Section 5. Troubleshooting
Toyota Model 7HBW23 Service Manual
Control Handle Display and Programming
Caution and Error Codes Code C14 - Arm Angle Reference Warning Reason
Control handle was not in up position at power ON or after the truck has not been used for a time.
Performance Limits
Travel is not allowed until code is cleared.
How to Clear Code
Code is cleared when tiller arm is moved to upright (Top Brake) position.
Possible Causes and Corrective Actions
Control handle stuck in down position a. Check up-stop Arm angle input stuck ON a. Check arm angle switch “A” and “B” for correct operation. Repair or replace as necessary. b. Check input to power amplifier.
Code C19 - Default parameter warning Reason
Parameter(s) out-of-range, or incompatible with software version.
Performance Limits
Truck functions are not allowed until after this code is cleared.
How to Clear Code
Parameter area is automatically corrected and then code is cleared.
Possible Causes and Corrective Actions
ETAC parameter area is bad. If the code does not clear after 10 seconds, try restarting the truck. Cycle the truck OFF then ON. If the code does not automatically clear, replace the ETAC.
Code C20 - Thumb Control Warning Reason
Thumb control was not in neutral position at power ON, or a throttle position sensor failure was detected. See “Code E160 - Error In Reversing Circuit” on page 5-15.
Performance Limits
Truck functions are not allowed until code is cleared.
How to Clear Code
Code is cleared after problem is corrected.
Possible Causes and Corrective Actions
Thumb control is stuck in drive position. ETAC is bad. Check the mechanical portions of the throttle controller. Give special attention to the magnet arm alignment with the ETAC sensors and to the non-metallic parts of the emergency reverser.
Code C28 - Master Control ON/OFF Switch Warning
5-10
Reason
Power amplifier could not be reset via the CAN-bus at power ON, or power amplifier reports Master Control ON/OFF switch is open.
Performance Limits
Truck functions are not allowed after this code has been set.
How to Clear Code
This code can only be cleared after the problem is resolved and truck is cycled OFF/ON.
00700-CL340-05, Issued: 2 May 2005
