For 1990-2009 cars

## DTC P0705 Non-Europe or N. American Emissions

Table 1: | DTC P0705

### DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P0705 Transmission Range (TR) Switch Circuit

### Conditions for Setting the DTC

Park/Neutral (P/N) switch wiring harness shorted to ground or open

### Action Taken When the DTC Sets

No lamp control required, but diagnostic information should be stored immediately when malfunction is detected.

### Conditions for Clearing the Hold Lamp/DTC

• | A history DTC will clear after 40 consecutive warm up cycles without a fault.

• | The scan tool can clear the DTC from the transmission control module (TCM) history.

### Diagnostic Aids

An intermittent problem may be caused by a poor connection, rubbed-through wire insulation, or a wire that is broken inside the insulation.

Any circuitry that is suspected as causing the complaint should be thoroughly Inspected for the following conditions:

• | Back-out terminals

• | Improper mating

• | Broken locks

• | Improperly formed

• | Damaged terminals

• | Poor terminal-to-wire connection

### Gear Position and Range Signal Chart

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

#### DTC P0705

Step | Action | Values | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | Go to Diagnostic System Check - Vehicle
2 |

1. Install the scan tool.
2. Turn the ignition ON, with the engine OFF.
3. Record then clear the DTCs.
4. Turn the ignition OFF, with the engine OFF.
5. Apply the brakes and select each transaxle range (P, R,N,D,3,2,1), while the monitoring scan tool.
6. Refer to 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 |

1. Turn the ignition OFF.
2. Disconnect the transmission control module (TCM) wiring connector and the engine control module (ECM) wiring connector.
3. Measure the resistance between terminal A8 of the TCM wiring connector and B14 of the ECM wiring connector.
4. Measure the resistance between A16 of the TCM wiring connector and terminal B30 of the ECM wiring connector.

Is the resistance approximately equal to the specified value?

0 ohms

Go to Step 4

Go to Step 5

4 |

1. Turn the ignition ON, with the engine OFF.
2. Measure the voltage of terminal A8.
3. Measure the voltage of terminal A16.

Is the voltage within the specified value?

11-14 V

Go to Step 5

Go to Step 6

5 | Repair the wiring harness connector. Did you find and correct the condition? | -- | Go to Step 7 | --
6 | Replace the TCM. Refer to Transmission Control Module Replacement . Is the action complete? | -- | Go to Step 7 | --
7 |

1. After the repair, use a scan tool "clear info" function.
2. Road test the vehicle.
3. Review the "DTC info".

Has the last test failed or is the current DTC displayed?

--

Go to Step 2

System OK

## DTC P0705 European and N. American Emissions

Table 1: | Gear Position and Range Signal Chart
Table 2: | DTC P0705

### 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.

### DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P0705 Transmission Range (TR) Switch Circuit

### Conditions for Setting the DTC

• | TR switch stuck to closed

• | TR switch wiring harness shorted to ground

• | TR switch wiring harness shorted to power

• | Immediately after the above condition occurs

### Action Taken When the DTC Sets

• | The malfunction indicator lamp (MIL) will illuminate.

• | 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 MIL/DTC

• | The MIL 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 P0705 sets, the possible cause of TR switch

#### Gear Position and Range Signal Chart

Gear Position | L1 3010 | L2 3011 | L3 3012 | L4 3013
--- | --- | --- | --- | ---
P | OFF | OFF | ON | OFF
R | OFF | OFF | OFF | ON
N | OFF | ON | OFF | OFF
D | ON | ON | ON | OFF
3 | ON | ON | OFF | ON
2 | ON | OFF | ON | ON
1 | OFF | ON | ON | ON

#### DTC P0705

Step | Action | Values | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | Go to Diagnostic System Check - Vehicle
2 |

1. Install a scan tool.
2. Turn the ignition ON, with the engine OFF.
3. Record then clear the DTCs.
4. Turn the ignition OFF, then ON.
5. Applying the brakes and select each transaxle range (P, R,N,D,3,2,1), while monitoring scan tool Transmission Range parameter.

Does the parameter display Error in one or more of the selector lever positions?

--

Go to Step 3

Go to Diagnostic Aids

3 | Does the Transmission Range parameter display Error in all of the selector lever positions? | -- | Go to Step 4 | Go to Step 5
4 |

1. Ignition OFF, disconnect the park neutral position switch connector.
2. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 1 and ground.

Does the test lamp illuminate?

--

Go to Step 5

Go to Step 6

5 |

1. Ignition OFF, disconnect the transmission control module connectors X2 and X3.
2. Ignition ON, verify that a test lamp illuminates between the correct park neutral position switch signal circuit terminals and ground while moving the selector lever through P, R, N, D, 3, 2, 1. Refer to Gear Position and Range Signal Chart.

Does the test lamp illuminate on the signal circuit terminals at the correct selector lever positions?

--

Go to Step 9

Go to Step 7

6 | Test the ignition circuit for an open/high resistance or short to ground. Did you find and correct the condition? | -- | Go to Step 10 | Go to Step 7
7 | Test the affected park neutral position switch signal circuit for an open/high resistance or short to ground. Did you find and correct the condition? | -- | Go to Step 10 | Go to Step 8
8 | Replace the park neutral position switch. Refer to Park/Neutral Position Switch Replacement. Is the repair complete? | -- | Go to Step 10 | --
9 | Replace the TCM. Refer to Transmission Control Module Replacement. Is the repair complete? | -- | Go to Step 10 | --
10 |

1. After the repair, use a scan tool "clear info" function.
2. Road test the vehicle.
3. Review the "DTC info".

Has the last test failed or is the current DTC displayed?

--

Go to Step 2

System OK