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Home >> Isuzu >> 2007 >> i-290 LS, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - DTC P0218 To DTC P1810) >> DTC P0705 >> Test Description

Test Description

WARNING: This page is about a different variant/trim than selected.

The numbers below refer to the step numbers on the diagnostic table.

  1. 5:  By disconnecting the TR switch, the ground path of all TR switch circuits would be removed and the PCM would recognize all circuits as open. The scan tool will display HI for all range signals.
  2. 6:  This step tests TR switch wiring for an open or the lack of the signal voltage from the PCM.
  3. 7:  This step tests TR switch wiring and the PCM by providing a ground path through a fused jumper wire. When grounded, the scan tool range signal A should change to LOW.
  4. 8:  This step tests TR switch wiring and the PCM by providing a ground path through a fused jumper wire. When grounded, the scan tool range signal B should change to LOW.
  5. 9:  This step tests TR switch wiring and the PCM by providing a ground path through a fused jumper wire. When grounded, the scan tool range signal C should change to LOW.
  6. 10:  This step tests TR switch wiring and the PCM by providing a ground path through a fused jumper wire. When grounded, the scan tool range signal states should change to LOW.
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 ON the ignition, with the engine OFF.
  3. Select TR Sw. on the scan tool.
  4. With the scan tool, observe the TR Sw. display while selecting each transmission range: P, R, N, D4, D3, D2 and D1.
Does each selected transmission range match the scan tool TR Sw. display?		 - Go to Step 3  Go to Step 4 
3 Observe the instrument panel cluster (IPC) gear range display while selecting each transmission range: P, R, N, D4, D3, D2, D1.
Does each selected transmission range match the IPC display?		 - Go to Testing for Intermittent Conditions and Poor Connections Go to Step 17 
4 With the scan tool, observe the TR Sw. A/B/C/P display.
Does the scan tool TR Sw. A/B/C/P parameter indicate HI for all range signal states?		 - Go to Step 14  Go to Step 5 
5 
  1. Turn OFF the ignition.
  2. Disconnect the transmission range (TR) switch connector.
  3. Turn ON the ignition, with the engine OFF.
Does the scan tool TR Sw. A/B/C/P parameter indicate HI for all range signal states?		 - Go to Step 6  Go to Step 11 
6 
  1. Using the DMM and the J 35616  Terminal Test Kit, measure the voltage from the signal A circuit of the TR switch connector to ground.
  2. Measure the voltage from the signal B circuit of the TR switch connector to ground.
  3. Measure the voltage from the signal C circuit of the TR switch connector to ground.
  4. Measure the voltage from the signal P circuit of the TR switch connector to ground.
Does the voltage measure within the specified value at all four circuits?		 10-12 V Go to Step 7  Go to Step 12 
7  Connect a fused jumper wire from the TR switch connector, signal circuit A, to ground while monitoring the scan tool TR Sw. A/B/C/P parameter.
When signal circuit A is grounded, do any other signal circuits indicate LOW?		 - Go to Step 13  Go to Step 8 
8  Connect a fused jumper wire from the TR switch connector, signal circuit B, to ground while monitoring the scan tool TR Sw. A/B/C/P parameter.
When signal circuit B is grounded, do any other signal circuits indicate LOW?		 - Go to Step 13  Go to Step 9 
9  Connect a fused jumper wire from the TR switch connector, signal circuit C, to ground while monitoring the scan tool TR Sw. A/B/C/P parameter.
When signal circuit C is grounded, do any other signal circuits indicate LOW?		 - Go to Step 13  Go to Step 10 
10  Connect a fused jumper wire from the TR switch connector, signal circuit P, to ground while monitoring the scan tool TR Sw. A/B/C/P parameter.
When signal circuit P is grounded, do any other signal circuits indicate LOW?		 - Go to Step 13  Go to Step 14 
11 Test the signal circuits of the TR switch that did not indicate HI for a short to ground.
Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 18  Go to Step 16 
12 Test the signal circuits of the TR switch that did not indicate proper voltage for an open.
Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 18  Go to Step 16 
13 Test the affected signal circuits of the TR switch for a shorted together condition.
Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 18  Go to Step 16 
14 Test the ground circuit of the TR switch for an open.
Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 18  Go to Step 15 
15 Replace the TR switch, this switch is part of the park/neutral position switch.
Refer to Park/Neutral Backup Switch Replacement .
Did you complete the replacement?		 - Go to Step 18  -
16 Replace the powertrain control module (PCM).
Refer to Control Module References for replacement, setup and programming.
Did you complete the replacement?		 - Go to Step 18  -
17 Replace the IPC.
Refer to Control Module References for replacement, setup and programming.
Did you complete the replacement?		 - Go to Step 18  Go to Step 3 
18
  1. Turn ON the ignition, with the engine OFF.
  2. With the scan tool, observe the TR Sw. display while selecting each transmission range: P, R, N, D4, D3, D2 and D1.
Does each selected transmission range match the scan tool TR Sw. display?		 - Go to Step 19  Go to Step 3 
19 With the scan tool, observe the stored information, capture info, and DTC Info.
Does the scan tool display any DTCs that you have not diagnosed?		 - Go to Diagnostic Trouble Code (DTC) List - Vehicle System OK
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