| Table 1: | Gear Position and Range Signal Chart |
| Table 2: | DTC P0706 |
Circuit Description
The transmission range (TR) switch is located on the selector shaft and informs the transmission control module (TCM) of the current selector lever position P-R-N-D-3-2-1.
The selector lever position is transmitted to the TCM in encoded form along 4 lines. The encoding is such that malfunctions in the connecting lead are identified.
The TR switch is located on the selector shaft, which is connected to the selector lever via a pull cable. In addition, the TR switch controls the starter interlock, the reverse lights and the selector lever position indicator on the instrument panel.
Conditions for Setting the DTC
| • | TR switch stuck to closed |
| • | TR switch wiring harness shortage to ground |
| • | TR switch wiring harness shortage to power |
| • | Immediately after the above condition occurs |
Action Taken When the DTC Sets
| • | The hold lamp will blink. |
| • | The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer. |
| • | Adopt Emergency/ Substitute mode and constant 4th gear. |
Conditions for Clearing the Hold Lamp/DTC
| • | The hold lamp will turn OFF when the malfunction has not occurred after 3-ignition cycles. |
| • | A history DTC will clear after 40 consecutive warm-up cycles without a fault. |
| • | Using a scan tool can clear history DTCs. |
Diagnostic Aids
When DTC P0706 sets, the possible cause of TR switch
Gear Position | L1 | L2 | L3 | L4 |
|---|---|---|---|---|
P | 0 | 0 | 12 | 0 |
R | 0 | 0 | 0 | 12 |
N | 0 | 12 | 0 | 0 |
D | 12 | 12 | 12 | 0 |
3 | 12 | 12 | 0 | 12 |
2 | 12 | 0 | 12 | 12 |
1 | 0 | 12 | 12 | 12 |
Step | Action | Values | Yes | No |
|---|---|---|---|---|
1 | Perform the Diagnostic System Check. Is the check complete? | -- | Go to Step 2 | |
2 |
Refer to the Gear Position and Range Signal Chart. Does each selected transaxle range match scan tool and signal range chart? | -- | Go to Step 3 | Go to Diagnostic Aids |
3 | Inspect the F2 for an open. Was a problem found? | -- | Go to Step 4 | Go to Step 5 |
4 | Replace the fuse, as necessary. Is the action complete? | -- | System OK | -- |
5 | Inspect the transmission range (TR) switch. Refer to Diagnostic Aids. Was the problem found? | -- | Go to Step 6 | Go to Step 7 |
6 | Replace the TR switch. Refer to Park/Neutral Position Switch Replacement . Is the action complete? | -- | System OK | -- |
7 |
Is the resistance approximately equal to the specified value? | 0 ohms | Go to Step 9 | Go to Step 8 |
8 | Repair the malfunctioning terminals, as necessary. Is the action complete? | -- | System OK | -- |
9 |
Is the voltage within the specified value? | 11-14 V | Go to Step 10 | Go to Step 11 |
10 | Repair the malfunctioning terminals, as necessary. Is the action complete? | -- | System OK | -- |
11 | Replace the TCM. Refer to Transmission Control Module Replacement . Is the action complete? | -- | Go to Step 12 | -- |
12 |
Has the last test failed or is the current DTC displayed? | -- | Go to Step 2 | System OK |
