Step
| Action
| Value(s)
| Yes
| No
|
DEFINITION:
Transmission shifts out of PARK with the ignition switch in ON and brake pedal
not pressed.
|
1
| Did you review the Automatic Transmission Shift Lock Control Circuit
Description?
| --
|
Go to Step 2
| Go to
Symptoms - Automatic Transmission Shift Lock Control
|
2
|
- Disconnect the park/neutral position switch connector C1.
- Connect a test light between the park/neutral position switch
connector C1 terminal C and ground.
- Turn the ignition switch to the ON position.
Does the test light illuminate?
| --
|
Go to Step
3
|
Go to Step
8
|
3
|
- Connect a DMM between the park/neutral position switch terminal
C and terminal B.
- Place gearshift selector in the PARK position.
- Measure for continuity between terminal C and terminal B of the
park/neutral position switch.
Is continuity present across the park/neutral position switch when the
gearshift selector is placed in PARK?
| --
|
Go to Step
4
|
Go to Step 9
|
4
|
- Disconnect the brake transmission shift interlock switch connector.
- Test circuit 434 from the park/neutral position switch to the
brake transmission shift interlock switch for an open or high resistance.
Is circuit 434 continuous between these two connectors?
| --
|
Go to Step 5
|
Go to Step 10
|
5
|
- Connect a DMM between terminal A and terminal B of the brake transmission
shift interlock switch.
- DO NOT press the brake pedal.
- Measure for continuity between terminal A and terminal B of the
brake transmission shift interlock switch.
Is continuity present across the brake transmission shift interlock
switch when the brake pedal is not depressed?
| --
|
Go to Step 6
|
Go to Step
11
|
6
|
- Disconnect the brake transmission shift interlock control solenoid
connector.
- Test circuit 1135 from the brake transmission shift interlock
switch to the brake transmission shift interlock control solenoid for an open
or high resistance.
Is circuit 1135 continuous between these two connectors?
| --
|
Go to Step 18
|
Go to Step 7
|
7
| Repair the open or high resistance
in circuit 1135.
Is the repair complete?
| --
|
Go to Step
21
| --
|
8
| Inspect the BTSI BU MiniFuse® #21 for an open.
Is the fuse open?
| --
|
Go to Step 13
|
Go to Step 12
|
9
| Replace the park/neutral position switch.
Is the repair complete?
| --
|
Go to Step
21
| --
|
10
| Repair the open or high resistance in circuit 434.
Is the repair complete?
| --
|
Go to Step
21
| --
|
11
| Replace the brake transmission shift interlock switch.
Is the repair complete?
| --
|
Go to Step
21
| --
|
12
| Repair the open or high resistance in circuit 341.
Is the repair complete?
| --
|
Go to Step
21
| --
|
13
|
- Remove the BTSI BU MiniFuse® #21.
- Leave the park/neutral position switch connector C1 disconnected.
- Connect a DMM between the park/neutral position switch connector
C1 terminal C and ground.
- Test circuit 341 for a short to ground?
Is circuit 341 shorted to ground?
| --
|
Go to Step
14
|
Go to Step
15
|
14
| Repair a short to ground in circuit 341.
Is the repair complete?
| --
|
Go to Step
21
| --
|
15
|
- Disconnect the brake transmission shift interlock switch connector.
- Connect a DMM between the park/neutral position switch connector
C1 terminal B and ground.
- Test circuit 434 for a short to ground?
Is circuit 434 shorted to ground?
| --
|
Go to Step
16
|
Go to Step
17
|
16
| Repair a short to ground in circuit 434.
Is the repair complete?
| --
|
Go to Step
21
| --
|
17
| Repair a short to ground in circuit 1135.
Is the repair complete?
| --
|
Go to Step
21
| --
|
18
|
- Connect a DMM between the brake transmission shift lock control
solenoid connector terminal D and ground.
- Test circuit 150 for continuity to ground?
Is the resistance to ground less than the specified value?
| 0.5ohms
|
Go to Step 19
|
Go to Step 20
|
19
| Replace the brake transmission
shift lock control solenoid.
Is the repair complete?
| --
|
Go to Step
21
| --
|
20
| Repair the open or high resistance in circuit 150.
Is the repair complete?
| --
|
Go to Step
21
| --
|
21
| Operate the system in order to verify the repair.
Did you correct the condition?
| --
| System OK
| Go to
Symptoms - Automatic Transmission Shift Lock Control
|
