Nissan Rogue (T33) 2021-Present Service Manual: U10a0 Lost Communication (vcr)
DTC Description
DTC DETECTION LOGIC
| DTC |
CONSULT screen terms (Trouble diagnosis content) | DTC detection condition | ||
|---|---|---|---|---|
| U10A0 | 00 |
Lost communication (Variable compression ratio) [Lost communication (Variable compression ratio)] |
Diagnosis condition | — |
| Signal (terminal) | CAN communication signal | |||
| Threshold | ECM cannot receive a communication signal sent from the VCR control module | |||
| Diagnosis delay time | — | |||
POSSIBLE CAUSE
-
Harness and connectors (CAN communication line is open or shorted.)
-
ECM
-
VCR control module
FAIL-SAFE
Not applicable
DTC CONFIRMATION PROCEDURE
PERFORM DTC CONFIRMATION PROCEDURE
-
Turn ignition switch ON.
-
Check 1st trip DTC.
Is DTC U10A0 detected?
YES>>Refer to DTC Diagnosis Procedure.
NO-1>>To check malfunction symptom before repair: Refer to Intermittent Incident.
NO-2>>Confirmation after repair: INSPECTION END
DTC Diagnosis Procedure
CHECK VCR CONTROL MODULE POWER SUPPLY
-
Turn ignition switch OFF.
-
Disconnect VCR control module harness connector.
-
Check the voltage between VCR control module harness connector and ground.
+ − Voltage VCR control module Connector Terminal F108 5 Ground Battery voltage
Is the inspection result normal?
YES>>GO TO 3
NO>>GO TO 2
CHECK FUSE
Pull out 30A fuse (No.AA) from fuse and fusible link block.
Is the fuse blown (open)?
YES>>Replace the fuse after repairing the applicable circuit.
NO>>Perform trouble diagnosis for power supply.
CHECK CAN COMMUNICATION CIRCUIT
-
Disconnect ECM harness connector.
-
Disconnect VCR control module harness connector.
-
Check the continuity between ECM harness connector and VCR control module harness connector.
ECM VCR control module Continuity Connector Terminal Connector Terminal E21 131 F108 17 Existed 132 16 -
Check harness for short to ground.
Is the inspection result normal?
YES>>GO TO 4.
NO>>Repair or replace error-detected parts.
REPLACE VCR CONTROL MODULE
-
Replace VCR control module.
-
Perform DTC Confirmation Procedure again. Refer to DTC Description.
Is the DTC U10A0 displayed again?
YES>>Replace VCR control module.
NO>>INSPECTION END
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Steering-wheel controls (left side)
Vehicle information display
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DTC Description
DTC DETECTION LOGIC DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
P0520
00
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Diagnosis condition
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Signal (terminal)
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DTC Description
DTC DETECTION LOGIC DTC No.
CONSULT screen terms
(Trouble diagnosis content) DTC detection condition
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Diagnosis condition
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Signal (Terminal)
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