DTC C1AA0: Front Camera Module Circuit [08/2016 - ]: Procedure

1. Check for DTCs.

   Refer to DTC CHECK / CLEAR [08/2016 - ]

   Chassis > PCS/LDA/RSA/LVN > Trouble Codes 

   Result

   Result	Proceed to
   DTC C1AA0 is not output	A
   DTC C1AA0 is output (w/ Pre-collision City Heater)	B
   DTC C1AA0 is output (w/o Pre-collision City Heater)	C

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2016 - ] 

Result: 

C 

See step  3

Result: 

B 

See step  2

1. Remove the ECU-IG NO. 4 fuse from the instrument panel junction block assembly.
2. Remove the TSS C HTR relay.
3. Measure the resistance according to the value (s) in the table below.

   Standard Resistance

   Tester Connection		Condition	Specified Condition
   ECU-IG NO. 4 fuse holder terminal 2 - TSS C HTR relay holder terminal 1	Positive (+) tester probe → ECU-IG NO. 4 fuse holder terminal 2 Negative (-) tester probe → TSS C HTR relay holder terminal 1	Always	Below 1 Ω
   	Negative (-) tester probe → ECU-IG NO. 4 fuse holder terminal 2 Positive (+) tester probe → TSS C HTR relay holder terminal 1	Always	10 kΩ or higher

4. Disconnect the N5 pre-collision city sensor connector.
5. Measure the resistance according to the value (s) in the table below.

   Standard Resistance

   Tester Connection		Condition	Specified Condition
   N5-8 (BUZ) - TSS C HTR relay holder terminal 1	Positive (+) tester probe → N5-8 (BUZ) Negative (-) tester probe → TSS C HTR relay holder terminal 1	Always	Below 1 Ω
   	Negative (-) tester probe → N5-8 (BUZ) Positive (+) tester probe → TSS C HTR relay holder terminal 1	Always	10 kΩ or higher

6. Connect the N5 pre-collision city sensor connector.
7. Install the TSS C HTR relay.
8. Install the ECU-IG NO. 4 fuse to the instrument panel junction block assembly.

Result: 

NG 

See step  4

Result: 

OK 

See step  3

1. Replace the pre-collision city sensor.

   Refer to REMOVAL [08/2016 - ]

2. Perform Pre-collision City Sensor Optical Axis Learning.

   Refer to ADJUSTMENT [08/2016 - ]

END 

1. Repair or replace the harness or connector.

NEXT 

See step  5

1. Replace the pre-collision city sensor.

   Refer to REMOVAL [08/2016 - ]

2. Perform Pre-collision City Sensor Optical Axis Learning.

   Refer to ADJUSTMENT [08/2016 - ]