2011 INFINITI QX56 ignition

PCS
B2616 IGNITION RELAY CIRCUITPCS-61
< DTC/CIRCUIT DIAGNOSIS > [POWER DISTRIBUTION SYSTEM]
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B2616 IGNITION RELAY CIRCUIT
DTC LogicINFOID:0000000006220209
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON under the following conditions, and wait for 1 second or more.
- Selector lever is in the P position
- Do not depress brake pedal
2. Check “Self-diagnosis result” of BCM with CONSULT-III.
Is DTC detected?
YES >> Go to PCS-61, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006220210
1.CHECK IGNITION RELAY-1 POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect ignition relay-1.
3. Check voltage between ignition relay-1 harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK IGNITION RELAY-1 POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check continuity between ignition relay-1 harness connector and BCM harness connector.
4. Check continuity between ignition relay-1 harness connector and ground.
Is the inspection result normal?
DTC No. Trouble diagnosis
name DTC detecting condition Possible cause
B2616 BCM An immediate operation of ignition relay-1 is re-
quested by BCM, but there is no response for more
than 1 second  Harness or connectors
(Ignition relay-1 circuit is open or
shorted)
BCM
 Ignition relay-1
(+)
(–) Condition Voltage (V)
(Approx.)
Ignition relay-1
Te r m i n a l
2 Ground Ignition switch OFF or ACC 0
ON 12
Ignition relay-1 BCM Continuity
Terminal Connector Terminal
2 M71 99 Existed
Ignition relay-1 GroundContinuity
Te r m i n a l
2 Not existed
Revision: 2010 May2011 QX56

PCS-62
< DTC/CIRCUIT DIAGNOSIS >[POWER DISTRIBUTION SYSTEM]
B2616 IGNITION RELAY CIRCUIT
YES >> Replace BCM. Refer to
BCS-81, "Removal and Installation".
NO >> Repair or replace harness.
3.CHECK IGNITION RELAY-1 GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between igniti on relay-1 harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair ignition relay-1 ground circuit.
4.CHECK IGNITION RELAY-1 POWER SUPPLY CIRCUIT-2
1. Turn ignition switch ON.
2. Check voltage between ignition relay-1 harness connector and ground.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Check continuity open or short between ignition relay-1 and battery.
5.CHECK IGNITION RELAY-1
Refer to PCS-62, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Replace ignition relay-1.
6.CHECK INTERMITTENT INCIDENT
Refer to GI-40, "
Intermittent Incident".
>> INSPECTION END
Component InspectionINFOID:0000000006220211
1.CHECK IGNITION RELAY-1
1. Turn ignition switch OFF.
2. Remove ignition relay-1.
3. Check the continuity between ignition relay-1 terminals.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace Ignition relay-1.
Ignition relay-1
GroundContinuity
Te r m i n a l
1 Existed
(+)
(–)Voltage (V)
(Approx.)
Ignition relay-1
Te r m i n a l 5 Ground Battery voltage
Terminals Condition Continuity
3 and 5 12 V direct current supply between terminals 1 and 2 Existed
No current supply Not existed
PBIB0098E
Revision: 2010 May2011 QX56

PCS
B2618 BCMPCS-63
< DTC/CIRCUIT DIAGNOSIS > [POWER DISTRIBUTION SYSTEM]
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B2618 BCM
DTC LogicINFOID:0000000006220212
DTC DETECTION LOGIC
NOTE:
 If DTC B2618 is displayed with DTC U1000, first per
form the trouble diagnosis for DTC U1000. Refer to
BCS-70, "
DTC Logic".
 If DTC B2618 is displayed with DTC U1010, first per form the trouble diagnosis for DTC U1010. Refer to
BCS-71, "
DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON under the following conditions, and wait for 1 second or more.
- Selector lever is in the P or N position
- Do not depress brake pedal
2. Check “Self-diagnosis result” of BCM with CONSULT-III.
Is DTC detected?
YES >> Go to PCS-63, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006220213
1.INSPECTION START
1. Turn ignition switch ON.
2. Select “Self-diagnosis resu lt” of BCM with CONSULT-III.
3. Touch “ERASE”.
4. Perform DTC Confirmation Procedure. See PCS-63, "
DTC Logic".
Is the 1st trip DTC B2618 displayed again?
YES >> Replace BCM. Refer to BCS-81, "Removal and Installation"
NO >> INSPECTION END
DTC No.Trouble diagnosis
name DTC detecting condition Possible cause
B2618 BCM An immediate operation of ignition relay (IPDM E/R) is re-
quested by BCM, but there is no response for more than
1 second BCM
Revision: 2010 May2011 QX56

PCS-64
< DTC/CIRCUIT DIAGNOSIS >[POWER DISTRIBUTION SYSTEM]
B261A PUSH-BUTTON IGNITION SWITCH
B261A PUSH-BUTTON IGNITION SWITCH
DTC LogicINFOID:0000000006220214
DTC DETECTION LOGIC
NOTE:
 If DTC B261A is displayed with DTC U1000, first
perform the trouble diagnosis for DTC U1000. Refer to
BCS-70, "
DTC Logic".
 If DTC B261A is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to
BCS-71, "
DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Press the push-button ignition switch under the fo llowing conditions, and wait for 1 second or more.
- Selector lever is in the P or N position
- Do not depress brake pedal
2. Check “Self-diagnosis result” of BCM with CONSULT-III.
Is DTC detected?
YES >> Go to PCS-64, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006220215
1.CHECK IGNITION SWITCH OUTPUT SIGNAL (PUSH-BUTTON IGNITION SWITCH)
1. Disconnect push-button ignition swit ch connector and IPDM E/R connector.
2. Check voltage between push-button ignition switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (BCM)
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector and push-button ignition switch harness connector.
3. Check continuity between push-button ignition switch harness connector and ground.
DTC No.Trouble diagnosis
name DTC detecting condition Possible cause
B261A PUSH-BTN IGN SW BCM detects a difference of signal for 1 second or
more between the following items.
 Push-button ignition switch signal
 Push-button ignition switch status signal (CAN)  Harness or connectors
(Push-button ignition switch circuit
is open or shorted.)
BCM
 IPDM E/R
(+)
(–)Voltage (V)
(Approx.)
Push-button ignition switch
Connector Terminal M101 4 Ground 12
BCM Push-button ignition switch Continuity
Connector Terminal Connector Terminal
M71 100 M101 4 Existed
Push-button ignition switch GroundContinuity
Connector Terminal
M101 4 Not existed
Revision: 2010 May2011 QX56

PCS
B261A PUSH-BUTTON IGNITION SWITCHPCS-65
< DTC/CIRCUIT DIAGNOSIS > [POWER DISTRIBUTION SYSTEM]
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Is the inspection result normal?
YES >> Replace BCM. Refer to
BCS-81, "Removal and Installation".
NO >> Repair or replace harness.
3.CHECK IGNITION SWITCH OU TPUT SIGNAL (IPDM E/R)
Check voltage between IPDM E/R harness connector and ground.
Is the inspection result normal?
YES >> Replace IPDM E/R.
NO >> GO TO 4.
4.CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (IPDM E/R)
1. Disconnect IPDM E/R connector.
2. Check continuity between IPDM E/R harness connec tor and push-button ignition switch harness connec-
tor.
3. Check continuity between push-button ignition switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace harness.
5.CHECK INTERMITTENT INCIDENT
Refer to GI-40, "
Intermittent Incident".
>> INSPECTION END
(+) (–)Voltage (V)
(Approx.)
IPDM E/R
Connector Terminal E17 66 Ground 12
IPDM E/R Push-button ignition switch Continuity
Connector Terminal Connector Terminal
E17 66 M101 4 Existed
Push-button ignition switch GroundContinuity
Connector Terminal
M101 4 Not existed
Revision: 2010 May2011 QX56

PCS-66
< DTC/CIRCUIT DIAGNOSIS >[POWER DISTRIBUTION SYSTEM]
B26F1 IGNITION RELAY
B26F1 IGNITION RELAY
DTC LogicINFOID:0000000006220216
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON under the following conditions, and wait for 2 seconds or more.
- Selector lever is in the P or N position
- Do not depress brake pedal
2. Check “Self-diagnosis result” of BCM with CONSULT-III.
Is DTC detected?
YES >> Go to PCS-66, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006220217
1.CHECK IPDM E/R SELF-DIAGNOSTIC RESULT
1. Turn ignition switch ON.
2. Erase the DTC of IPDM E/R.
3. Turn ignition switch OFF.
4. Turn ignition switch ON and check the DTC again.
Is DTC detected?
YES >> Repair or replace the malfunctioning part. Refer to PCS-22, "DTCIndex".
NO >> GO TO 2.
2.CHECK IGNITION RELAY (IPDM E/R) CONTROL SIGNAL
Check voltage between BCM harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace BCM. Refer to BCS-81, "
Removal and Installation".
3.CHECK IGNITION RELAY (IPDM E/ R) CONTROL SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM and IPDM connectors.
3. Check continuity between BCM harness connector and IPDM E/R harness connector.
Is the inspection result normal?
YES >> Replace IPDM E/R.
DTC No. Trouble diagnosis
name DTC detecting condition Possible cause
B26F1 IGN RELAY OFF BCM transmits the ignition relay control signal
(ON: 0 V) or ignition switch ON signal (ON)
(CAN), but does not receives ignition switch
ON signal (ON) (CAN) from IPDM E/R.  Harness or connectors
(Ignition relay ci rcuit is open)
BCM
 IPDM E/R
(+)
(–) Condition Voltage (V)
(Approx.)
BCM
Connector Terminal M71 98 Ground Ignition switch ON 0
BCM IPDM E/R Continuity
Connector Terminal Connector Terminal
M71 98 E17 68 Existed
Revision: 2010 May2011 QX56

PCS
B26F1 IGNITION RELAYPCS-67
< DTC/CIRCUIT DIAGNOSIS > [POWER DISTRIBUTION SYSTEM]
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NO >> Repair or replace harness.
Revision: 2010 May2011 QX56

PCS-68
< DTC/CIRCUIT DIAGNOSIS >[POWER DISTRIBUTION SYSTEM]
B26F2 IGNITION RELAY
B26F2 IGNITION RELAY
DTC LogicINFOID:0000000006220218
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON under the following conditions, and wait for 2 seconds or more.
- Selector lever is in the P or N position
- Do not depress brake pedal
2. Check “Self-diagnosis result” of BCM with CONSULT-III.
Is DTC detected?
YES >> Go to PCS-68, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006220219
1.CHECK IPDM E/R SELF-DIAGNOSTIC RESULT
1. Turn ignition switch ON.
2. Erase the DTC of IPDM E/R.
3. Turn ignition switch OFF.
4. Turn ignition switch ON and check the DTC again.
Is DTC detected?
YES >> Repair or replace the malfunctioning part. Refer to PCS-22, "DTCIndex".
NO >> GO TO 2.
2.CHECK IGNITION RELAY (IPDM E/R) CONTROL SIGNAL
1. Turn ignition switch OFF.
2. Check voltage between IPDM E/R harness connector and ground.
Is the inspection result normal?
YES >> Replace IPDM E/R.
NO >> GO TO 3.
3.CHECK IGNITION RELAY (IPDM E/R) CONTROL SIGNAL CIRCUIT - 1
1. Disconnect BCM and IPDM E/R connectors.
2. Check continuity between IP DM E/R harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
DTC No. Trouble diagnosis
name DTC detecting condition Possible cause
B26F2 IGN RELAY ON BCM transmits the ignition relay control signal
(OFF: 12 V) or ignition switch ON signal (OFF)
(CAN), but does not receives ignition switch
ON signal (OFF) (CAN) from IPDM E/R.  Harness or connectors
(Ignition relay ci rcuit is short)
BCM
 IPDM E/R
(+)
(–) Condition Voltage (V)
(Approx.)
IPDM E/R
Connector Terminal E17 68 Ground Ignition switch OFF or ACC 12
IPDM E/R GroundContinuity
Connector Terminal
E17 68 Not existed
Revision: 2010 May2011 QX56