INFINITI QX56 2011 Factory Service Manual
Manufacturer: INFINITI, Model Year: 2011, Model line: QX56, Model: INFINITI QX56 2011Pages: 5598, PDF Size: 94.53 MB
Page 1101 of 5598
![INFINITI QX56 2011 Factory Service Manual
DAS-136
< DTC/CIRCUIT DIAGNOSIS >[DCA]
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 b](/img/42/57033/w960_57033-1100.png "INFINITI QX56 2011 Factory Service Manual
DAS-136
< DTC/CIRCUIT DIAGNOSIS >[DCA]
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 b")
DAS-136
< DTC/CIRCUIT DIAGNOSIS >[DCA]
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
Page 1102 of 5598
![INFINITI QX56 2011 Factory Service Manual
DAS
C1A05 BRAKE SW/STOP LAMP SWDAS-137
< DTC/CIRCUIT DIAGNOSIS > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
14.PERFORM SELF-DIAGNOSIS OF ECM
1. Connect all connectors again if the connectors are disconnect](/img/42/57033/w960_57033-1101.png "INFINITI QX56 2011 Factory Service Manual
DAS
C1A05 BRAKE SW/STOP LAMP SWDAS-137
< DTC/CIRCUIT DIAGNOSIS > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
14.PERFORM SELF-DIAGNOSIS OF ECM
1. Connect all connectors again if the connectors are disconnect")
DAS
C1A05 BRAKE SW/STOP LAMP SWDAS-137
< DTC/CIRCUIT DIAGNOSIS > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
14.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 >> GO TO 15.
15.PERFORM SELF-DIAGNOSIS OF ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
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 the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
Component Inspection (ICC Brake Switch)INFOID:0000000006228069
1.CHECK ICC BRAKE SWITCH
Check for continuity between I CC brake switch terminals.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace ICC brake switch.
Component Inspection (Stop Lamp Switch)INFOID:0000000006228070
1.CHECK STOP LAMP SWITCH
Check for continuity between stop lamp switch terminals.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace stop lamp switch.
Terminal Condition Continuity
12 When brake pedal is depressed
Not exist-
ed
When brake pedal is released Existed
Terminal Condition Continuity
12 When brake pedal is depressed Existed
When brake pedal is released
Not exist-
ed
34 When brake pedal is depressed Existed
When brake pedal is released
Not exist-
ed
Revision: 2010 May2011 QX56
Page 1103 of 5598
![INFINITI QX56 2011 Factory Service Manual
DAS-138
< DTC/CIRCUIT DIAGNOSIS >[DCA]
C1A06 OPERATION SW
C1A06 OPERATION SW
DTC LogicINFOID:0000000006228071
DTC DETECTION LOGIC
NOTE:
If DTC “C1A06” is detected along with DTC “U
1000”, fir](/img/42/57033/w960_57033-1102.png "INFINITI QX56 2011 Factory Service Manual
DAS-138
< DTC/CIRCUIT DIAGNOSIS >[DCA]
C1A06 OPERATION SW
C1A06 OPERATION SW
DTC LogicINFOID:0000000006228071
DTC DETECTION LOGIC
NOTE:
If DTC “C1A06” is detected along with DTC “U
1000”, fir")
DAS-138
< DTC/CIRCUIT DIAGNOSIS >[DCA]
C1A06 OPERATION SW
C1A06 OPERATION SW
DTC LogicINFOID:0000000006228071
DTC DETECTION LOGIC
NOTE:
If DTC “C1A06” is detected along with DTC “U
1000”, first diagnose the DTC “U1000”. Refer to DAS-182,
"ADAS CONTROL UNIT : DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Wait for approximately 10 minutes after turning the DCA system ON.
3. Perform “All DTC Reading” with CONSULT-III.
4. Check if the “C1A06” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1A06” detected as the current malfunction?
YES >> Refer to DAS-138, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228072
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected ot her than “C1A06” in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U1000” detected?
YES >> Perform the CAN communication system inspecti on. Repair or replace the malfunctioning parts.
Refer to DAS-182, "
ADAS CONTROL UNIT : DTC Logic".
NO >> GO TO 2.
2.CHECK ICC STEERING SWITCH
1. Turn the ignition switch OFF.
2. Disconnect the ICC steering switch connector.
3. Check the ICC steering switch. Refer to DAS-139, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace the steering wheel.
3.CHECK HARNESS BETWEEN SPIRAL CABLE AND ECM
1. Disconnect the ECM connector.
2. Check for continuity between the spiral cable harness connector and ECM harness connector.
3. Check for continuity between spiral cable harness connector and ground.
DTC
(On board dis-
play) Trouble diagnosis
name DTC detecting condition Possible causes
C1A06 (6) OPERATION SW
CIRC Any switch of the ICC steering switch is de-
tected as “ON” continuously for 60 seconds
An ON/OFF state judgment of the ICC differs
between ECM and ADAS control unit, and the
state continues for 2 seconds or more ICC steering switch circuit
ICC steering switch
ECM
Spiral cable ECM
Continuity
Connector Terminal Connector Terminal
M33 25
E80 128
Existed
32 130
Revision: 2010 May2011 QX56
Page 1104 of 5598
![INFINITI QX56 2011 Factory Service Manual
DAS
C1A06 OPERATION SWDAS-139
< DTC/CIRCUIT DIAGNOSIS > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair the harnesses or connectors.
4.CHECK SPIRAL C](/img/42/57033/w960_57033-1103.png "INFINITI QX56 2011 Factory Service Manual
DAS
C1A06 OPERATION SWDAS-139
< DTC/CIRCUIT DIAGNOSIS > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair the harnesses or connectors.
4.CHECK SPIRAL C")
DAS
C1A06 OPERATION SWDAS-139
< DTC/CIRCUIT DIAGNOSIS > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair the harnesses or connectors.
4.CHECK SPIRAL CABLE
Check for continuity between spiral cable terminals.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace the spiral cable.
5.PERFORM SELF-DIAGNOSIS OF ECM
1. Connect the connectors of ICC st eering switch and ECM connector.
2. Turn the ignition switch ON.
3. Perform “All DTC Reading”.
4. Check if any DTC is detected in “Self Diagnostic Result” of “ENGINE”.
Is any DTC detected?
YES >> Perform self-diagnosis on the detected DTC and re pair or replace the malfunctioning parts. Refer
to EC-98, "
DTC Index".
NO >> Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
Component InspectionINFOID:0000000006228073
1.CHECK ICC STEERING SWITCH
Check resistance between ICC steering switch terminals.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace the steering wheel.
Spiral cable
GroundContinuity
Connector Terminal
M33 25
Not existed
32
Spiral cable Continuity
Te r m i n a l
13 25 Existed
16 32
Terminal Switch operation Resistance
[Ω ]
13 16 When pressing MAIN switch Approx. 0
When pressing dynamic driver assistance
switch
Approx. 267
When pressing CANCEL switch Approx. 615
When pressing DISTANCE switch Approx.
1090
When pressing SET/COAST switch Approx.
1805
When pressing RESUME/ACCELERATE
switch Approx.
2985
When all switches are not pressed Approx.
5415
JSOIA0319GB
Revision: 2010 May2011 QX56
Page 1105 of 5598
![INFINITI QX56 2011 Factory Service Manual
DAS-140
< DTC/CIRCUIT DIAGNOSIS >[DCA]
C1A12 LASER BEAM OFF CENTER
C1A12 LASER BEAM OFF CENTER
DTC LogicINFOID:0000000006228074
DTC DETECTION LOGIC
Diagnosis ProcedureINFOID:0000000006228075
1.CHECK](/img/42/57033/w960_57033-1104.png "INFINITI QX56 2011 Factory Service Manual
DAS-140
< DTC/CIRCUIT DIAGNOSIS >[DCA]
C1A12 LASER BEAM OFF CENTER
C1A12 LASER BEAM OFF CENTER
DTC LogicINFOID:0000000006228074
DTC DETECTION LOGIC
Diagnosis ProcedureINFOID:0000000006228075
1.CHECK")
DAS-140
< DTC/CIRCUIT DIAGNOSIS >[DCA]
C1A12 LASER BEAM OFF CENTER
C1A12 LASER BEAM OFF CENTER
DTC LogicINFOID:0000000006228074
DTC DETECTION LOGIC
Diagnosis ProcedureINFOID:0000000006228075
1.CHECK ICC SENSOR SELF-DIAGNOSIS RESULTS
1. Perform “All DTC Reading” with CONSULT-III.
2. Check if the “C1A12” is detected as the current malfunction in “Self Diagnostic Result” of “LASER”.
Is
“C1A12” detected?
YES >> Refer to CCS-96, "ICC SENSOR : DTC Logic".
NO >> GO TO 2.
2.CHECK ADAS CONTROL SELF-DIAGNOSIS RESULTS
Check if the “C1A12” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1A12” detected?
YES >> Replace ADAS control unit. Refer to DAS-63, "Removal and Installation".
NO >> INSPECTION END
DTC
(On board dis-
play) Trouble diagnosis name DTC detecting condition Possible causes
C1A12 (12) LASER BEAM OFFCNTR
Laser beam of ICC sensor is off the aiming
point Laser beam is off the aiming point
Revision: 2010 May2011 QX56
Page 1106 of 5598
![INFINITI QX56 2011 Factory Service Manual
DAS
C1A13 STOP LAMP RELAYDAS-141
< DTC/CIRCUIT DIAGNOSIS > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
C1A13 STOP LAMP RELAY
DTC LogicINFOID:0000000006228076
DTC DETECTION LOGIC
NOTE:
If DTC “C1A13” is d](/img/42/57033/w960_57033-1105.png "INFINITI QX56 2011 Factory Service Manual
DAS
C1A13 STOP LAMP RELAYDAS-141
< DTC/CIRCUIT DIAGNOSIS > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
C1A13 STOP LAMP RELAY
DTC LogicINFOID:0000000006228076
DTC DETECTION LOGIC
NOTE:
If DTC “C1A13” is d")
DAS
C1A13 STOP LAMP RELAYDAS-141
< DTC/CIRCUIT DIAGNOSIS > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
C1A13 STOP LAMP RELAY
DTC LogicINFOID:0000000006228076
DTC DETECTION LOGIC
NOTE:
If DTC “C1A13” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to DAS-182,
"ADAS CONTROL UNIT : DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE (1)
1. Start the engine.
2. Perform the active test item “STOP LAMP” with CONSULT-III.
3. Perform “All DTC Reading”.
4. Check if the “C1A13” is detected as the current malfunction in the “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1A13” detected as the current malfunction?
YES >> Refer to DAS-141, "Diagnosis Procedure".
NO >> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE (2)
1. Drive at the vehicle speed of 40 km/h (25 MPH) or more for approximately 60 seconds or more without the
brake pedal depressed.
CAUTION:
Always drive safely.
NOTE:
If it is outside the above condition, repeat step 1.
2. Perform “All DTC Reading”.
3. Check if the “C1A13” is detected as the current malfunction in the “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1A13” detected as the current malfunction?
YES >> Refer to DAS-141, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228077
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “C1A13” 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 DAS-182, "
ADAS CONTROL UNIT : DTC Logic".
NO >> GO TO 2.
2.CHECK STOP LAMP SWITCH
Check that “STOP LAMP SW” operate normally in “DATA MONITOR” of “ICC/ADAS”.
DTC
(On board dis-
play) Trouble diagnosis name DTC detecting condition Possible causes
C1A13 (13) STOP LAMP RLY FIX Stop lamp inactive state continues for 0.3
seconds or more despite the outputting of
an ICC sensor ICC brake hold relay drive
signal
The stop lamp remains ON for 60 seconds or more under the following conditions:
- Driving at 40 km/h or more
- No stop lamp drive signal output from ICC
sensor
- No brake operation Stop lamp switch circuit
ICC brake switch circuit
ICC brake hold relay circuit
Stop lamp switch
ICC brake switch
ICC brake hold relay
Incorrect stop lamp switch installation
Incorrect ICC brake switch installation
ECM
ABS actuator and elec
tric unit (control
unit)
Revision: 2010 May2011 QX56
Page 1107 of 5598
![INFINITI QX56 2011 Factory Service Manual
DAS-142
< DTC/CIRCUIT DIAGNOSIS >[DCA]
C1A13 STOP LAMP RELAY
Is the inspection result normal?
YES >> GO TO 10.
NO >> GO TO 3.
3.CHECK STOP LAMP SWITCH INSTALLATION
1. Turn ignition switch OFF.
2. Che](/img/42/57033/w960_57033-1106.png "INFINITI QX56 2011 Factory Service Manual
DAS-142
< DTC/CIRCUIT DIAGNOSIS >[DCA]
C1A13 STOP LAMP RELAY
Is the inspection result normal?
YES >> GO TO 10.
NO >> GO TO 3.
3.CHECK STOP LAMP SWITCH INSTALLATION
1. Turn ignition switch OFF.
2. Che")
DAS-142
< DTC/CIRCUIT DIAGNOSIS >[DCA]
C1A13 STOP LAMP RELAY
Is the inspection result normal?
YES >> GO TO 10.
NO >> GO TO 3.
3.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 4.
NO >> Adjust stop lamp switch installation. Refer to BR-7, "
Inspection and Adjustment".
4.CHECK STOP LAMP SWITCH
1. Disconnect stop lamp switch connector.
2. Check stop lamp switch. Refer to DAS-137, "
Component Inspection (Stop Lamp Switch)".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace stop lamp switch.
5.CHECK STOP LAMP FOR ILLUMINATION
1. Turn the ignition switch OFF.
2. Check that the stop lamp is illuminated by depressing the brake pedal to turn the stop lamp ON.
3. Remove ICC brake hold relay.
Is the inspection result normal?
YES >> GO TO6.
NO >> Check the stop lamp circuit, and repair or replace the malfunctioning parts.
6.CHECK HARNESS BETWEEN STOP LAMP SWITCH AND ECM
1. Turn the ignition switch OFF.
2. Disconnect stop lamp switch, ECM, rear combination lamp, and high-mounted stop lamp connectors.
3. Check for continuity between the stop lamp s witch harness connector and the ECM harness connector.
4. Check for continuity between stop la mp switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair the harnesses or connectors.
7.CHECK ICC BRAKE HOLD RELAY CIRCUIT
1. Connect ICC brake hold relay.
2. Disconnect the stop lamp switch connector.
3. Check that the stop lamp does not illuminate when brake pedal is not depressed.
Is the inspection result normal?
YES >> GO TO 9.
NO >> GO TO 8.
8.CHECK ICC BRAKE HOLD RELAY
1. Remove ICC brake hold relay
2. Check ICC hold relay. Refer to DAS-146, "
Component Inspection".
Is the inspection result normal?
Stop lamp switch ECM Continuity
Connector Terminal Connector Terminal
E115 2 E80 158 Existed
Stop lamp switch GroundContinuity
Connector Terminal
E115 2 Not existed
Revision: 2010 May2011 QX56
Page 1108 of 5598
![INFINITI QX56 2011 Factory Service Manual
DAS
C1A13 STOP LAMP RELAYDAS-143
< DTC/CIRCUIT DIAGNOSIS > [DCA]
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 conn](/img/42/57033/w960_57033-1107.png "INFINITI QX56 2011 Factory Service Manual
DAS
C1A13 STOP LAMP RELAYDAS-143
< DTC/CIRCUIT DIAGNOSIS > [DCA]
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 conn")
DAS
C1A13 STOP LAMP RELAYDAS-143
< DTC/CIRCUIT DIAGNOSIS > [DCA]
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
Page 1109 of 5598
![INFINITI QX56 2011 Factory Service Manual
DAS-144
< DTC/CIRCUIT DIAGNOSIS >[DCA]
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](/img/42/57033/w960_57033-1108.png "INFINITI QX56 2011 Factory Service Manual
DAS-144
< DTC/CIRCUIT DIAGNOSIS >[DCA]
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")
DAS-144
< DTC/CIRCUIT DIAGNOSIS >[DCA]
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 DAS-146, "
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
Page 1110 of 5598
![INFINITI QX56 2011 Factory Service Manual
DAS
C1A13 STOP LAMP RELAYDAS-145
< DTC/CIRCUIT DIAGNOSIS > [DCA]
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](/img/42/57033/w960_57033-1109.png "INFINITI QX56 2011 Factory Service Manual
DAS
C1A13 STOP LAMP RELAYDAS-145
< DTC/CIRCUIT DIAGNOSIS > [DCA]
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")
DAS
C1A13 STOP LAMP RELAYDAS-145
< DTC/CIRCUIT DIAGNOSIS > [DCA]
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 DAS-137, "
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