- Vehicle speed is 25 km/h (16 mph) or more
- Transfer position switch is in 4H
| Last Modified: 11-29-2007 | 1.6 C | |
| Service Category: Drivetrain | Section: Automatic Transmission/Transaxle | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM0000012UV011X |
| Title: AB60F AUTOMATIC TRANSMISSION / TRANSAXLE: AUTOMATIC TRANSMISSION SYSTEM: DESCRIPTION (2008 Sequoia) | ||
|
DTC |
P0818 |
Driveline Disconnect Switch Input Circuit |
DESCRIPTION
The ECM detects the signal indicating that the transfer is in neutral.
This DTC indicates that the signal indicating that the transfer is in neutral remains on.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
P0818 |
The signal indicating that the transfer is in neutral remains ON while vehicle is running under following conditions for 30 seconds (2 trip detection logic): |
|
MONITOR DESCRIPTION
The ECM detects whether or not the transfer is in neutral by monitoring the signal from the transfer shift actuator assembly.
If the ECM detects that the transfer is in neutral under the following conditions, the ECM will conclude that there is a malfunction of the transfer shift actuator assembly, illuminate the MIL and store the DTC:
- The transfer shift actuator assembly indicates that the transfer is in neutral.
- The transfer position switch is in the "4H" position.
- The vehicle is being driven at 25 km/h (16 mph) or more.
- The transfer neutral signal has been ON for more than 30 seconds.
MONITOR STRATEGY
|
Related DTCs |
P0818: Transfer neutral position switch/Verify switch cycling |
|
Required sensors/Components |
Transfer neutral position switch, Vehicle speed sensor |
|
Frequency of operation |
Continuous |
|
Duration |
30 seconds |
|
MIL operation |
2 driving cycles |
|
Sequence of operation |
None |
TYPICAL ENABLING CONDITIONS
|
The monitor will run whenever the following DTCs are not present |
None |
|
Vehicle speed |
25 km/h (15.54 mph) or more |
|
Transfer position |
High |
|
Battery voltage |
8 V or more |
|
Ignition switch |
ON |
|
Starter |
OFF |
TYPICAL MALFUNCTION THRESHOLDS
|
Transfer neutral switch signal |
ON |
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (TRANSFER SHIFT ACTUATOR - BODY GROUND) |
|
(a) Disconnect the D46 transfer shift actuator connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D46-3 (N) - Body ground |
Always |
10 kΩ or higher |
Result
|
Result |
Proceed to |
|---|---|
|
NG |
A |
|
OK |
B |
|
|
2. |
CHECK HARNESS AND CONNECTOR (4WD CONTROL ECU - BODY GROUND) |
(a) Disconnect the A28 4WD control ECU connector.
(b) Disconnect the D46 transfer shift actuator connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A28-16 (NP) - Body ground |
Always |
10 kΩ or higher |
Result
|
Result |
Proceed to |
|---|---|
|
NG |
A |
|
OK |
B |
|
|
3. |
CHECK HARNESS AND CONNECTOR (TRANSFER SHIFT ACTUATOR, 4WD CONTROL ECU - ECM) |
(a) Disconnect the A27 ECM connector.
(b) Disconnect the D46 transfer shift actuator connector.
(c) Disconnect the A28 4WD control ECU connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A27-5 (TFN) - Body ground |
Always |
10 kΩ or higher |
Result
|
Result |
Proceed to |
|---|---|
|
OK |
A |
|
NG |
B |
|
|
|