- Air Conditioner is not displayed on "CAN Bus Check".
- Applies to "Air Conditioning Amplifier Communication Stop Mode" in "DTC Combination Table".
| Last Modified: 11-29-2007 | 1.6 J | |
| Service Category: Power Source/Network | Section: Networking | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000002VTI002X |
| Title: NETWORKING: CAN COMMUNICATION SYSTEM: DESCRIPTION (2008 Sequoia) | ||
|
Air Conditioning Amplifier Communication Stop Mode |
DESCRIPTION
|
Detection Item |
Symptom |
Trouble Area |
|---|---|---|
|
Air Conditioning Amplifier Communication Stop Mode |
When either condition below is met: |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.
PROCEDURE
|
1. |
DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL |
(a) Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
|
|
2. |
CHECK FOR OPEN IN CAN BUS WIRE (AIR CONDITIONING AMPLIFIER BRANCH WIRE) |
|
(a) Disconnect the H24 air conditioning amplifier connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
H24-11 (CANH) - H24-12 (CANL) |
Ignition switch off |
54 to 69 Ω |
|
|
3. |
CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - BATTERY AND BODY GROUND) |
(a) Reconnect the cable to the negative (-) battery terminal.
|
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
H24-21 (B) - Body ground |
Always |
11 to 14 V |
|
H24-1 (IG+) - Body ground |
Ignition switch ON |
|
|
|