What is this code p1652
#1
10-04-2011, 01:51 AM
What is this code p1652
P1652 Powertrain Induced Chassis Pitch Output Circuit
What the heck kinda code is this? I did a quick google search when it happened and got the wrong description thought it was a IAC. But the correct GM code is this... What sensor is this?
What the heck kinda code is this? I did a quick google search when it happened and got the wrong description thought it was a IAC. But the correct GM code is this... What sensor is this?
#2
10-04-2011, 06:53 AM
Google found this on a corvette forum with the same question asked, hope this helps.
From the service manual:
Circuit Description
The powertrain control module (PCM) controls the powertrain induced chassis pitch by grounding the control circuit via an internal switch called a driver. The primary function of the driver is to supply the ground for the controlled component. The driver has a fault line which is monitored by the PCM. When the PCM commands a component ON, the voltage of the control circuit should be low, near 0 volts. When the PCM commands the control circuit to a component OFF, the voltage potential should be a high 5 volts (4.5-5.5 volts). If the fault detection circuit senses a voltage other than what the system expects, the fault line status changes causing the DTC to set.
The PCM receives an 5 volt (4.5-5.5 volts) reference signal from the electronic suspension control (ESC) module on the powertrain induced chassis pitch circuit. The PCM grounds this circuit when the vehicle accelerates rapidly or brakes hard. When the chassis pitch input circuit goes low to about 0 volts, the ESC module commands all four shock absorber solenoids to a firm position. The PCM calculates the chassis pitch information based on the engine torque and the vehicle braking force.
Conditions for Running the DTC
1. Engine speed greater than 400 RPM.
2. The system voltage is greater than 6 volts but less than 18 volts.
Conditions for Setting the DTC
1. The PCM detects that the commanded state of the driver and the actual state of the control circuit do not match.
2. The condition must exist for a minimum of 5.0 seconds.
From the service manual:
Circuit Description
The powertrain control module (PCM) controls the powertrain induced chassis pitch by grounding the control circuit via an internal switch called a driver. The primary function of the driver is to supply the ground for the controlled component. The driver has a fault line which is monitored by the PCM. When the PCM commands a component ON, the voltage of the control circuit should be low, near 0 volts. When the PCM commands the control circuit to a component OFF, the voltage potential should be a high 5 volts (4.5-5.5 volts). If the fault detection circuit senses a voltage other than what the system expects, the fault line status changes causing the DTC to set.
The PCM receives an 5 volt (4.5-5.5 volts) reference signal from the electronic suspension control (ESC) module on the powertrain induced chassis pitch circuit. The PCM grounds this circuit when the vehicle accelerates rapidly or brakes hard. When the chassis pitch input circuit goes low to about 0 volts, the ESC module commands all four shock absorber solenoids to a firm position. The PCM calculates the chassis pitch information based on the engine torque and the vehicle braking force.
Conditions for Running the DTC
1. Engine speed greater than 400 RPM.
2. The system voltage is greater than 6 volts but less than 18 volts.
Conditions for Setting the DTC
1. The PCM detects that the commanded state of the driver and the actual state of the control circuit do not match.
2. The condition must exist for a minimum of 5.0 seconds.
#3
10-04-2011, 03:08 PM
well makes sense but my car doesnt have active suspension... doesnt even have traction control. i have read that it could be a fan 2 control circuit as well... cause GM changed the codes
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