GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2007 🢒 Wave HB 🢒 DTC 🢒 DTC P0706

DTC P0706 Non European or N. American Emissions

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P0706 Transmission Range Switch Circuit Malfunction (Short)

Conditions for Setting the DTC
    • The transmission control module (TCM) detects more than 2 or more signals from the park/neutral position (PNP) switch circuit for 2 seconds continuously.
    • Detection continuously occurs 5 times.

Action Taken When the DTC Sets
    • The TCM will request the illumination of hold lamp and store the DTC when the TCM detects failures on 2 consecutive ignition cycles.
    • The TCM judges with the priority - D>2>L>R>N>P
    • No timing solenoid control for N-D
    • No self-learning control
    • No lockup
    • No preventative reverse gear control.

Conditions for Clearing the DTC
    • The TCM turns OFF the hold lamp when no further failures are detected on the next 3 consecutive ignition cycles.
    • The scan tool can clear the DTC from the TCM history.
    • The TCM clears the DTC from the TCM history memory after 40 consecutive ignition cycles without fault.
    • The TCM detects single "D range" signal from the PNP switch.

Cause of Failure
    • The wiring harness or connector between the PNP switch and the TCM
    • The PNP switch
    • The TCM

Step

Action

Yes

No

1

Did you perform the Diagnostic System Check - Automatic Transmission?

Go to Step 2

Go to Diagnostic System Check - Automatic Transmission

2
  1. Turn OFF the ignition.
  2. Install the scan tool.
  3. With the engine OFF, turn the ignition switch to the ON position.
  4. Select Store Freeze Frame/Failure Records from the DTC Information menu.
  5. Store Freeze Frame/Failure Records.
  6. Select Clear DTC Information from the DTC Information menu.
  7. Clear the DTC Information.
  8. Perform 2 vehicle drive cycles.

Is the hold lamp ON?

Go to Step 3

Go to Step 5

3
  1. Select Request DTC by Status from the DTC Information menu.
  2. Request DTC by Status.

Is DTC P0706 displayed?

Go to Step 4

Go to Step 5

4
  1. Turn OFF the ignition.
  2. Inspect the continuity between the vehicle harness and the park/neutral position (PNP) switch.
  3. Disconnect the transmission control module (TCM) connector, of the vehicle harness and test the continuity for each terminal according to the position of the select lever.
    4. • P: B20
    • R: B1
    • N: B8
    • D: B7
    • 2: B19
    • 1: B18

Did continuity test correctly for all circuits?

Go to Step 6

Go to Step 7

5

Repair the temporary connection failure of the connector. Refer to Wiring Harness and Connector Inspection Diagnosis .

Did you complete the repair?

System OK

--

6
  1. Inspect for damage between the vehicle wiring harness connector and the TCM.
  2. Inspect the connector. Refer to Wiring Harness and Connector Inspection Diagnosis .
  3. Inspect the connection condition between the TCM connectors.

Is the connection condition OK?

Go to Step 8

Go to Step 5

7
  1. Inspect for damage between the vehicle harness and the PNP switch.
  2. Disconnect the connector of the vehicle harness and test the continuity between the terminals. Refer to Wiring Harness and Connector Inspection Diagnosis .

Is the condition of the PNP switch OK?

Go to Step 9

Go to Step 10

8
  1. Replace the TCM. Refer to Transmission Control Module Replacement .
  2. Perform the reproducing test under user condition after confirming no DTC.

Is DTC displayed?

Go to Step 2

System OK

9
  1. Inspect for damage of the vehicle harness.
  2. Test continuity and short circuit for the vehicle harness and inspect the connection condition between connectors. Refer to Wiring Harness and Connector Inspection Diagnosis .

Is the condition OK?

System OK

Go to Step 5

10

Test the PNP switch. Refer to Park/Neutral Position Switch Inspection .

Did you complete the action?

System OK

--

DTC P0706 European or N. American Emissions

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P0706 Transmission Range Switch Circuit Malfunction (Short)

Conditions for Setting the DTC
    • The transmission control module (TCM) detects more than 2 or more signals from the park/neutral position (PNP) switch circuit for 2 seconds continuously.
    • Detection continuously occurs 5 times.

Action Taken When the DTC Sets
    • The TCM will request the illumination of hold lamp and store the DTC when the TCM detects failures on 2 consecutive ignition cycles.
    • The TCM judges with the priority - D>2>L>R>N>P
    • No timing solenoid control for N-D
    • No self-learning control
    • No lockup
    • No preventative reverse gear control.

Conditions for Clearing the DTC
    • The TCM turns OFF the hold lamp when no further failures are detected on the next 3 consecutive ignition cycles.
    • The scan tool can clear the DTC from the TCM history.
    • The TCM clears the DTC from the TCM history memory after 40 consecutive ignition cycles without fault.
    • The TCM detects single "D range" signal from the PNP switch.

Cause of Failure
    • The wiring harness or connector between the PNP switch and the TCM
    • The PNP switch
    • The TCM

Step

Action

Yes

No

1

Did you perform the Diagnostic System Check - Automatic Transmission?

Go to Step 2

Go to Diagnostic System Check - Automatic Transmission

2
  1. Turn OFF the ignition.
  2. Install the scan tool.
  3. With the engine OFF, turn the ignition switch to the ON position.
  4. Select Store Freeze Frame/Failure Records from the DTC Information menu.
  5. Store Freeze Frame/Failure Records.
  6. Select Clear DTC Information from the DTC Information menu.
  7. Clear the DTC information.
  8. Perform 2 vehicle drive cycles.

Is the malfunction indicator lamp (MIL) ON?

Go to Step 3

Go to Step 5

3
  1. Select Request DTC by Status from the DTC Information menu.
  2. Request DTC by Status.

Is DTC P0706 displayed?

Go to Step 4

Go to Step 5

4
  1. Turn OFF the ignition.
  2. Inspect the continuity between the vehicle harness and the park/neutral position (PNP) switch.
  3. Disconnect the transmission control module (TCM) connector, of the vehicle harness and test the continuity for each terminal according to the position of the select lever.
    4. • P: B20
    • R: B1
    • N: B8
    • D: B7
    • 2: B19
    • 1: B18

Did continuity test correctly for all circuits?

Go to Step 6

Go to Step 7

5

Repair the temporary connection failure of the connector. Refer to Wiring Harness and Connector Inspection Diagnosis .

Did you complete the repair?

System OK

--

6
  1. Inspect for damage between the vehicle wiring harness connector and the TCM.
  2. Inspect the connector. Refer to Wiring Harness and Connector Inspection Diagnosis .
  3. Inspect the connection condition between the TCM connectors.

Is the connection condition OK?

Go to Step 8

Go to Step 5

7
  1. Inspect for damage between the vehicle harness and the PNP switch.
  2. Disconnect the connector of the vehicle harness and test the continuity between the terminals. Refer to Wiring Harness and Connector Inspection Diagnosis .

Is the condition of the PNP switch OK?

Go to Step 9

Go to Step 10

8
  1. Replace the TCM. Refer to Transmission Control Module Replacement
  2. Perform the reproducing test under user condition after confirming no DTC.

Is DTC displayed?

Go to Step 2

System OK

9
  1. Inspect for damage of the vehicle harness.
  2. Test continuity and short circuit for the vehicle harness and inspect the connection condition between connectors. Refer to Wiring Harness and Connector Inspection Diagnosis .

Is the condition OK?

System OK

Go to Step 5

10

Test the PNP switch. Refer to Park/Neutral Position Switch Inspection .

Did you complete the action?

System OK

--