2011 INFINITI QX56 ignition

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

DAS
C1A06 OPERATION SWDAS-139
< DTC/CIRCUIT DIAGNOSIS > [DCA]
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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

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

DAS
C1A13 STOP LAMP RELAYDAS-143
< DTC/CIRCUIT DIAGNOSIS > [DCA]
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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

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

DAS
C1A13 STOP LAMP RELAYDAS-145
< DTC/CIRCUIT DIAGNOSIS > [DCA]
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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

DAS-146
< DTC/CIRCUIT DIAGNOSIS >[DCA]
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:0000000006228078
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

DAS
C1A21 UNIT HIGH TEMPDAS-153
< DTC/CIRCUIT DIAGNOSIS > [DCA]
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C1A21 UNIT HIGH TEMP
DTC LogicINFOID:0000000006228090
DTC DETECTION LOGIC
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn the ignition switch OFF.
2. Wait for 10 minutes or more to cool the ICC sensor.
3. Start the engine.
4. Turn the DCA system ON.
5. Perform “All DTC Readi ng” with CONSULT-III.
6. Check if the “C1A21” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1A21” detected as the current malfunction?
YES >> Refer to DAS-153, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228091
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “C1A21” is detected in “S elf Diagnostic Result” of “LASER”.
Is
“C1A21” detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
CCS-111, "
ICC SENSOR : DTC Logic".
NO >> Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
DTC
(On board dis-
play) Trouble diagnosis
name DTC detecting condition Possible causes
C1A21 (21) ICC SENSOR HIGH
TEMP
ICC sensor judges high temperature abnormality
Temperature around the ICC sensor
becomes high
Revision: 2010 May2011 QX56