Toyota Tundra (2015 year). Manual — part 2282
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000002VXP00UX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Manual Air Conditioning System): B1497/97; BUS
IC Communication Malfunction; 2015 MY Tundra [08/2014 - ]
DTC
B1497/97 BUS IC Communication Malfunction
DESCRIPTION
The air conditioning harness connects the air conditioning amplifier and each servo motor. The air conditioning
amplifier supplies power and sends operation instructions to each servo motor through the air conditioning
harness. Each servo motor sends the damper position information to the air conditioning amplifier.
DTC
CODE
DTC DETECTION CONDITION
TROUBLE AREA
B1497/97
Communication line error or
open
Air conditioning harness
No. 1 damper servo sub-assembly (air mix servo
motor)
No. 1 damper servo sub-assembly (air outlet servo
motor)
Air inlet servo motor
Air conditioning amplifier
Harness or connector
WIRING DIAGRAM
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Manual Air...
INSPECTION PROCEDURE
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1.
PERFORM ACTIVE TEST USING TECHSTREAM
(a) Select the Active Test, using the Techstream to generate a control command, and then check that
the servo motor operates.
Air Conditioner
TESTER DISPLAY
TEST PART
CONTROL
RANGE
DIAGNOSTIC
NOTE
Air Mix Servo Targ
No. 1 damper servo sub-assembly (air mix servo
Min.: 5, Max.:
-
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Manual Air...
A
A
TESTER DISPLAY
TEST PART
CONTROL
RANGE
DIAGNOSTIC
NOTE
Pulse (D)
motor) pulse
104
Air Outlet Servo Pulse
(D)
No. 1 damper servo sub-assembly (air outlet servo
motor) pulse
Min.: 9, Max.:
97
-
Air Inlet Damper Targ
Pulse
Air inlet damper target pulse
Min.: 7, Max.:
28
-
OK:
RESULT
PROCEED TO
B
GO TO STEP 6
2.
SYSTEM CHECK
(a) According to the test, proceed to the next step.
Result
RESULT
PROCEED TO
Only the No. 1 damper servo sub-assembly (air mix servo motor) is malfunctioning
A
Only the No. 1 damper servo sub-assembly (air outlet servo motor) is malfunctioning
B
Only the air inlet control servo motor is malfunctioning
C
B
GO TO STEP 4
C
GO TO STEP 5
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Manual Air...
3.
CHECK NO. 1 DAMPER SERVO SUB-ASSEMBLY (AIR MIX SERVO MOTOR)
(a) Replace the No. 1 damper servo sub-assembly (air mix servo motor)
.
HINT:
Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor
with a new or a known good one and check that the condition returns to normal.
(b) Check for DTC
.
Result
RESULT
PROCEED TO
DTC B1497/97 is not output
A
DTC B1497/97 is output
B
B
GO TO STEP 6
A
END (NO. 1 DAMPER SERVO SUB-ASSEMBLY [AIR
MIX SERVO MOTOR] IS DEFECTIVE)
4.
CHECK NO. 1 DAMPER SERVO SUB-ASSEMBLY (AIR OUTLET SERVO MOTOR)
(a) Replace the No. 1 damper servo sub-assembly (air outlet servo motor)
.
HINT:
Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor
with a new or a known good one and check that the condition returns to normal.
(b) Check for DTC
.
Result
RESULT
PROCEED TO
DTC B1497/97 is not output
A
DTC B1497/97 is output
B
B
GO TO STEP 6
A
END (NO. 1 DAMPER SERVO SUB-ASSEMBLY [AIR
OUTLET SERVO MOTOR] IS DEFECTIVE)
5.
CHECK AIR INLET SERVO MOTOR
(a) Replace the air inlet servo motor
.
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Manual Air...
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