stop lamp switch. Refer to CCS-93, "
Component Inspection (Stop Lamp Switch)".
Is the inspection result normal?
YES >> GO TO 19.
NO >> Replace stop lamp switch.
19.CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Connect stop lamp switch connector.
2. Check the voltage between stop lamp switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 20.
NO >> Repair or replace stop lamp switch power supply circuit.
20.CHECK HARNESS BETWEEN STOP LAMP SWITCH AND ABS ACTUATOR AND ELECTRIC UNIT
(CONTROL UNIT)
1. Turn the ignition switch OFF.
2. Disconnect stop lamp switch, ABS actuator and electric unit (control unit) connectors.
3. Check for continuity between the stop lamp swit ch harness connector and the ABS actuator and electric
unit (control unit) harness connector.
4. Check for continuity between stop lamp switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 21.
NO >> Repair the harnesses or connectors.
21.PERFORM SELF-DIAGNOSIS OF ECM
1. Connect all connectors again if the connectors are disconnected.
Te r m i n a l
Voltag e
(Approx.)
(+) (–)
Stop lamp switch
Ground
Connector Terminal
E115 3 Battery
voltage
Stop lamp switch ABS actuator and electric
unit (control unit) Continuity
Connector Terminal Connector Terminal
E115 4 E36 17 Existed
Stop lamp switch GroundContinuity
Connector Terminal
E115 4 Not existed
Revision: 2010 May2011 QX56

CCS-102
< DTC/CIRCUIT DIAGNOSIS >[ICC]
C1A13 STOP LAMP RELAY
2. Turn ignition switch ON.
3. Perform “All DTC Reading”.
4. Check if any DTC is detected in “Self Diagnostic Result” of “ENGINE”. Refer to
EC-98, "
DTC Index".
Is any DTC detected?
YES >> Repair or replace the malfunctioning part s identified by the self-diagnosis result.
NO >> GO TO 22.
22.PERFORM SELF-DIAGNOSIS OF ABS ACTUAT OR AND ELECTRIC UNIT (CONTROL UNIT)
1. Connect all connectors again if the connectors are disconnected.
2. Turn ignition switch ON.
3. Perform “All DTC Reading”.
4. Check if any DTC is detected in “Self Diagnostic Result” of “ABS”. Refer to BRC-51, "
DTC Index".
Is any DTC detected?
YES >> Repair or replace the malfunctioning part s identified by the self-diagnosis result.
NO >> Replace ADAS control unit. Refer to DAS-63, "
Removal and Installation".
Component InspectionINFOID:0000000006224325
1.CHECK ICC BRAKE HOLD RELAY
Apply battery voltage to ICC brake hold relay terminals 1 and 2, and
then check for continuity under the following conditions.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace ICC brake hold relay.
Terminal Condition Continuity
35 When the battery voltage is applied Existed
When the battery voltage is not ap-
plied
Not exist-
ed
JSOIA0075GB
Revision: 2010 May2011 QX56

CCS
C1F05 ACCELERATOR PEDAL ACTUATOR POWER SUPPLY CIRCUIT
CCS-131
< DTC/CIRCUIT DIAGNOSIS > [ICC]
C
D
E
F
G H
I
J
K L
M B
N P A
C1F05 ACCELERATOR PEDAL ACTU ATOR POWER SUPPLY CIRCUIT
DTC LogicINFOID:0000000006224378
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the DCA system ON.
3. Perform “All DTC Readi ng” with CONSULT-III.
4. Check if the “C1F05” is detected as the current malfunction on the self-diagnosis results of “ICC/ADAS”.
Is
“C1F05” detected as the current malfunction?
YES >> Refer to CCS-131, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006224379
1.CHECK ADAS CONTROL UNIT SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “C1F05” in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U1000” detected?
YES >> Perform the CAN communicati on system inspection. Repair or replace the malfunctioning parts.
Refer to CCS-145, "
ADAS CONTROL UNIT : DTC Logic".
NO >> GO TO 2.
2.CHECK ACCELERATOR PEDAL ACTU ATOR SELF-DIAGNOSIS RESULTS
Check if “C1F05” is detected in “Self Diagnostic Result” of “ACCELE PEDAL ACT”.
Is
“C1F05” detected?
YES >> Refer to DAS-171, "ACCELERATOR PEDAL ACTUATOR : DTC Logic".
NO >> Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
DTC
(On board
display) Trouble diagnosis name DTC detecting condition Possible causes
C1F05 (95) APA PWR SUPLY CIR The battery voltage sent to accelerator pedal
actuator remains less than 7.9 V or more than
19.3 V for 5 seconds  Harness, connector, or fuse
 Accelerator pedal actuator
Revision: 2010 May2011 QX56

CCS-158
< DTC/CIRCUIT DIAGNOSIS >[ICC]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
ADAS CONTROL UNIT
ADAS CONTROL UNIT : Diagnosis ProcedureINFOID:0000000006228002
1.CHECK ADAS CONTROL UNIT POWER SUPPLY CIRCUIT
Check voltage between ADAS control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the ADAS control unit power supply circuit.
2.CHECK ADAS CONTROL UNIT GROUND CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect the ADAS control unit connector.
3. Check for continuity between ADAS control unit harness connector and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair the ADAS control unit ground circuit.
ICC SENSOR
ICC SENSOR : Diagnosis ProcedureINFOID:0000000006224439
1.CHECK ICC SENSOR POWER SUPPLY CIRCUIT
Check voltage between ICC sensor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the ICC sensor power supply circuit.
2.CHECK ICC SENSOR GROUND CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect the ICC sensor connector.
Te r m i n a l Condition
Voltag e
(Approx.)
(+) (–)
ADAS control unit
GroundIgnition
switch
Connector Terminal
B61 16 OFF 0 V
ON Battery volt-
age
ADAS control unit
GroundContinuity
Connector Terminal
B61 6 Existed
Te r m i n a l Condition
Voltag e
(Approx.)
(+) (–)
ICC sensor
GroundIgnition
switch
Connector Terminal
E65 1 OFF 0 V
ON Battery volt-
age
Revision: 2010 May2011 QX56

CHG
CHG-1
ELECTRICAL & POWER CONTROL
C
DE
F
G H
I
J
K L
B
SECTION CHG
A
O P
N
CONTENTS
CHARGING SYSTEM
PRECAUTION ................
...............................3
PRECAUTIONS .............................................. .....3
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
3
Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect .....................................
3
Precaution for Power Generation Voltage Variable
Control System ..........................................................
4
PREPARATION ............................................5
PREPARATION .............................................. .....5
Special Service Tools .......................................... ......5
Commercial Service Tools ........................................5
SYSTEM DESCRIPTION ..............................6
COMPONENT PARTS ................................... .....6
Component Parts Location .................................. ......6
Component Description ............................................6
SYSTEM ..............................................................7
CHARGING SYSTEM ..................................................7
CHARGING SYSTEM : System Diagram ........... ......7
CHARGING SYSTEM : System Description .............7
POWER GENERATION VOLTAGE VARIABLE
CONTROL SYSTEM .............................................. ......
7
POWER GENERATION VOLTAGE VARIABLE
CONTROL SYSTEM : System Diagram ...................
7
POWER GENERATION VOLTAGE VARIABLE
CONTROL SYSTEM : System Description ...............
7
WIRING DIAGRAM ........ ...............................9
CHARGING SYSTEM ..................................... .....9
Wiring Diagram ................................................... ......9
BASIC INSPECTION ...................................13
DIAGNOSIS AND REPAIR WORKFLOW ........13
Work Flow ............................................................ ....13
CHARGING SYSTEM PRELIMINARY IN-
SPECTION ....................................... .................
16
Inspection Procedure ........................................... ....16
POWER GENERATION VOLTAGE VARI-
ABLE CONTROL SYSTEM OPERATION IN-
SPECTION ....................................... .................
17
Inspection Procedure ........................................... ....17
DTC/CIRCUIT DIAGNOSIS .........................19
B TERMINAL CIRCUIT .....................................19
Description ........................................................... ....19
Diagnosis Procedure ...............................................19
L TERMINAL CIRCUIT (OPEN) ........................20
Description ...............................................................20
Diagnosis Procedure ...............................................20
L TERMINAL CIRCUIT (SHORT) .....................22
Description ...............................................................22
Diagnosis Procedure ...............................................22
S TERMINAL CIRCUIT .....................................23
Description ...............................................................23
Diagnosis Procedure ...............................................23
SYMPTOM DIAGNOSIS ..............................24
CHARGING SYSTEM .......................................24
Symptom Table ................................................... ....24
REMOVAL AND INSTALLATION ...............25
ALTERNATOR ................................. .................25
Exploded View ..................................................... ....25
Removal and Installation .........................................26
Inspection ................................................................28
Revision: 2010 May2011 QX56