Pinpoint Test F: DTC B1360 — Ignition ACC/RUN Circuit Open
Normal Operation
The ignition switch ACC/RUN circuit sends 12 volts through 687 (GY/YE) (on the CJB input side fuse 15 [5A]) and circuit 295 (LB/PK) (on the CJB output side fuse 15 [5A]) to the instrument cluster. The ignition switch RUN/START circuit sends 12 volts through 16 (RD/LG) (on the CJB input side fuse 30 [5A]) and circuit 489 (PK/BK) (on the CJB output side fuse 30 [5A]) to the instrument cluster. The instrument cluster monitors the output voltage from the ignition circuit and if an open circuit is detected, DTC B1360 will be set.
Possible Causes
CJB fuses:
15 (5A).
30 (5A).
Circuit 295 (LB/PK).
Circuit 489 (PK/BK).
Circuit 687 (GY/YE).
Circuit 16 (RD/LG).
Ignition switch.
Wiring.
CJB.
Instrument cluster.
PINPOINT TEST F: DTC B1360 — IGNITION ACC/RUN CIRCUIT OPEN
Test Step Result / Action to Take
F1 CHECK CENTRAL JUNCTION BOX (CJB) FUSE 15 (5A) OR 30 (5A) FOR VOLTAGE
Key in ACCESSORY position.
Disconnect: CJB Fuse 15 (5A).
Disconnect: CJB Fuse 30 (5A).
Measure the following voltages:
measure the voltage between the CJB fuse cavity 15, input side and ground.
measure voltage between the CJB fuse cavity 30, input side and ground.
Are the voltages greater than 10 volts?
Yes
GO to F2 .
No
GO to F3 .
F2 CHECK CIRCUITS 295 (LB/PK) OR 489 (PK/BK) FOR AN OPEN
Key in OFF position.
Disconnect: Instrument Cluster C220a.
Disconnect: Instrument Cluster C220b.
Measure the following resistances:
measure the resistance between instrument cluster C220a-18, circuit 295 (LB/PK), harness side and the CJB fuse cavity 15 output side, circuit 295 (LB/PK).
measure the resistance between instrument cluster C220b-7, circuit 489 (PK/BK), harness side and the CJB fuse cavity 30 output side, circuit 489 (PK/BK).
Are the resistances less than 5 ohms?
Yes
GO to F6 .
No
REPAIR circuit 295 (LB/PK) or circuit 489 (PK/BK). TEST the system for normal operation.
F3 CHECK CIRCUITS 687 (GY/YE) OR 16 (RD/LG) FOR AN OPEN
Disconnect: Ignition Switch C250.
Measure the following resistances:
measure the resistance between ignition switch C250-6, circuit 687 (GY/YE), harness side and the CJB fuse cavity 15 input side, circuit 687 (GY/YE).
measure the resistance between ignition switch C250-1, circuit 16 (RD/LG), harness side and the CJB fuse cavity 30 input side, circuit 16 (RD/LG).
Are the resistances less than 5 ohms?
Yes
GO to F4 .
No
REPAIR circuit 687 (GY/YE) or circuit 16 (RD/LG). TEST the system for normal operation.
F4 CHECK THE IGNITION SWITCH
CARRY OUT the Ignition Switch Component Test.
Refer to Wiring Diagrams Cell 149 for schematic and connector information.
Is the ignition switch OK?
Yes
GO to F5 .
No
INSTALL a new ignition switch. REFER to Steering Column Switches in this section. TEST the system for normal operation.
F5 CHECK THE CJB
Key in OFF position.
Measure the resistance between the following CJB fuses input side and output side cavities:
measure the resistance between the CJB fuse 15 input side and output side cavities.
measure the resistance between the CJB fuse 30 input side and output side cavities.
Are the resistances less than 5 ohms?
Yes
GO to F6 .
No
INSTALL a new CJB. TEST the system for normal operation.
F6 CHECK THE IGNITION SWITCH PIDS
Connect the diagnostic tool.
Monitor the instrument cluster ignition ACC and RUN PIDs while cycling the ignition from ACC to RUN.
Do the PIDs indicate the ignition switch position correctly?
Yes
GO to F7 .
No
INSTALL a new instrument cluster. REFER to Section 413-00 . REPEAT the self-test.
F7 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION
Key in OFF position.
Disconnect all instrument cluster connectors.
Check for:
corrosion
pushed-out pins
Connect all instrument cluster connectors and make sure they are seated correctly.
Operate the system and verify the concern is still present.
Is the concern still present?
Yes
INSTALL a new instrument cluster. REFER to Section 413-00 . REPEAT the self-test.
No
The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. TEST the system for normal operation.